US Patent No: 5,479,447

Number of patents in Portfolio can not be more than 2000

Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines

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Abstract

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A method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines wherein the initial optimal transmission bandwidth is identified based on initial signal-to-noise ratio (SNR) estimates of the orthogonal carriers of the multicarrier system. Maximum data throughput, or system performance margin, is achieved by assigning the total amount of information, or number of bits, to be transmitted in each multicarrier symbol to particular carriers through an initial bit allocation procedure, which is possibly subject to variable target bit error rates among the carriers. A transmit power mask, of any shape and level, is imposed upon the system by an initial energy allocation procedure that limits the maximum amount of power to be transmitted in each of the several carriers. Lastly, run-time adaptivity is achieved by monitoring the mean-squared-errors (MSE) of the orthogonal carriers, and the transmission bandwidth, as well as the bit allocation within the multicarrier symbol, is caused to change in real-time corresponding to changes in the channel characteristics in order to maintain optimal system performance.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITYPALO ALTO, CA2217

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chow, Peter S Redwood City, CA 4 1102
Cioffi, John M Cupertino, CA 84 3883

Cited Art Landscape

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* Cited By Examiner

Patent Citation Ranking

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HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (9)
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INTELLECTUAL VENTURES II LLC (34)
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6,246,695 Variable rate and variable mode transmission system 133 1998
6,266,348 Splitterless multicarrier modem 119 2000
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6,549,520 Method and apparatus for varying power levels in a multicarrier modem 48 2000
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6,778,596 Method and multi-carrier transceiver with stored application profiles for supporting multiple applications 42 2000
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HTC CORPORATION (39)
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6,408,033 Method and apparatus for superframe bit allocation 40 1998
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7,130,335 Multi-line ADSL modem 3 2000
7,287,096 Method for robust, flexible reconfiguration of transceive parameters for communication systems 4 2001
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6,370,371 Applications of universal frequency translation 110 1999
6,687,493 Method and circuit for down-converting a signal using a complementary FET structure for improved dynamic range 100 1999
6,580,902 Frequency translation using optimized switch structures 94 1999
6,560,301 Integrated frequency translation and selectivity with a variety of filter embodiments 89 1999
6,647,250 Method and system for ensuring reception of a communications signal 105 1999
6,421,534 Integrated frequency translation and selectivity 117 1999
6,266,518 Method and system for down-converting electromagnetic signals by sampling and integrating over apertures 112 1999
6,353,735 MDG method for output signal generation 101 1999
7,006,805 Aliasing communication system with multi-mode and multi-band functionality and embodiments thereof, such as the family radio service 76 2000
6,704,549 Multi-mode, multi-band communication system 101 2000
6,704,558 Image-reject down-converter and embodiments thereof, such as the family radio service 93 2000
7,110,435 Spread spectrum applications of universal frequency translation 81 2000
6,879,817 DC offset, re-radiation, and I/Q solutions using universal frequency translation technology 79 2000
6,798,351 Automated meter reader applications of universal frequency translation 81 2000
7,039,372 Method and system for frequency up-conversion with modulation embodiments 98 2000
7,515,896 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 33 2000
7,295,826 Integrated frequency translation and selectivity with gain control functionality, and applications thereof 53 2000
8,295,406 Universal platform module for a plurality of communication protocols 14 2000
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7,027,786 Carrier and clock recovery using universal frequency translation 63 2000
6,873,836 Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology 84 2000
6,694,128 Frequency synthesizer using universal frequency translation technology 90 2000
7,082,171 Phase shifting applications of universal frequency translation 65 2000
7,110,444 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations 67 2000
7,072,390 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 66 2000
7,054,296 Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation 220 2000
7,292,835 Wireless and wired cable modem applications of universal frequency translation technology 49 2001
7,379,515 Phased array antenna applications of universal frequency translation 48 2001
6,813,485 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same 109 2001
7,010,286 Apparatus, system, and method for down-converting and up-converting electromagnetic signals 76 2001
7,085,335 Method and apparatus for reducing DC offsets in a communication system 66 2001
7,010,559 Method and apparatus for a parallel correlator and applications thereof 73 2001
7,236,754 Method and system for frequency up-conversion 54 2002
7,016,663 Applications of universal frequency translation 62 2002
7,460,584 Networking methods and systems 33 2002
7,379,883 Networking methods and systems 42 2002
7,050,508 Method and system for frequency up-conversion with a variety of transmitter configurations 67 2002
7,072,427 Method and apparatus for reducing DC offsets in a communication system 85 2002
6,975,848 Method and apparatus for DC offset removal in a radio frequency communication channel 70 2002
7,272,164 Reducing DC offsets using spectral spreading 49 2002
7,190,941 Method and apparatus for reducing DC offsets in communication systems using universal frequency translation technology 52 2002
6,963,734 Differential frequency down-conversion using techniques of universal frequency translation technology 74 2002
7,224,749 Method and apparatus for reducing re-radiation using techniques of universal frequency translation technology 51 2002
6,836,650 Methods and systems for down-converting electromagnetic signals, and applications thereof 83 2002
7,076,011 Integrated frequency translation and selectivity 63 2003
7,389,100 Method and circuit for down-converting a signal 41 2003
7,321,640 Active polyphase inverter filter for quadrature signal generation 46 2003
7,454,453 Methods, systems, and computer program products for parallel correlation and applications thereof 34 2003
7,308,242 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same 45 2004
7,822,401 Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor 21 2004
7,218,899 Apparatus, system, and method for up-converting electromagnetic signals 60 2004
7,107,028 Apparatus, system, and method for up converting electromagnetic signals 59 2004
7,496,342 Down-converting electromagnetic signals, including controlled discharge of capacitors 42 2004
7,386,292 Apparatus, system, and method for down-converting and up-converting electromagnetic signals 49 2004
7,483,686 Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology 32 2004
7,773,688 Method, system, and apparatus for balanced frequency up-conversion, including circuitry to directly couple the outputs of multiple transistors 33 2004
7,194,246 Methods and systems for down-converting a signal using a complementary transistor structure 53 2004
7,653,145 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations 25 2005
7,245,886 Method and system for frequency up-conversion with modulation embodiments 52 2005
7,539,474 DC offset, re-radiation, and I/Q solutions using universal frequency translation technology 35 2005
7,433,910 Method and apparatus for the parallel correlator and applications thereof 36 2005
7,233,969 Method and apparatus for a parallel correlator and applications thereof 90 2005
7,218,907 Method and circuit for down-converting a signal 53 2005
7,697,916 Applications of universal frequency translation 23 2005
7,376,410 Methods and systems for down-converting a signal using a complementary transistor structure 41 2006
7,653,158 Gain control in a communication channel 28 2006
7,693,230 Apparatus and method of differential IQ frequency up-conversion 38 2006
7,724,845 Method and system for down-converting and electromagnetic signal, and transforms for same 25 2006
7,599,421 Spread spectrum applications of universal frequency translation 33 2006
7,529,522 Apparatus and method for communicating an input signal in polar representation 31 2006
8,160,196 Networking methods and systems 10 2006
7,546,096 Frequency up-conversion using a harmonic generation and extraction module 33 2007
7,936,022 Method and circuit for down-converting a signal 16 2008
7,554,508 Phased array antenna applications on universal frequency translation 34 2008
7,991,815 Methods, systems, and computer program products for parallel correlation and applications thereof 15 2008
7,937,059 Converting an electromagnetic signal via sub-sampling 17 2008
7,693,502 Method and system for down-converting an electromagnetic signal, transforms for same, and aperture relationships 24 2008
8,407,061 Networking methods and systems 6 2008
7,865,177 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 25 2009
7,826,817 Applications of universal frequency translation 22 2009
7,894,789 Down-conversion of an electromagnetic signal with feedback control 19 2009
8,019,291 Method and system for frequency down-conversion and frequency up-conversion 15 2009
8,233,855 Up-conversion based on gated information signal 9 2009
8,446,994 Gain control in a communication channel 7 2009
7,929,638 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 16 2010
8,036,304 Apparatus and method of differential IQ frequency up-conversion 17 2010
8,223,898 Method and system for down-converting an electromagnetic signal, and transforms for same 9 2010
8,077,797 Method, system, and apparatus for balanced frequency up-conversion of a baseband signal 18 2010
8,295,800 Apparatus and method for down-converting electromagnetic signals by controlled charging and discharging of a capacitor 8 2010
8,160,534 Applications of universal frequency translation 10 2010
8,340,618 Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships 11 2010
8,224,281 Down-conversion of an electromagnetic signal with feedback control 10 2010
8,190,116 Methods and systems for down-converting a signal using a complementary transistor structure 10 2011
8,229,023 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments 11 2011
8,190,108 Method and system for frequency up-conversion 9 2011
8,594,228 Apparatus and method of differential IQ frequency up-conversion 7 2011
 
