US Patent No: 6,473,467

Number of patents in Portfolio can not be more than 2000

Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system

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Abstract

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Channel state information (CSI) can be used by a communications system to precondition transmissions between transmitter units and receiver units. In one aspect of the invention, disjoint sub-channel sets are assigned to transmit antennas located at a transmitter unit. Pilot symbols are generated and transmitted on a subset of the disjoint sub-channels. Upon receipt of the transmitted pilot symbols, the receiver units determine the CSI for the disjoint sub-channels that carried pilot symbols. These CSI values are reported to the transmitter unit, which will use these CSI values to generate CSI estimates for the disjoint sub-channels that did not carry pilot symbols. The amount of information necessary to report CSI on the reverse link can be further minimized through compression techniques and resource allocation techniques.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA15975

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jalali, Ahmad San Diego, CA 123 3289
Wallace, Mark Bedford, MA 68 5237
Walton, Jay R Westford, MA 44 4761

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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* 2002/0052,184 Avoidance of interference between items of electrical apparatus 0 2002
 
HITACHI, LTD. (1)
* 2005/0078,628 Base station transmitting data spread with a plurality of slots respective to a plurality of radio terminals and codes, and a cellular system thereof 3 2004
 
WIONICS RESEARCH (1)
* 2005/0265,225 MIMO system and mode table 27 2005
 
InterDigital Technology Corporation (17)
7,170,926 Efficient multiple input multiple output system for multi-path fading channels 16 2002
* 2003/0125,090 Efficient multiple input multiple output system for multi-path fading channels 6 2002
7,593,357 Transmit processing using receiver functions 1 2002
* 2003/0185,192 Transmit processing using receiver functions 4 2002
* 8,270,512 Method and apparatus for subcarrier and antenna selection in MIMO-OFDM system 1 2005
* 2006/0034,382 Method and apparatus for subcarrier and antenna selection in MIMO-OFDM system 39 2005
* 7,773,562 Soft and softer handover in time division duplex code division multiple access (TDD-CDMA) networks 2 2005
* 2006/0007,896 Soft and softer handover in time division duplex code division multiple access (TDD-CDMA) networks 4 2005
8,830,846 Method and system for improving responsiveness in exchanging frames in a wireless local area network 2 2006
* 2006/0248,429 Method and system for improving responsiveness in exchanging frames in a wireless local area network 40 2006
7,391,805 Method and apparatus for transferring signals in a wireless communication system 0 2007
7,613,226 Method and apparatus for transferring signals in a wireless communication system 0 2008
8,531,938 Transmit processing using receiver functions 0 2009
8,073,067 Method and apparatus for transferring signals in a wireless communication system 0 2009
9,160,492 Method and apparatus for combining space-frequency block coding spatial multiplexing and beamforming in a MIMO-OFDM system 0 2012
8,861,632 Method and apparatus for subcarrier and antenna selection in MIMO-OFDM system 0 2012
9,054,924 Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system 0 2013
 
GOOGLE TECHNOLOGY HOLDINGS LLC (8)
* 6,912,195 Frequency-domain MIMO processing method and system 34 2001
* 6,754,169 Method and system of operation for a variable transmission mode multi-carrier communication system 27 2001
8,249,607 Scheduling in wireless communication systems 1 2006
* 2007/0230,412 Scheduling in wireless communication systems 22 2006
* 8,559,295 Method and apparatus for pilot signal transmission 2 2006
* 2007/0036,066 METHOD AND APPARATUS FOR PILOT SIGNAL TRANSMISSION 29 2006
8,045,519 Scheduling in wireless communication systems 7 2009
* 2010/0020,716 Scheduling in Wireless Communication Systems 11 2009
 