SHEPERD VENTURES II. L.P., AS COLLATERAL AGENT (1)
7,154,942 Method and apparatus for automated correlation of digital modulation impairment 0 2006
 
Neosoft, A.G. (1)
* 6,178,217 Nonlinear digital communications system 50 1997
 
POSITRON ACCESS SOLUTIONS INC. (13)
7,469,025 Decision feedback transceiver for multichannel communication system 2 2003
* 2005/0052,988 Decision feedback transceiver for multichannel communication system 10 2003
7,415,086 Multi-channel communication system for multiple input, multiple output processing of an encoded signal 2 2003
* 2005/0053,097 Multi-channel communication system for multiple input, multiple output processing of an encoded signal 0 2003
7,315,592 Common mode noise cancellation 43 2004
* 2005/0053,229 Common mode noise cancellation 22 2004
7,471,732 Method and apparatus for training using variable transmit signal power levels 3 2004
* 2006/0029,148 Method and apparatus for training using variable transmit signal power levels 17 2004
* 2006/0092,050 Trellis constellation shaping 0 2005
* 2007/0223,165 Line powering in a multi-line environment 4 2006
* 2008/0089,433 Method and apparatus for adapting to dynamic channel conditions in a multi-channel communication system 25 2006
8,326,906 Efficient multiple input multiple output signal processing method and apparatus 1 2008
* 2008/0198,909 Efficient multiple input multiple output signal processing method and apparatus 14 2008
 
ROCKWELL INTERNATIONAL CORPORATION (1)
* 6,101,216 Splitterless digital subscriber line communication system 61 1997
 
BANK OF AMERICA, N.A. (2)
* 2009/0238,305 METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION 2 2008
* 2010/0202,775 METHOD, APPARATUS AND SYSTEM FOR HIGH-SPEED TRANSMISSION ON FIBER OPTIC CHANNEL 1 2009
 
INTELLECTUAL VENTURES II LLC (16)
6,798,735 Adaptive allocation for variable bandwidth multicarrier communication 16 1999
6,424,636 Variable rate and variable mode transmission system 58 2000
7,272,171 Variable state length initialization 2 2003
* 2005/0058,213 Bit allocation among carriers in multicarrier communications 1 2004
* 2006/0251,123 Multicarrier communication with variable overhead rate 1 2006
* 2006/0209,894 Adaptive Allocation For Variable Bandwidth Multicarrier Communication 29 2006
* 2007/0133,705 METHOD FOR SYNCHRONIZING SEAMLESS RATE ADAPTATION 2 2007
* 2008/0037,666 METHOD FOR SEAMLESSLY CHANGING POWER MODES IN AN ADSL SYSTEM 4 2007
* 2007/0263,706 VARIABLE STATE LENGTH INITIALIZATION 2 2007
* 2008/0159,366 METHOD AND A MULTI-CARRIER TRANSCEIVER SUPPORTING DYNAMIC SWITCHING BETWEEN ACTIVE APPLICATION SETS 2 2008
* 2008/0212,660 METHOD AND MULTI-CARRIER TRANSCEIVER WITH STORED APPLICATION PROFILES FOR SUPPORTING MULTIPLE APPLICATIONS 2 2008
* 2009/0323,788 SPLITTERLESS MULTICARRIER MODEM 3 2009
* 2010/0195,755 BIT ALOCATION AMONG CARRIERS IN MULTICARRIER COMMUNICATIONS 0 2010
* 2011/0019,751 ADAPTIVE ALLOCATION FOR VARIABLE BANDWIDTH MULTICARRIER COMMUNICATION 1 2010
* 2011/0032,975 VARIABLE STATE LENGTH INITIALIZATION 0 2010
* 2012/0093,172 METHOD FOR SYNCHRONIZING SEAMLESS RATE ADAPTATION 1 2011
 
SHEPERD VENTURES II. L.P., AS COLLATERAL AGENT (1)
* 2006/0146,924 Method and apparatus for automated correlation of digital modulation impairment 1 2006
 
Starguide Digital Network, Inc. (1)
7,194,757 Method and apparatus for push and pull distribution of multimedia 60 1999
 
AMATI COMMUNICATIONS CORPORATION (3)
* 5,673,290 ADSL compatible discrete multi-tone apparatus 150 1995
* 6,064,692 Protocol for transceiver initialization 100 1997
6,249,543 Protocol for transceiver initialization 47 1999
 
STARGUIDE DIGITAL NETWORKS (2)
7,792,068 Satellite receiver/router, system, and method of use 1 2003
7,372,824 Satellite receiver/router, system, and method of use 1 2003
 
E-CELL TECHNOLOGIES (1)
* 6,477,595 Scalable DSL access multiplexer with high reliability 111 2000
 
SILICON INTEGRATED SYSTEMS CORP. (2)
6,914,942 Method and apparatus for selecting an optimal swapping technique in discrete multi-tone system 0 2001
* 2002/0163,973 Method and apparatus for selecting an optimal swapping technique in discrete multi-tone system 1 2001
 
HYBRID AUDIO, LLC. (3)
* 6,252,909 Multi-carrier transmission system utilizing channels of different bandwidth 22 1997
* RE40281 Signal processing utilizing a tree-structured array 6 2004
* RE42949 Stereophonic audio signal decompression switching to monaural audio signal 1 2007
 
NATIONAL CENTRAL UNIVERSITY (1)
* 2011/0249,709 DHT-Based OFDM Transmitter and Receiver 12 2010
 
EXCALIBUR IP, LLC (3)
6,404,522 Optical communication method and system using wavelength division multiplexing 27 1998
6,574,018 Network control system for optical communication networks 28 1999
6,738,581 Network control system for optical communication networks 9 2003
 
NYTELL SOFTWARE LLC (2)
* 7,003,044 Method for allocating bits and power in multi-carrier communication system 31 2001
* 2001/0031,014 Method for allocating bits and power in multi-carrier communication system 10 2001
 
CIENA CORPORATION (2)
* 6,459,832 Method and apparatus for optical signal transmission using multiple sub-signals of non-uniform bandwidth 3 2000
* 2002/0027,900 System and method for programmable spectrum management 3 2001
 
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) (4)
* 6,005,893 Reduced complexity bit allocation to subchannels in a multi-carrier, high speed data transmission system 87 1997
* 6,690,736 Bit allocation in a transmission system 8 2000
7,466,658 Receiver and method for decoding of truncated data 5 2003
* 2006/0103,587 Receiver and method for decoding of truncated data 0 2003
 
COMCAST CABLE COMMUNICATIONS, LLC (7)
* 6,181,714 Multi-carrier transmission systems 68 1999
RE45807 Apparatus for transmitting a signal including transmit data to a multiple-input capable node 0 2014
RE45775 Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks 0 2014
9,106,286 Network communication using diversity 0 2014
9,209,871 Network communication using diversity 0 2014
9,197,297 Network communication using diversity 0 2014
9,344,233 Originator and recipient based transmissions in wireless communications 0 2015
 
SILICON LABORATORIES INC. (2)
6,400,759 Device driver for rate adaptable modem with forward compatible and expandable functionality 17 1997
* 6,088,385 Flexible and scalable rate ADSL transceiver and system 25 1998
 
RPX CLEARINGHOUSE LLC (5)
* 6,130,918 Method and apparatus for reducing the peak-to-average ratio in a multicarrier communication system 59 1997
* 6,236,726 Transmit power scaling for far-end crosstalk reduction 16 1998
6,466,586 Digital subscriber line framing structure supporting imbedded rate adaptive synchronous and asynchronous traffic 37 1998
* 6,693,957 Adaptive front end for discrete multitone modem 7 1998
6,885,696 Notifying bit allocation changes in a multicarrier modulation communications system 11 2000
 
SISVEL INTERNATIONAL S.A. (24)
6,735,245 Activation of multiple XDSL modems with channel probe 41 1998
6,873,652 Activation of multiple xDSL modems with implicit channel probe 6 1999
6,950,459 Activation of multiple xDSL modems with half duplex and full duplex procedures 3 1999
6,751,254 Activation of multiple xDSL modems with power control measurement 20 2000
6,694,470 Retransmission procedure and apparatus for handshaking protocol 26 2000
6,934,326 Activation of multiple xDSL modems with implicit channel probe 2 2002
6,768,772 Activation of multiple xDSL modems with implicit channel probe 6 2002
6,987,802 Activation of multiple XDSL modems with implicit channel probe 1 2002
6,765,957 Activation of multiple xDSL modems with implicit channel probe 9 2002
6,999,506 Activation of multiple xDSL modems with half duplex and full duplex procedures 2 2003
* 2004/0027,998 Activation of multiple xDSL modems with half duplex and full duplex procedures 2 2003
7,012,954 Activation of multiple xDSL modems with implicit channel probe 0 2003
6,952,442 Activation of multiple xDSL modems with implicit channel probe 0 2003
* 2004/0052,308 Activation of multiple xDSL modems with implicit channel probe 0 2003
6,901,547 Retransmission procedure and apparatus for handshaking protocol 1 2003
* 2004/0068,686 Retransmission procedure and apparatus for handshaking protocol 2 2003
7,058,123 Activation of multiple xDSL modems with half duplex and full duplex procedures 1 2003
* 2004/0131,111 Activation of multiple xDSL modems with half duplex and full duplex procedures 1 2003
6,917,647 Activation of multiple xDSL modems with power control measurement 0 2004
* 2004/0184,520 Activation of multiple xDSL modems with power control measurement 1 2004
7,508,867 Activation of multiple xDSL modems with implicit channel probe 1 2004
* 2004/0179,552 Activation of multiple xDSL modems with implicit channel probe 7 2004
7,272,173 Activation of multiple xDSL modems with implicit channel probe 0 2005
* 2005/0129,103 Activation of multiple xDSL modems with implicit channel probe 0 2005
 
QWEST COMMUNICATIONS INTERNATIONAL INC. (1)
* 7,016,822 Method and system for modeling near end crosstalk in a binder group 7 2001
 
VIASAT, INC. (4)
* 7,215,650 Adaptive data rate control for narrowcast networks 8 2000
7,916,680 Adaptive data rate control for narrowcast networks 7 2007
8,208,864 Adaptive data rate control for narrowcast networks 0 2011
8,311,491 Adaptive data rate control for narrowcast networks 0 2012
 
GENBAND US LLC (20)
6,512,764 Method and apparatus for providing voice signals to and from a telecommunications switch 28 1999
7,099,310 Method and apparatus for providing voice signals to and from a telecommunications switch 3 2000
6,512,762 System and method for communicating telecommunication information between customer premises equipment and network equipment 17 2000
6,466,573 System and method for communicating telecommunication information between a telecommunication switch and customer premises equipment 18 2000
6,404,763 System and method for communicating telecommunication information between network equipment and a plurality of local loop circuits 25 2000
7,675,900 System and method for interfacing between signaling protocols 6 2000
6,839,342 System and method for interfacing signaling information and voice traffic 14 2000
7,385,963 System and method for communicating telecommunication information from a telecommunication network to a broadband network 6 2000
7,184,427 System and method for communicating telecommunication information from a broadband network to a telecommunication network 7 2000
6,754,221 System and method for selecting a compression algorithm according to an available bandwidth 98 2001
7,149,182 System and method for providing lifeline telecommunication service 51 2001
6,526,046 System and method for communicating telecommunication information using asynchronous transfer mode 17 2001
6,996,134 System and method for reliably communicating telecommunication information 56 2001
7,245,583 System and method for providing lifeline telecommunication service to line-powered customer premises equipment 3 2001
7,170,854 System and method using switch fabric to support redundant network ports 8 2001
6,879,667 System and method for interfacing telephony voice signals with a broadband access network 17 2002
7,239,628 Line-powered network interface device 56 2002
7,738,449 Method and apparatus for providing voice signals to and from a telecommunications switch 1 2006
8,861,534 System and method for providing lifeline telecommunication service 0 2006
7,990,984 System and method for communicating telecommunication information between a broadband network and a telecommunication network 2 2007
 
Adaptive Spectrum and Signal Alignment, Inc. (25)
* 7,302,379 DSL system estimation and parameter recommendation 23 2004
* 2005/0123,027 DSL system estimation and parameter recommendation 48 2004
7,558,315 Adaptive margin and band control in digital subscriber line (DSL) systems 5 2004
* 2005/0123,028 Adaptive margin and band control 46 2004
7,809,116 DSL system estimation including known DSL line scanning and bad splice detection capability 12 2005
* 2006/0098,725 DSL system estimation including known DSL line scanning and bad splice detection capability 33 2005
* 7,593,458 FEXT determination system 9 2005
* 2005/0259,725 FEXT determination system 19 2005
8,073,135 Binder identification 4 2006
* 2007/0036,340 Binder identification 6 2006
7,852,952 DSL system loading and ordering 2 2006
7,688,884 Vectored DSL nesting 2 2006
* 2006/0280,238 Vectored DSL nesting 12 2006
7,924,736 DSL system estimation 5 2006
7,830,955 Adaptive margin and band control 0 2006
* 2008/0205,501 Dsl System Estimation 22 2006
8,483,369 DSL system 1 2007
* 2009/0207,985 DSL System 33 2007
7,711,530 DSL system estimation and parameter recommendation 9 2007
* 2008/0071,516 DSL SYSTEM ESTIMATION AND PARAMETER RECOMMENDATION 15 2007
8,031,761 Adaptive margin and band control 1 2010
* 2011/0051,906 ADAPTIVE MARGIN AND BAND CONTROL 4 2010
9,071,534 DSL system estimation 0 2011
8,761,348 DSL system training 1 2011
9,203,724 DSL system 0 2011
 
TTI INVENTIONS B LLC (1)
* 6,091,713 Method and system for estimating the ability of a subscriber loop to support broadband services 127 1998
 
PANASONIC CORPORATION (4)
* 7,760,810 Receiver and method for digital multi carrier transmission 3 2004
* 2005/0008,086 Receiver and method for digital multi carrier transmission 15 2004
* 8,724,708 Image decoding device, image decoding system, image decoding method, and integrated circuit 2 2008
* 2010/0128,801 IMAGE DECODING DEVICE, IMAGE DECODING SYSTEM, IMAGE DECODING METHOD, AND INTEGRATED CIRCUIT 2 2008
 
DORON HANDELMAN (2)
7,181,139 Optical switching apparatus and methods 12 2001
* 2002/0048,067 Optical switching apparatus and methods 5 2001
 
BELL CANADA (1)
6,456,657 Frequency division multiplexed transmission of sub-band signals 24 1999
 
RATEZE REMOTE MGMT. L.L.C. (5)
* 6,049,551 Method and apparatus for dynamic allocation of transmission bandwidth resources and for transmission of multiple audio signals with a video signal 64 1996
* 6,212,201 Method and apparatus for dynamic allocation of transmission bandwidth resources and for transmission of multiple audio signals with a video signal 29 1999
8,284,774 Ethernet digital storage (EDS) card and satellite transmission system 1 2007
7,650,620 Method and apparatus for push and pull distribution of multimedia 22 2007
8,774,082 Ethernet digital storage (EDS) card and satellite transmission system 0 2012
 