APPLE INC. (54)
* 7,009,931 Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications 59 2000
* 6,985,434 Adaptive time diversity and spatial diversity for OFDM 177 2000
* 2002/0122,382 Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications 14 2000
* 2002/0122,383 Adaptive time diversity and spatial diversity for OFDM 48 2000
* 7,548,506 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 96 2002
* 2003/0072,255 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 171 2002
8,462,611 Pilot design for OFDM systems with four transmit antennas 6 2005
* 2008/0253,279 Pilot Design for Ofdm Systems with Four Transmit Antennas 95 2005
* 8,588,326 System and method for mapping symbols for MIMO transmission 0 2005
* 2009/0003,466 System and Method for Mapping Symbols for Mimo Transmission 75 2005
* 7,336,601 Adaptive time diversity and spatial diversity for OFDM 21 2005
8,374,650 Methods for optimal collaborative MIMO-SDMA 7 2006
8,073,486 Methods for opportunistic multi-user beamforming in collaborative MIMO-SDMA 8 2006
* 2008/0075,058 Methods for opportunistic multi-user beamforming in collaborative MIMO-SDMA 38 2006
* 8,626,104 Generalized codebook design method for limited feedback systems 8 2006
* 2008/0080,449 Generalized codebook design method for limited feedback systems 74 2006
* 2007/0066,362 Frame structure, system and method for OFDM communications 23 2006
* 2007/0064,586 Method and system for performing cell selection for OFDM communications 10 2006
* 2007/0025,236 Method and system for performing synchronization in OFDM systems 10 2006
* 8,085,814 Frame structure, system and method for OFDM communications 5 2006
8,018,975 Method and system for performing synchronization in OFDM systems 8 2006
* 7,912,012 Method and system for performing cell selection for OFDM communications 5 2006
7,801,019 Adaptive time diversity and spatial diversity for OFDM 2 2006
* 2007/0036,069 Adaptive time diversity and spatial diversity for OFDM 18 2006
8,073,069 Multi-user MIMO-SDMA for finite rate feedback systems 21 2007
* 2008/0165,875 Multi-user MIMO-SDMA for finite rate feedback systems 91 2007
8,020,075 Channel quality index feedback reduction for broadband systems 4 2007
7,961,807 Reference signaling scheme using compressed feedforward codebooks for multi-user, multiple input, multiple output (MU-MIMO) systems 30 2007
8,547,986 System and method for resource block-specific control signaling 2 2007
* 2008/0267,057 System and method for resource block-specific control signaling 5 2007
* 7,403,570 Preamble design for multiple input--multiple output (MIMO), orthogonal frequency division multiplexing (OFDM) system 29 2007
7,688,710 Adaptive time diversity and spatial diversity for OFDM 13 2007
7,978,623 Channel rank updates in multiple-input multiple-output communication systems 13 2008
8,213,292 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 5 2008
* 2009/0060,076 SYSTEM ACCESS AND SYNCHRONIZATION METHODS FOR MIMO OFDM COMMUNICATIONS SYSTEMS AND PHYSICAL LAYER PACKET AND PREAMBLE 20 2008
8,229,019 MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 4 2010
8,077,599 Adaptive time diversity and spatial diversity for OFDM 2 2010
* 2011/0044,394 Adaptive time diversity and spatial diversity for OFDM 20 2010
8,626,222 Channel rank updates in multiple-input multiple-output communication systems 3 2010
8,199,846 Generalized reference signaling scheme for multi-user, multiple input, multiple output (MU-MIMO) using arbitrarily precoded reference signals 2 2010
8,509,339 Reference signaling scheme using compressed feedforward codebooks for multi-user multiple input multiple output (MU-MIMO) systems 3 2011
8,441,918 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 5 2011
8,429,506 Channel quality index feedback reduction for broadband systems 3 2011
8,339,935 Adaptive time diversity and spatial diversity for OFDM 0 2011
9,172,444 Methods for opportunistic multi-user beamforming in collaborative MIMO-SDMA 0 2011
8,437,422 Multi-user MIMO-SDMA for finite rate feedback systems 1 2011
8,830,816 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 0 2012
9,154,202 MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 0 2012
8,837,272 Adaptive time diversity and spatial diversity for OFDM 1 2012
8,995,402 Pilot design for OFDM systems with four transmit antennas 0 2013
* 2013/0301,400 System Access and Synchronization Methods for MIMO OFDM Communications Systems and Physical Layer Packet and Preamble Design 3 2013
* 9,172,571 System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design 0 2013
* 2014/0036,823 System Access and Synchronization Methods for MIMO OFDM Communications Systems and Physical Layer Packet and Preamble Design 11 2013
9,020,518 Generalized codebook design method for limited feedback systems 0 2014
 
WI-FI ONE, LLC (10)
* 6,842,487 Cyclic delay diversity for mitigating intersymbol interference in OFDM systems 172 2000
7,974,371 Communication method and radio communication apparatus 6 2002
7,688,901 Transmission method, transmission apparatus, and reception apparatus 8 2002
* 2004/0240,571 Transmission method, transmission apparatus, and reception apparatus 24 2004
8,155,224 Transmission method, transmission apparatus, and reception apparatus 6 2010
8,428,182 Communication method and radio communication apparatus 5 2011
8,594,242 Method of receiving modulation symbols 2 2012
8,891,678 Receiving apparatus and receiving method 0 2013
8,744,005 Method and apparatus for generating modulation signals 1 2013
8,934,578 Method of demodulating modulation signals 0 2014
 