EMBARQ HOLDINGS COMPANY, LLC (40)
8,289,965 System and method for establishing a communications session with an end-user based on the state of a network connection 44 2006
8,194,643 System and method for monitoring the connection of an end-user to a remote network 48 2006
8,189,468 System and method for regulating messages between networks 47 2006
8,717,911 System and method for collecting network performance information 3 2007
8,576,722 System and method for modifying connectivity fault management packets 17 2007
8,549,405 System and method for displaying a graphical representation of a network to identify nodes and node segments on the network that are not operating normally 25 2007
8,488,447 System and method for adjusting code speed in a transmission path during call set-up due to reduced transmission performance 26 2007
8,477,614 System and method for routing calls if potential call paths are impaired or congested 28 2007
8,274,905 System and method for displaying a graph representative of network performance over a time period 46 2007
8,238,253 System and method for monitoring interlayer devices and optimizing network performance 45 2007
8,228,791 System and method for routing communications between packet networks based on intercarrier agreements 48 2007
8,224,255 System and method for managing radio frequency windows 41 2007
* 8,223,654 Application-specific integrated circuit for monitoring and optimizing interlayer network performance 43 2007
8,199,653 System and method for communicating network performance information over a packet network 45 2007
8,194,555 System and method for using distributed network performance information tables to manage network communications 44 2007
8,184,549 System and method for selecting network egress 42 2007
8,144,586 System and method for controlling network bandwidth with a connection admission control engine 3 2007
8,144,587 System and method for load balancing network resources using a connection admission control engine 52 2007
8,130,793 System and method for enabling reciprocal billing for different types of communications over a packet network 129 2007
8,125,897 System and method for monitoring and optimizing network performance with user datagram protocol network performance information packets 54 2007
8,107,366 System and method for using centralized network performance tables to manage network communications 49 2007
8,102,770 System and method for monitoring and optimizing network performance with vector performance tables and engines 49 2007
8,098,579 System and method for adjusting the window size of a TCP packet through remote network elements 143 2007
8,064,391 System and method for monitoring and optimizing network performance to a wireless device 48 2007
8,040,811 System and method for collecting and managing network performance information 56 2007
8,015,294 Pin-hole firewall for communicating data packets on a packet network 64 2007
8,000,318 System and method for call routing based on transmission performance of a packet network 163 2007
7,948,909 System and method for resetting counters counting network performance information at network communications devices on a packet network 73 2007
7,940,735 System and method for selecting an access point 91 2007
7,843,831 System and method for routing data on a packet network 81 2007
7,808,918 System and method for dynamically shaping network traffic 88 2007
7,765,294 System and method for managing subscriber usage of a communications network 102 2007
7,684,332 System and method for adjusting the window size of a TCP packet through network elements 93 2007
* 2008/0049,615 System and method for dynamically shaping network traffic 62 2007
7,889,660 System and method for synchronizing counters on an asynchronous packet communications network 66 2007
8,068,425 System and method for using network performance information to determine improved measures of path states 49 2009
8,358,580 System and method for adjusting the window size of a TCP packet through network elements 42 2009
8,111,692 System and method for modifying network traffic 43 2010
8,213,366 System and method for monitoring and optimizing network performance to a wireless device 1 2011
8,670,313 System and method for adjusting the window size of a TCP packet through network elements 1 2012
 
AT&T INTELLECTUAL PROPERTY I, L.P. (6)
* 9,225,464 Method and system for controlling an interleaver 0 2007
* 2007/0162,789 Method and system for controlling an interleaver 3 2007
7,995,545 Wireless broadband service 0 2007
* 7,716,557 Method and system for adaptive interleaving 0 2008
* 7,716,558 Method and system for adaptive interleaving 0 2008
* 2008/0313,508 Method and System for Adaptive Interleaving 15 2008
 
ZARBAÑA DIGITAL FUND LLC (3)
7,577,100 System and method for measuring signal to noise values in an adaptive wireless communication system 1 2002
7,177,275 Scheduling method and system for communication systems that offer multiple classes of service 15 2002
* 2003/0165,157 System and method for measuring signal to noise values in an adaptive wireless communication system 12 2002
 
VECTOR SILICON, INC. (1)
8,854,941 Vectored DSL crosstalk cancellation 0 2009
 
APPLE INC. (10)
* 5,852,633 Method for allocating data in a data communication system 61 1996
* 5,822,374 Method for fine gains adjustment in an ADSL communications system 130 1996
* 5,995,568 Method and apparatus for performing frame synchronization in an asymmetrical digital subscriber line (ADSL) system 44 1996
* 6,130,882 Method and apparatus for configuring a communication system 52 1997
* 6,122,247 Method for reallocating data in a discrete multi-tone communication system 53 1997
6,275,522 Method for allocating data and power in a discrete, multi-tone communication system 17 1998
6,259,746 Method for allocating data and power in a discrete multi-tone communication system 41 1998
6,775,241 Method and apparatus for configuring a communication system 11 1999
7,830,855 Method and apparatus for data allocation in an overlap-enabled communication system 0 2004
* 2005/0058,115 Method and apparatus for data allocation in an overlapenable communication system 13 2004
 
GOOGLE TECHNOLOGY HOLDINGS LLC (2)
* 6,219,840 Method for assigning communication resources in a communication system 59 1996
7,016,401 Method and apparatus for automated correlation of digital modulation impairment 7 1999
 
REALTEK SEMICONDUCTOR CORP. (14)
* 6,252,900 Forward compatible and expandable high speed communications system and method of operation 33 1997
* 6,128,335 Software rate adaptable modem with forward compatible and expandable functionality and method of operation 17 1997
* 6,092,122 xDSL DMT modem using sub-channel selection to achieve scaleable data rate based on available signal processing resources 34 1997
* 6,073,179 Program for controlling DMT based modem using sub-channel selection to achieve scaleable data rate based on available signal processing resources 50 1997
* 6,065,060 Modular multiplicative data rate modem and method of operation 31 1997
6,442,195 Multiple low speed sigma-delta analog front ends for full implementation of high-speed data link protocol 60 1997
* 6,128,348 Method for configuring data and energy parameters in a multi-channel communications system 21 1997
* 6,094,459 Circuit for configuring data and energy parameters in a multi-channel communications system 29 1997
* 6,084,917 Circuit for configuring and dynamically adapting data and energy parameters in a multi-channel communications system 71 1997
* 6,075,821 Method of configuring and dynamically adapting data and energy parameters in a multi-channel communications system 72 1997
* 6,084,906 ADSL transceiver implemented with associated bit and energy loading integrated circuit 33 1997
* 6,279,022 System and method for detecting symbol boundary in multi-carrier transmission systems 35 1998
6,292,515 Dual mode bit and gain loading circuit and process 39 2000
6,222,888 Method and circuit for controlling setup of multichannel system 55 2000
 
TELLABS OPERATIONS, INC. (20)
* 6,118,758 Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture 26 1996
* 6,285,654 Apparatus and method for symbol alignment in a multi-point OFDM or DMT digital communications system 37 1997
6,804,192 OFDM/DMT digital communications system including partial sequence symbol processing 16 1999
* 6,690,680 Communication system signal synchronization techniques 14 1999
6,912,194 Digital communication transmission techniques 14 2000
8,050,288 Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems 4 2001
7,616,553 Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system 11 2004
8,547,823 OFDM/DMT/ digital communications system including partial sequence symbol processing 0 2004
7,898,935 OFDM/DMT/digital communications system including partial sequence symbol processing 3 2007
7,613,102 Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system 10 2007
* 2008/0144,731 Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system 11 2007
7,957,965 Communication system noise cancellation power signal calculation techniques 0 2008
7,916,801 Time-domain equalization for discrete multi-tone systems 1 2008
8,102,928 Spectrally constrained impulse shortening filter for a discrete multi-tone receiver 0 2008
8,139,471 Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system 1 2009
8,243,583 OFDM/DMT/digital communications system including partial sequence symbol processing 2 2011
8,315,299 Time-domain equalization for discrete multi-tone systems 1 2011
8,934,457 Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems 0 2011
8,665,859 Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system 0 2012
9,014,250 Filter for impulse response shortening with additional spectral constraints for multicarrier transmission 0 2012
 
DATA JCE LTD (2)
7,443,917 Method and system for transmission of information data over a communication line 6 2004
* 2005/0047,513 Method and system for transmission of information data over a communication line 2 2004
 
RAYTHEON COMPANY (2)
* 6,847,678 Adaptive air interface waveform 54 2003
* 2003/0203,721 Adaptive air interface waveform 7 2003
 
CANON KABUSHIKI KAISHA (2)
* 6,487,614 Interface control system for exchanging signals by superposing signals to an existed signal line using low voltage differential signal 14 1998
* 7,039,120 Device and method for the dynamic allocation of frequencies for multicarrier modulation systems 28 1999
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 5,666,383 Variable rate discrete multiple tone bidirectional transmission 12 1996
 
LUCENT TECHNOLOGIES INC. (4)
* 6,810,030 Dynamic and smart spreading for wideband CDMA 29 1997
* 7,161,956 Adapative quality control loop for link rate adaptation in data packet communications 5 2001
* 2003/0123,477 Adapative quality control loop for link rate adaptation in data packet communications 4 2001
* 2004/0203,476 Method of feedback for HSDPA system using OFMDA 30 2002
 
SIEMENS AKTIENGESELLSCHAFT (1)
* 2002/0089,999 Method for double-ended line qualification and monitoring of xDSL links 9 2002
 
CISCO TECHNOLOGY, INC. (48)
* 5,668,857 Communication server apparatus and method 263 1996
* 6,014,431 Communication server apparatus having four-wire switching interface and method 67 1997
* 5,898,761 Communication server apparatus using digital signal switching and method 105 1997
* 5,852,655 Communication server apparatus having distributed switching and method 102 1997
* 5,781,617 Communication server apparatus using frequency multiplexing and method 131 1997
* 6,088,430 Communication server apparatus and method 24 1997
* 5,905,781 Communication server apparatus and method 161 1997
* 6,160,843 Communication server apparatus providing XDSL services and method 41 1997
* 6,144,711 Spatio-temporal processing for communication 446 1997
6,366,644 Loop integrity test device and method for digital subscriber line (XDSL) communication 29 1997
* 5,999,565 Data communication using a modifiable number of XDSL modems 58 1997
* 6,163,599 Communication server apparatus and method 15 1997
6,385,203 Communication server apparatus and method 103 1998
6,278,728 Remote XDSL transceiver unit and method of operation 17 1998
6,282,273 Communication server apparatus using frequency multiplexing and method 8 1998
6,181,572 Digital subscriber line (xDSL) modem having a multi-layer electromagnetic shield and method of manufacture 6 1998
6,239,672 Wall mount filter for a digital subscriber line (xDSL) network and methods of installation and manufacture 45 1998
6,535,520 System and method of operation for managing data communication between physical layer devices and ATM layer devices 3 1998
6,381,245 Method and apparatus for generating parity for communication between a physical layer device and an ATM layer device 4 1998
6,169,788 Communication server apparatus having distributed switching and method 15 1998
6,522,668 System and method for special signaling with customer premises equipment 9 1998
* 6,115,226 Apparatus for lightning strike survivability and post-strike operability 0 1998
* 5,999,540 Rate adaptive XDSL communication system and method 37 1998
* 6,161,161 System and method for coupling a local bus to a peripheral component interconnect (PCI) bus 16 1999
6,658,049 xDSL repeater system and method 9 1999
6,553,075 Method and apparatus for determining crosstalk 14 1999
6,389,493 System and method for dynamically allocating bandwidth to a plurality of slave cards coupled to a bus 11 1999
* 6,452,981 Spatio-temporal processing for interference handling 218 1999
* 6,377,631 Transmitter incorporating spatio-temporal processing 141 1999
* 6,483,870 Data communication using a modifiable number of XDSL modems 39 1999
6,389,065 Rate adaptive XDSL communication system and method 15 1999
6,870,834 Communication server apparatus providing XDSL services and method 3 2000
6,963,641 Method and apparatus for providing variable attenuation to data signals in an XDSL frequency range 1 2000
6,888,899 Spatio-temporal processing for communication 105 2002
7,020,164 System and method for special signaling with customer premises equipment 1 2002
7,006,520 System and method of operation for managing data communication between physical layer devices and ATM layer devices 1 2003
7,203,249 Spatio-temporal processing for communication 44 2005
8,116,298 Communication server apparatus providing XDSL services and method 2 2005
7,145,971 Spatio-temporal processing for communication 51 2005
7,555,060 Spatio-temporal processing for communication 26 2006
7,664,188 Spatio-temporal processing for communication 19 2007
7,830,795 Method and apparatus for a self-correcting bandwidth request/grant protocol in a wireless communication system 6 2009
7,826,560 Spatio-temporal processing for communication 25 2009
8,036,307 Spatio-temporal processing for communication 18 2010
* 2011/0019,771 Spatio-Temporal Processing for Communication 5 2010
8,442,152 Spatio-temporal processing for communication 2 2011
8,755,458 Spatio-temporal processing for communication 0 2013
9,184,820 Spatio-temporal processing for communication 0 2014
 
INTRATECH, INC. (3)
* 6,532,256 Method and apparatus for signal transmission and reception 107 2001
6,735,264 Compensation for non-linear distortion in a modem receiver 14 2001
7,173,966 Compensation for non-linear distortion in a modem receiver 10 2004
 
CISCO SYSTEMS, INC. (1)
* 2003/0072,382 Spatio-temporal processing for communication 37 2002
 
FUJITSU LIMITED (1)
6,735,244 Data transmission system and receiver unit thereof 65 2000
 
MOTOROLA, INC. (2)
* 5,822,372 Multicarrier system using subchannel characteristics to implement different error rates within a data stream 80 1996
* 6,061,405 Time domain source matched multicarrier quadrature amplitude modulation (QAM) method and apparatus 22 1997
 
AT&T INTELLECTUAL PROPERTY II, L.P. (3)
7,570,706 Multi-frequency data transmission channel power allocation 0 2006
7,627,024 Multi-frequency data transmission channel power allocation 0 2006
7,936,841 Multi-frequency data transmission channel power allocation 1 2009
 
ORANGE (2)
* 8,861,640 Transmission method taking echo into account 0 2009
* 2011/0170,633 TRANSMISSION METHOD TAKING ECHO INTO ACCOUNT 1 2009
 
INTEL CORPORATION (13)
7,321,614 Apparatus and methods for communicating using symbol-modulated subcarriers 19 2003
* 2005/0068,916 Apparatus and methods for communicating using symbol-modulated subcarriers 8 2003
7,213,197 Adaptive bit loading with low density parity check forward error correction 13 2003
7,333,556 System and method for selecting data rates to provide uniform bit loading of subcarriers of a multicarrier communication channel 84 2004
* 2005/0152,465 System and method for selecting data rates to provide uniform bit loading of subcarriers of a multicarrier communication channel 20 2004
* 7,392,016 Data transmission rate control 7 2005
* 2005/0215,263 Data transmission rate control 3 2005
7,672,365 Apparatus and methods for communicating using symbol-modulated subcarriers 5 2007
* 2007/0291,639 APPARATUS AND METHODS FOR COMMUNICATING USING SYMBOL-MODULATED SUBCARRIERS 12 2007
8,045,449 OFDM receiver and methods for operating in high-throughput and increased range modes 1 2009
8,315,321 Method and mobile communication station for communicating OFDM symbols using two or more antennas 2 2009
8,730,894 Variable bandwidth OFDM receiver and methods for receiving OFDM signals of different bandwidths 0 2011
8,824,582 Base station and method for channel coding and link adaptation 0 2012
 
NIPPON TELEGRAPH AND TELEPHONE CORPORATION (2)
* 7,113,702 Wavelength division multiplexing optical transmission system and transmission method 7 2002
* 2003/0030,865 Wavelength division multiplexing optical transmission system and transmission method 2 2002
 
STMICROELECTRONICS S.R.L. (2)
* 7,664,169 Method and system for improving modem performance, computer program product therefor 0 2006
* 2007/0140,325 Method and system for improving modem performance, computer program product therefor 0 2006
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
6,522,731 Data communication apparatus 67 1999
 
MICROSEMI SEMICONDUCTOR (U.S.) INC. (2)
* 6,011,781 Multipoint access protocol utilizing a point-to-point methodology 46 1997
6,226,356 Method and apparatus for power regulation of digital data transmission 34 1998
 
SIGMATEL, INC. (1)
* 7,685,333 Method and system for communicating with memory devices utilizing selected timing parameters from a timing table 0 2005
 
STMICROELECTRONICS N.V. (2)
* 6,751,261 Synchronisation 23 1999
* 6,865,232 Multi-carrier transmission systems 46 1999
 
WI-LAN INC. (28)
6,192,068 Multicode spread spectrum communications system 64 1996
RE37802 Multicode direct sequence spread spectrum 84 1998
* 6,925,068 Method and apparatus for allocating bandwidth in a wireless communication system 112 1999
6,320,897 Multicode spread spectrum communications system 62 1999
8,189,514 Method and apparatus for allocating bandwidth in a wireless communication system 13 2005
8,249,051 Method and system for adaptively obtaining bandwidth allocation requests 13 2008
8,243,663 Method and system for adaptively obtaining bandwidth allocation requests 13 2008
* 2008/0232,391 METHOD AND SYSTEM FOR ADAPTIVELY OBTAINING BANDWIDTH ALLOCATION REQUESTS 24 2008
* 2008/0232,342 METHOD AND SYSTEM FOR ADAPTIVELY OBTAINING BANDWIDTH ALLOCATION REQUESTS 23 2008
8,462,809 Method and system for adaptively obtaining bandwidth allocation requests 0 2009
8,462,810 Method and system for adaptively obtaining bandwidth allocation requests 0 2009
8,320,406 Method and system for adaptively obtaining bandwidth allocation requests 0 2009
* 2009/0207,795 METHOD AND SYSTEM FOR ADAPTIVELY OBTAINING BANDWIDTH ALLOCATION REQUESTS 21 2009
* 2009/0168,802 METHOD AND SYSTEM FOR ADAPTIVELY OBTAINING BANDWIDTH ALLOCATION REQUESTS 22 2009
8,315,640 Methods and systems for transmission of multiple modulated signals over wireless networks 1 2009
8,027,298 Methods and systems for transmission of multiple modulated signals over wireless networks 13 2009
* 2010/0150,093 Methods and Systems for Transmission of Multiple Modulated Signals Over Wireless Networks 12 2009
8,665,898 Method and system for adaptively obtaining bandwidth allocation requests 0 2010
* 2010/0157,928 Method and System For Adaptively Obtaining Bandwidth Allocation Requests 25 2010
8,654,664 Methods and systems for transmission of multiple modulated signals over wireless networks 0 2011
8,462,723 Methods and systems for transmission of multiple modulated signals over wireless networks 0 2011
8,249,014 Methods and systems for transmission of multiple modulated signals over wireless networks 14 2011
8,457,061 Method and system for adaptively obtaining bandwidth allocation requests 0 2011
8,615,020 Method and system for adaptively obtaining bandwidth allocation requests 0 2011
8,462,761 Method and system for adaptively obtaining bandwidth allocation requests 0 2011
8,457,145 Method and apparatus for bandwidth request/grant protocols in a wireless communication system 0 2012
8,787,924 Methods and systems for transmission of multiple modulated signals over wireless networks 0 2012
8,929,905 Methods and systems for transmission of multiple modulated signals over wireless networks 0 2013
 