KABUSHIKI KAISHA TOSHIBA (3)
* 2007/0070,927 RADIO COMMUNICATION APPARATUS WITH ANTENNAS, RADIO COMMUNICATION SYSTEM AND METHOD 8 2006
8,054,899 Terminal apparatus, base station and communication method 1 2008
* 2009/0010,357 TERMINAL APPARATUS, BASE STATION AND COMMUNICATION METHOD 1 2008
 
VOCALCOMM GROUP, LLC (1)
* 7,782,981 Signal processing apparatus and method 2 2004
 
HOLLYWOOD ENGINEERING, INC. DBA HOLLYWOOD RACKS (1)
7,751,368 Providing CQI feedback to a transmitter station in a closed-loop MIMO system 17 2006
 
WIDEBAND ACCESS, INC. (1)
* 2005/0207,505 Systems and methods for recovering bandwidth in a wireless communication network 10 2002
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (5)
* 7,035,354 CDMA multi-user detection with a real symbol constellation 18 2001
* 2002/0101,910 CDMA multi-user detection with a real symbol constellation 0 2001
* 7,161,975 Enhancing CDMA multiuser detection by constraining soft decisions 0 2002
* 9,094,872 Enhanced resource management for a network system 0 2012
* 2013/0190,026 ENHANCED RESOURCE MANAGEMENT FOR A NETWORK SYSTEM 1 2012
 
LSI CORPORATION (2)
* 8,983,467 Method and apparatus for access point selection using channel correlation in a wireless communication system 0 2004
* 8,964,522 Method and apparatus for communicating orthogonal pilot tones in a multiple antenna communication system 0 2005
 
LUCENT TECHNOLOGIES INC. (5)
* 7,230,910 Optimal channel sounding system 2 2001
* 2002/0101,825 Optimal channel sounding system 7 2001
* 7,421,039 Method and system employing antenna arrays 32 2002
7,154,960 Method of determining the capacity of each transmitter antenna in a multiple input/multiple output (MIMO) wireless system 29 2002
* 2004/0125,900 Method of determining the capacity of each transmitter antenna in a multiple input/multiple out/put (MIMO) wireless system 40 2002
 
CISCO TECHNOLOGY, INC. (2)
* 7,352,688 High data rate wireless bridging 40 2002
8,374,105 High data rate wireless bridging 5 2008
 
FUJITSU LIMITED (7)
* 7,386,058 Transceiver apparatus and transceiving method 19 2005
* 2005/0163,238 Transceiver apparatus and transceiving method 18 2005
* 8,116,241 Wireless communication system and transmission device 1 2005
8,345,641 Radio communication system using multi-antenna transmission technique, and multi-user scheduler therefor 1 2008
* 2008/0285,524 Radio Communication System Using Multi-Antenna Transmission Technique, and Multi-User Scheduler Therefor 10 2008
* 2009/0325,514 WIRELESS COMMUNICATION SYSTEM AND TRANSMISSION DEVICE 0 2009
9,191,091 Radio communication system using multi-antenna transmission technique, and multi-user scheduler therefor 0 2012
 
REARDEN, LLC (23)
7,885,354 System and method for enhancing near vertical incidence skywave (“NVIS”) communication using space-time coding 2 2004
* 7,418,053 System and method for distributed input-distributed output wireless communications 29 2004
* 2006/0023,803 System and method for distributed input-distributed output wireless communications 10 2004
7,711,030 System and method for spatial-multiplexed tropospheric scatter communications 4 2005
* 2007/0025,464 System and method for spatial-multiplexed tropospheric scatter communications 12 2005
7,636,381 System and method for distributed input-distributed output wireless communications 16 2007
* 7,633,994 System and method for distributed input-distributed output wireless communications 10 2007
* 7,599,420 System and method for distributed input distributed output wireless communications 47 2007
* 2008/0130,790 System and method for distributed input distributed output wireless communications 30 2007
* 2008/0118,004 System and method for distributed input-distributed output wireless communications 23 2007
* 2008/0080,631 System and method for ditributed input-distributed output wireless communications 35 2007
8,160,121 System and method for distributed input-distributed output wireless communications 9 2008
8,654,815 System and method for distributed antenna wireless communications 11 2009
8,428,162 System and method for distributed input distributed output wireless communications 3 2009
8,571,086 System and method for DIDO precoding interpolation in multicarrier systems 2 2010
8,170,081 System and method for adjusting DIDO interference cancellation based on signal strength measurements 19 2010
* 2011/0002,410 System and method for power control and antenna grouping in a distributed-input-distributed-output (DIDO) network 18 2010
* 2011/0002,371 System and method for adjusting DIDO interference cancellation based on signal strength measurements 9 2010
* 2010/0316,163 System and method for DIDO precoding interpolation in multicarrier systems 10 2010
8,542,763 Systems and methods to coordinate transmissions in distributed wireless systems via user clustering 3 2010
* 2011/0044,193 SYSTEMS AND METHODS TO COORDINATE TRANSMISSIONS IN DISTRIBUTED WIRELESS SYSTEMS VIA USER CLUSTERING 22 2010
8,971,380 System and method for adjusting DIDO interference cancellation based on signal strength measurements 1 2012
8,989,155 Systems and methods for wireless backhaul in distributed-input distributed-output wireless systems 0 2012
 