CENTURYLINK INTELLECTUAL PROPERTY LLC (36)
8,743,703 System and method for tracking application resource usage 0 2007
8,619,600 System and method for establishing calls over a call path having best path metrics 21 2007
8,537,695 System and method for establishing a call being received by a trunk on a packet network 26 2007
8,531,954 System and method for handling reservation requests with a connection admission control engine 4 2007
8,407,765 System and method for restricting access to network performance information tables 32 2007
8,307,065 System and method for remotely controlling network operators 40 2007
8,223,655 System and method for provisioning resources of a packet network based on collected network performance information 53 2007
8,374,090 System and method for routing data on a packet network 137 2010
8,687,614 System and method for adjusting radio frequency parameters 2 2010
8,879,391 System and method for using network derivations to determine path states 1 2011
8,619,596 System and method for using centralized network performance tables to manage network communications 25 2012
8,619,820 System and method for enabling communications over a number of packet networks 20 2012
8,509,082 System and method for load balancing network resources using a connection admission control engine 84 2012
8,570,872 System and method for selecting network ingress and egress 17 2012
8,520,603 System and method for monitoring and optimizing network performance to a wireless device 10 2012
8,743,700 System and method for provisioning resources of a packet network based on collected network performance information 0 2012
8,488,495 System and method for routing communications between packet networks based on real time pricing 0 2012
8,472,326 System and method for monitoring interlayer devices and optimizing network performance 1 2012
9,094,257 System and method for selecting a content delivery network 0 2012
8,750,158 System and method for differentiated billing 1 2012
9,240,906 System and method for monitoring and altering performance of a packet network 0 2012
9,112,734 System and method for generating a graphical user interface representative of network performance 1 2012
9,225,609 System and method for remotely controlling network operators 0 2012
8,811,160 System and method for routing data on a packet network 0 2013
9,241,271 System and method for restricting access to network performance information 1 2013
8,976,665 System and method for re-routing calls 1 2013
9,054,915 System and method for adjusting CODEC speed in a transmission path during call set-up due to reduced transmission performance 0 2013
9,241,277 System and method for monitoring and optimizing network performance to a wireless device 0 2013
9,225,646 System and method for improving network performance using a connection admission control engine 0 2013
9,094,261 System and method for establishing a call being received by a trunk on a packet network 2 2013
9,253,661 System and method for modifying connectivity fault management packets 0 2013
9,154,634 System and method for managing network communications 0 2013
9,042,370 System and method for establishing calls over a call path having best path metrics 0 2013
9,014,204 System and method for managing network communications 3 2013
9,054,986 System and method for enabling communications over a number of packet networks 0 2013
9,118,583 System and method for re-routing calls 0 2015
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (3)
* 6,542,460 Relating to multidirectional communication systems 14 1998
* 6,430,148 Multidirectional communication systems 53 1998
* 2004/0184,810 Rate adaptive optical communication system and method thereof 12 2004
 
RONDEL TECHNOLOGY FACILITY L.L.C. (2)
7,720,379 Optical packet switching apparatus and methods 1 2008
* 2009/0129,775 OPTICAL PACKET SWITCHING APPARATUS AND METHODS 12 2008
 
OMRON CORPORATION (1)
* 2004/0199,352 Method of judging communication stability of network system and master unit, slave and repeater therefor 0 2004
 
HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP (7)
6,704,317 Multi-carrier LAN modem server 49 1998
6,377,683 Low complexity frequency domain echo canceller for DMT transceivers 50 1998
* 6,732,323 Method of selecting initialization parameters for multi-channel data communication with forward error correction 5 2000
* 7,020,212 Method and system for a multiple dimensional adaptive frequency domain noise canceler for DMT transceivers 18 2001
6,718,493 Method and apparatus for selection of ARQ parameters and estimation of improved communications 2 2001
6,891,887 Multi-carrier LAN adapter device using interpolative equalizer 15 2001
7,137,047 Method and apparatus for selection of ARQ parameters and estimation of improved communications 30 2004
 
FREESCALE SEMICONDUCTOR, INC. (2)
* 5,966,054 Method and apparatus for providing a clocking signal 3 1998
* 6,047,025 Method and apparatus for equallization in an asymmetric digital aubscriber line communications system 18 1998
 
BENHOV GMBH, LLC (1)
RE42002 Apparatus and method for high speed data communication 0 2006
 
DAPHIMO CO. B.V., LLC (9)
* 2004/0085,987 Splitterless multicarrier modem 11 2003
* 2004/0044,942 Method for seamlessly changing power modes in an ADSL system 3 2003
* 2005/0083,972 Adaptive allocation for variable bandwidth multicarrier communication 2 2004
* 2004/0223,510 Method and multi-carrier transceiver supporting dynamic switching between active application sets 13 2004
* 2006/0274,840 Method for seamlessly changing power modes in an ADSL system 1 2005
* 2006/0188,035 Method for seamlessly changing power modes in an ADSL system 2 2006
* 2007/0019,755 METHOD FOR SEAMLESSLY CHANGING POWER MODES IN AN ADSL SYSTEM 11 2006
* 2007/0133,704 METHOD FOR SEAMLESSLY CHANGING POWER MODES IN AN ADSL SYSTEM 13 2007
* 2007/0248,154 SPLITTERLESS MULTICARRIER MODEM 3 2007
 
Adaptix, Inc. (30)
8,005,479 Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems 25 2002
* 2006/0154,684 Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems 16 2002
7,782,985 Automatic frequency offset compensation in a TDD wireless OFDM communication system 23 2007
* 2008/0137,563 Automatic frequency offset compensation in a TDD wireless OFDM communication system 1 2007
8,040,855 Communication system using OFDM for one direction and DSSS for another direction 2 2007
* 2007/0223,406 COMMUNICATION SYSTEM USING OFDM FOR ONE DIRECTION AND DSSS FOR ANOTHER DIRECTION 9 2007
7,715,358 OFDMA with adaptive subcarrier-cluster configuration and selective loading 25 2007
7,650,152 Multi-carrier communications with adaptive cluster configuration and switching 21 2007
7,489,934 OFDMA with adaptive subcarrier-cluster configuration and selective loading 24 2007
8,738,020 Multi-carrier communications with adaptive cluster configuration and switching 12 2009
7,933,244 Multi-carrier communications with group-based subcarrier allocation 21 2009
8,797,970 Method and system for switching antenna and channel assignments in broadband wireless networks 15 2009
8,036,199 OFDMA with adaptive subcarrier-cluster configuration and selective loading 18 2010
8,873,516 Communication system using OFDM for one direction and DSSS for another direction 0 2010
8,743,717 Multi-carrier communications with adaptive cluster configuration and switching 13 2011
8,750,888 Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems 1 2011
8,964,719 OFDMA with adaptive subcarrier-cluster configuration and selective loading 6 2011
8,891,414 Multi-carrier communications with adaptive cluster configuration and switching 8 2012
8,743,729 Multi-carrier communications with adaptive cluster configuration and switching 11 2012
8,760,992 Method and system for switching antenna and channel assignments in broadband wireless networks 11 2013
8,767,702 Multi-carrier communications with adaptive cluster configuration and switching 10 2013
8,750,238 Multi-carrier communications with adaptive cluster configuration and switching 11 2013
8,958,386 Multi-carrier communications with adaptive cluster configuration and switching 6 2014
8,934,445 Multi-carrier communications with adaptive cluster configuration and switching 6 2014
8,934,375 OFDMA with adaptive subcarrier-cluster configuration and selective loading 6 2014
9,191,138 OFDMA with adaptive subcarrier-cluster configuration and selective loading 0 2015
9,344,211 OFDMA with adaptive subcarrier-cluster configuration and selective loading 0 2015
9,219,572 OFDMA with adaptive subcarrier-cluster configuration and selective loading 1 2015
9,203,553 OFDMA with adaptive subcarrier-cluster configuration and selective loading 1 2015
9,210,708 OFDMA with adaptive subcarrier-cluster configuration and selective loading 1 2015
 
HALLIBURTON ENERGY SERVICES, INC. (1)
* 6,657,551 Downhole telemetry system having discrete multi-tone modulation and dynamic bandwidth allocation 18 2001
 
NEC CORPORATION (6)
6,574,282 Multi-carrier transmission system, transmission unit and transmission method 5 1999
6,510,184 Multi-carrier transmission system and method thereof 49 1999
* 6,434,201 Simply-constructed digital radio communication system capable of changing transmission capacity mode 8 1999
6,714,520 System, apparatus method for multi-carrier transmission 25 1999
7,991,070 Wavelength transmission system and method using 3-dimensional LDPC-coded modulation 2 2008
* 2009/0052,907 WAVELENGTH TRANSMISSION SYSTEM AND METHOD USING 3-DIMENSIONAL LDPC-CODED MODULATION 8 2008
 
FUTUREWEI TECHNOLOGIES, INC. (2)
* 8,442,131 Power reduction for digital subscriber line 0 2009
* 2009/0180,526 Power Reduction for Digital Subscriber Line 3 2009
 
POLYTRAX INFORMATION TECHNOLOGY AKTIENGESELLSCHAFT (1)
6,956,906 Powerline data communication 28 2001
 
MICROSOFT TECHNOLOGY LICENSING, LLC (4)
7,164,669 Multi-carrier communication with time division multiplexing and carrier-selective loading 78 2002
* 2002/0163,879 Multi-carrier communication with time division multiplexing and carrier-selective loading 51 2002
7,414,994 Multi-carrier communication with time division multiplexing and carrier-selective loading 2 2006
* 2007/0064,659 Multi-carrier communication with time division multiplexing and carrier-selective loading 4 2006
 
ACTELIS NETWORKS INC. (2)
7,133,441 High speed access system over copper cable plant 45 2000
* 2005/0220,180 High speed access system over copper cable plant 39 2005
 
THOMSON (2)
* 7,058,140 Sliding-window multi-carrier frequency division multiplexing system 9 2001
* 2002/0041,637 Sliding-window multi-carrier frequency division multiplexing system 8 2001
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (3)
7,376,193 Method for adaptively allocating resources in communication system 5 2003
* 2009/0190,537 METHOD, APPARATUS FOR DYNAMIC RESOURCE ALLOCATION METHOD IN OFDMA-BASED COGNITIVE RADIO SYSTEM AND FORWARD LINK FRAME STRUCTURE THEREOF 26 2006
RE44352 Method for adaptively allocating resources in communication system 0 2010
 
WILLIAM MARSH RICE UNIVERSITY (4)
6,317,495 Spectral optimization and joint signaling techniques with multi-line separation for communication in the presence of crosstalk 57 1998
6,292,559 Spectral optimization and joint signaling techniques with upstream/downstream separation for communication in the presence of crosstalk 66 1998
6,839,429 Spectral optimization for communication under a peak frequency-domain power constraint 46 1999
7,035,400 Signaling Techniques in channels with asymmetric powers and capacities 11 2000
 
CONVERSANT INTELLECTUAL PROPERTY MANAGEMENT INC. (36)
7,746,905 Private telephone network connected to more than one public network 7 2004
8,982,903 Network combining wired and non-wired segments 0 2004
7,680,255 Telephone outlet with packet telephony adaptor, and a network using same 4 2004
7,769,030 Telephone outlet with packet telephony adapter, and a network using same 13 2004
7,633,966 Network combining wired and non-wired segments 20 2005
7,965,735 Local area network of serial intelligent cells 1 2005
8,325,636 Local area network of serial intelligent cells 1 2005
7,702,095 Method and system for providing DC power on local telephone lines 5 2005
8,885,659 Local area network of serial intelligent cells 0 2005
7,715,534 Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets 4 2006
8,107,618 Method and system for providing DC power on local telephone lines 2 2006
7,686,653 Modular outlet 6 2006
8,238,328 Telephone system having multiple distinct sources and accessories therefor 2 2006
8,787,562 Method and system for providing DC power on local telephone lines 0 2006
8,908,673 Local area network of serial intelligent cells 0 2007
8,000,349 Telephone communication system over a single telephone line 3 2007
7,986,708 Local area network of serial intelligent cells 3 2007
7,593,394 Telephone communication system over a single telephone line 0 2007
8,611,528 Outlet add-on module 0 2008
7,990,908 Addressable outlet, and a network using the same 8 2008
8,223,800 Telephone communication system over a single telephone line 0 2008
8,351,582 Network for telephony and data communication 1 2008
8,929,523 Network for telephony and data communication 0 2008
8,982,904 Network combining wired and non-wired segments 0 2009
8,873,575 Network combining wired and non-wired segments 0 2009
8,761,186 Telephone outlet with packet telephony adapter, and a network using same 0 2010
8,472,593 Telephone outlet with packet telephony adaptor, and a network using same 1 2010
8,363,797 Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets 3 2010
8,873,586 Network combining wired and non-wired segments 0 2010
8,867,506 Network combining wired and non-wired segments 0 2010
8,582,598 Local area network for distributing data communication, sensing and control signals 1 2012
8,559,422 Telephone communication system over a single telephone line 0 2012
8,848,725 Network combining wired and non-wired segments 0 2012
8,867,523 Local area network of serial intelligent cells 0 2012
8,855,277 Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets 0 2013
8,885,660 Local area network of serial intelligent cells 0 2013
 
QUALCOMM INCORPORATED (39)
7,688,899 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 9 2001
* 2003/0048,856 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 71 2001
7,986,672 Method and apparatus for channel quality feedback in a wireless communication 11 2002
* 2003/0161,285 Method and apparatus for channel quality feedback in a wireless communication 31 2002
8,194,770 Coded MIMO systems with selective channel inversion applied per eigenmode 9 2002
8,218,609 Closed-loop rate control for a multi-channel communication system 13 2003
8,320,301 MIMO WLAN system 23 2003
8,208,364 MIMO system with multiple spatial multiplexing modes 21 2003
8,169,944 Random access for wireless multiple-access communication systems 13 2003
8,170,513 Data detection and demodulation for wireless communication systems 17 2003
8,134,976 Channel calibration for a time division duplexed communication system 16 2003
* 7,616,711 Frequency domain filtering to improve channel estimation in multicarrier systems 0 2004
8,570,988 Channel calibration for a time division duplexed communication system 13 2005
* 7,466,749 Rate selection with margin sharing 20 2005
* 2006/0256,848 Rate selection wtih margin sharing 7 2005
8,358,714 Coding and modulation for multiple data streams in a communication system 14 2005
8,934,329 Transmit diversity processing for a multi-antenna communication system 1 2005
7,649,954 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 6 2006
* 2006/0291,582 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 20 2006
8,145,179 Data detection and demodulation for wireless communication systems 17 2007
8,203,978 Multi-mode terminal in a wireless MIMO system 18 2007
9,240,871 MIMO WLAN system 0 2008
8,913,529 MIMO WLAN system 2 2008
8,483,188 MIMO system with multiple spatial multiplexing modes 17 2008
8,355,313 MIMO system with multiple spatial multiplexing modes 8 2008
8,462,643 MIMO WLAN system 43 2008
8,855,226 Rate selection with margin sharing 4 2008
8,873,365 Transmit diversity processing for a multi-antenna communication system 2 2009
8,040,965 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 2 2009
8,488,706 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 0 2009
* 2010/0104,039 METHOD AND APPARATUS FOR PROCESSING DATA FOR TRANSMISSION IN A MULTI-CHANNEL COMMUNICATION SYSTEM USING SELECTIVE CHANNEL INVERSION 5 2009
9,031,097 MIMO system with multiple spatial multiplexing modes 0 2009
8,477,858 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 0 2010
9,312,935 Pilots for MIMO communication systems 0 2011
8,711,763 Random access for wireless multiple-access communication systems 2 2012
8,750,151 Channel calibration for a time division duplexed communication system 4 2012
9,048,892 MIMO system with multiple spatial multiplexing modes 1 2013
9,154,274 OFDM communication system with multiple OFDM symbol sizes 0 2013
9,013,974 MIMO WLAN system 4 2014
 