MOTOROLA, INC. (1)
* 7,656,969 Dual payload and adaptive modulation 7 2006
 
AT&T INTELLECTUAL PROPERTY II, L.P. (3)
* 8,116,260 Simulcasting MIMO communication system 2 2001
8,320,500 Clustered OFDM with channel estimation 0 2008
* 8,705,452 Simulcasting MIMO communication system 0 2012
 
SIGNAL TRUST FOR WIRELESS INNOVATION (1)
* 2009/0161,783 PER STREAM RATE CONTROL (PSRC) FOR IMPROVING SYSEM EFFICIENCY IN OFDM-MIMO COMMUNICATION SYSTEMS 6 2009
 
INTEL CORPORATION (45)
* 2002/0136,287 Method, system and apparatus for displaying the quality of data transmissions in a wireless communication system 7 2001
7,149,254 Transmit signal preprocessing based on transmit antennae correlations for multiple antennae systems 57 2001
7,336,719 System and method for transmit diversity base upon transmission channel delay spread 16 2001
* 2003/0099,304 System and method for transmit diversity base upon transmission channel delay spread 4 2001
* 7,180,956 Method and apparatus for applying overlaid perturbation vectors for gradient feedback transmit antenna array adaptation 14 2002
7,433,416 Method and apparatus for generating transmit adaptive antenna weights with nulling using binary gradient feedback 18 2002
7,236,538 Method and apparatus for improving transmit antenna weight tracking using channel correlations in a wireless communication system 18 2002
* 2003/0235,252 Method and system of biasing a timing phase estimate of data segments of a received signal 6 2002
* RE40056 Methods of controlling communication parameters of wireless systems 7 2003
* 7,394,858 Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system 13 2003
* 2005/0147,076 Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system 10 2003
* 7,769,097 Methods and apparatus to control transmission of a multicarrier wireless communication channel through multiple antennas 2 2003
* 2005/0157,682 Methods and apparatus to control transmission of a multicarrier wireless communication channel through multiple antennas 6 2003
* 8,289,836 Apparatus and associated methods to introduce diversity in a multicarrier communication channel 0 2004
7,570,696 Multiple input multiple output multicarrier communication system and methods with quantized beamforming feedback 43 2004
7,397,804 System and method for synchronizing data transmission from multiple wireless base transceiver stations to a subscriber unit 13 2004
7,649,861 Multiple antenna multicarrier communication system and method with reduced mobile-station processing 4 2004
* 2006/0114,816 Multiple antenna multicarrier communication system and method with reduced mobile-station processing 15 2004
7,822,128 Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization 15 2004
* 2006/0120,469 Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization 57 2004
7,542,515 Training symbol format for adaptively power loaded MIMO 8 2004
* 2006/0140,290 Training symbol format for adaptively power loaded MIMO 17 2004
7,586,873 Wireless communications system that supports multiple modes of operation 6 2005
7,305,054 Robust multiple chain receiver 2 2005
7,830,977 Providing CQI feedback with common code rate to a transmitter station 4 2006
* 2007/0254,603 PROVIDING CQI FEEDBACK WITH COMMON CODE RATE TO A TRANSMITTER STATION 15 2006
7,738,579 Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system 9 2008
* 2008/0253,471 SYSTEMS AND METHODS FOR ADAPTIVE BIT LOADING IN A MULTIPLE ANTENNA ORTHOGONAL FREQUENCY DIVISION MULTIPLEXED COMMUNICATION SYSTEM 6 2008
* 2009/0075,616 METHOD AND APPARATUS FOR DETERMINING AN OPERATING CONDITION IN A COMMUNICATIONS SYSTEM 2 2008
7,885,346 MIMO transmitter and method for transmitting a group of sequential OFDM symbols in accordance with an IEEE 802.16 communication standard 4 2009
7,822,135 MIMO transmitter and method for transmitting an OFDM symbol in accordance with an IEEE 802.11 communication standard over a plurality of spatial channels 4 2009
* 2009/0252,257 MIMO TRANSMITTER AND METHOD FOR TRANSMITTING AN OFDM SYMBOL IN ACCORDANCE WITH AN IEEE 802.11 COMMUNICATION STANDARD OVER A PLURALITY OF SPATIAL CHANNELS 18 2009
8,345,637 Wireless communications system that supports multiple modes of operation 3 2009
8,428,037 Wireless communications system that supports multiple modes of operation 2 2009
8,126,077 MIMO transmitter and methods for transmitting OFDM symbols with cyclic-delay diversity 6 2009
* 8,139,536 Techniques for explicit feedback delay measurement 1 2010
8,396,147 MIMO transmitter for transmitting a group of sequential OFDM symbols using a plurality of antennas 2 2010
7,953,171 Training symbol format for adaptively power loaded MIMO 0 2010
8,488,709 Providing CQI feedback with common code rate to a transmitter station 0 2010
8,019,010 OFDM transmitter and method for multi-user MIMO transmissions 3 2010
* 2011/0096,856 OFDM TRANSMITTER AND METHOD FOR MULTI-USER MIMO TRANSMISSIONS 8 2010
8,422,583 Providing CQI feedback with common code rate to a transmitter station 0 2011
8,903,003 Communication station and method for transmitting OFDM symbols with cyclic-delay diversity (CDD) 0 2012
8,781,017 Techniques for explicit feedback delay measurement 1 2012
* 8,705,645 MIMO transmitter and method for transmitting OFDM symbols 0 2012
 