ATHEROS COMMUNICATIONS, INC. (1)
* 2003/0039,317 Method and apparatus for constructing a sub-carrier map 59 2001
 
AT&T BLS INTELLECTUAL PROPERTY, INC. (1)
7,292,560 Wireless broadband service 3 2004
 
KAON SYSTEMS, INC. (19)
7,072,315 Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks 143 2000
6,870,808 Channel allocation in broadband orthogonal frequency-division multiple-access/space-division multiple-access networks 137 2000
6,947,748 OFDMA with adaptive subcarrier-cluster configuration and selective loading 120 2000
6,940,827 Communication system using OFDM for one direction and DSSS for another direction 154 2001
* 2002/0159,422 Communication system using OFDM for one direction and DSSS for another direction 111 2001
* 7,146,172 Multi-carrier communications with adaptive cluster configuration and switching 78 2001
* 6,904,283 Multi-carrier communications with group-based subcarrier allocation 177 2001
* 2003/0169,681 Multi-carrier communications with group-based subcarrier allocation 82 2001
* 2002/0147,017 Multi-carrier communications with adaptive cluster configuration and switching 69 2001
6,751,444 Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems 177 2001
7,355,962 Multi-carrier communications with group-based subcarrier allocation 26 2005
* 2005/0220,002 Multi-carrier communications with group-based subcarrier allocation 32 2005
7,454,212 OFDMA with adaptive subcarrier-cluster configuration and selective loading 23 2005
* 2006/0083,210 OFDMA with adaptive subcarrier-cluster configuration and selective loading 26 2005
7,852,812 Communication system using OFDM for one direction and DSSS for another direction 2 2005
* 2006/0067,278 Communication system using OFDM for one direction and DSSS for another direction 25 2005
7,379,742 Multi-carrier communications with adaptive cluster configuration and switching 26 2006
7,573,850 Multi-carrier communications with group-based subcarrier allocation 23 2007
* 2008/0043,610 Multi-carrier communications with group-based subcarrier allocation 6 2007
 
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY (1)
7,593,426 Bit rate and power allocation for multi-carrier communication systems 4 2004
 
THOMSON LICENSING (2)
* 7,558,347 Method and device for selecting an antenna for receipt of a multi-carrier signal 0 2002
* 2005/0063,496 Method of selecting a receiving path and receiving device comprising sereral receiving paths 15 2004
 
AWARE, INC. (1)
* 2003/0007,509 Multicarrier communication with variable overhead rate 6 2002
 
3G LICENSING S.A. (1)
7,864,728 Method of allocating subbands to streams of a multichannel link in a multicarrier modulation communications system 0 2006
 
GENERAL DYNAMICS GOVERNMENT SYSTEMS CORPORATION (5)
* 5,987,069 Method and apparatus for variably allocating upstream and downstream communication spectra 52 1996
* 6,167,095 Method and apparatus for variably allocating upstream and downstream communication spectra 39 1997
* 6,091,787 Symbol lock detector 2 1997
6,304,594 Interference detection and avoidance technique 60 1998
6,212,229 Adaptive pre-emphasis technique 37 1998
 
AVIAT U.S., INC. (4)
8,630,600 Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment 3 2012
9,077,425 Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment 0 2014
9,042,853 Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment 0 2014
9,337,965 Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment 0 2015
 
VECIMA NETWORKS INC. (4)
7,327,795 System and method for wireless communication systems 36 2003
7,327,800 System and method for data detection in wireless communication systems 76 2003
* 2004/0190,636 System and method for wireless communication systems 29 2003
* 2003/0218,973 System and method for data detection in wireless communication systems 34 2003
 
ALCATEL N.V. (2)
* 5,809,030 Frequency division multiple access (FDMA) dedicated transmission system, transmitter and receiver used in such a transmission system 39 1996
* 5,812,599 Method for allocating data elements in multicarrier applications and equipment to perform this method 111 1996
 
ARRIS ENTERPRISES, INC. (1)
* 6,389,068 Sliced bandwidth distortion prediction 35 2000
 
MEGAWAVE AUDIO LLC (1)
6,778,649 Method and apparatus for transmitting coded audio signals through a transmission channel with limited bandwidth 3 2002
 
RPX CORPORATION (3)
* 7,519,132 Reduced complexity multicarrier precoder 2 2006
* 8,175,188 Reduced complexity multicarrier precoder 0 2009
* 2009/0116,576 REDUCED COMPLEXITY MULTICARRIER PRECODER 5 2009
 
POM GROUP, THE (1)
7,051,258 Retransmission procedure and apparatus for handshaking protocol 1 2003
 
NATIONAL UNIVERSITY OF SINGAPORE (1)
* 6,438,161 Method of designing an equalizer 5 1999
 
FRANCE TELECOM (1)
* 2008/0025,421 Method of Optimizing the Distribution of Transmission Power Between Sub-Channels for Frequency-Division Multiplex Transmission 1 2004
 
LANTIQ DEUTSCHLAND GMBH (8)
6,522,666 Multicarrier communication with variable overhead rate 5 2000
* 2006/0176,942 On-line reconfiguration and synchronization protocol for multi-carrier DSL 10 2005
8,009,749 Method of transmission power control and communication device 2 2007
* 2009/0141,816 Method of Transmission Power Control and Communication Device 0 2007
8,204,100 Methods and apparatuses for data transmission 0 2009
* 2010/0177,838 Methods and Apparatuses for Data Transmission 4 2009
* 8,504,888 Communication devices and methods with online parameter change 0 2010
* 2011/0276,826 COMMUNICATION DEVICES AND METHODS WITH ONLINE PARAMETER CHANGE 2 2010
 
SMART LINK LTD. (2)
* 7,145,956 Method for achieving a target bit rate in a multi-carrier data communication system 7 2002
* 2004/0001,552 Method for achieving a target bit rate in a multi-carrier data communication system 3 2002
 
ALCATEL (6)
* 6,351,473 Method to allocate data bits, multi-carrier transmitter and receiver using the method, and related allocation message generator 8 1998
* 6,246,725 Multi-carrier telecommunication system with power adaptation means 15 1998
6,917,795 Multi-carrier receiver with improved radio frequency interference canceling 1 2002
* 2002/0123,321 Multi-carrier receiver with improved radio frequency interference canceling 3 2002
* 2005/0190,826 Digital subscriber line modem with bitloading using channel condition model 25 2005
7,991,072 Multi-carrier modem transmitter with controlled transmit signal quality degradation for improving stability of operation 1 2005
 
UTSTARCOM, INC. (1)
6,263,016 Methods for interfacing a subscriber link to digital networks 53 1998
 
F. POSZAT HU, L.L.C. (7)
7,106,967 Optical packet switching apparatus and methods 21 2001
* 2003/0048,506 Optical packet switching apparatus and methods 6 2001
7,162,155 Optical packet switching apparatus and methods 11 2002
* 2003/0043,430 Optical packet switching apparatus and methods 3 2002
7,218,853 Optical packet switching apparatus and methods 0 2006
7,324,752 Optical packet switching apparatus and methods 1 2006
* 2007/0098,408 OPTICAL PACKET SWITCHING APPARATUS AND METHODS 8 2006
 
GLOBESPANVIRATA, INC. (1)
* 2003/0202,612 Method and system for rate enhanced SHDSL 32 2002
 
AT&T CORP. (7)
* 6,144,695 Method and apparatus for reducing near-end crosstalk (NEXT) in discrete multi-tone modulator/demodulators 39 1997
* 6,711,121 Orthogonal code division multiplexing for twisted pair channels 23 1999
6,678,316 Method and apparatus for reducing near-end crosstalk (NEXT) in discrete multi-tone modulator/demodulators 5 2000
7,139,323 Multi-frequency data transmission channel power allocation 12 2002
* 2003/0084,394 Multi-frequency data transmission channel power allocation 6 2002
* 2006/0171,480 Multi-frequency data transmission channel power allocation 26 2006
* 2009/0092,192 Multi-frequency data transmission channel power allocation 2 2006
* Cited By Examiner