MITSUBISHI ELECTRIC CORPORATION (1)
* 2007/0297,576 METHOD AND DEVICE FOR CONTROLLING CHANNEL STATE INFORMATION TRANSFERRED BY A FIRST TELECOMMUNICATION DEVICE TO A SECOND TELECOMMUNICATION DEVICE 2 2007
 
HARRIS CORPORATION (24)
7,394,826 Mobile ad hoc network (MANET) providing quality-of-service (QoS) based unicast and multicast features 10 2003
7,142,866 Load leveling in mobile ad-hoc networks to support end-to-end delay reduction, QoS and energy leveling 0 2003
7,085,290 Mobile ad hoc network (MANET) providing connectivity enhancement features and related methods 19 2003
7,079,552 Mobile ad hoc network (MANET) with quality-of-service (QoS) protocol hierarchy and related methods 30 2003
7,068,605 Mobile ad hoc network (MANET) providing interference reduction features and related methods 9 2003
* 2005/0053,094 Mobile ad hoc network (MANET) providing quality-of-service (QoS) based unicast and multicast features 28 2003
* 2005/0053,005 Mobile ad hoc network (MANET) providing connectivity enhancement features and related methods 8 2003
* 2005/0054,346 Load leveling in mobile ad-hoc networks to support end-to-end delay reduction, QoS and energy leveling 15 2003
* 2005/0053,003 Mobile ad hoc network (MANET) with quality-of-service (QoS) protocol hierarchy and related methods 25 2003
* 2005/0053,007 Route selection in mobile ad-hoc networks based on traffic state information 24 2003
7,903,749 System and method for applying frequency domain spreading to multi-carrier communications signals 5 2006
7,860,147 Method of communicating and associated transmitter using coded orthogonal frequency division multiplexing (COFDM) 6 2006
7,813,433 System and method for communicating data using symbol-based randomized orthogonal frequency division multiplexing (OFDM) with selected subcarriers turned on or off 9 2006
7,751,488 System and method for communicating data using symbol-based randomized orthogonal frequency division multiplexing (OFDM) 10 2006
7,649,951 System and method for communicating data using symbol-based randomized orthogonal frequency division multiplexing (OFDM) with applied frequency domain spreading 9 2006
* 2008/0043,860 System and Method for Communicating Data Using Symbol-Based Randomized Orthogonal Frequency Division Multiplexing (OFDM) With Selected Subcarriers Turned ON or OFF 5 2006
* 2008/0043,812 System and Method for Communicating Data Using Symbol-Based Randomized Orthogonal Frequency Division Multiplexing (OFDM) With Applied Frequency Domain Spreading 2 2006
* 2008/0043,814 Method of Communicating and Associated Transmitter Using Coded Orthogonal Frequency Division Multiplexing (COFDM) 4 2006
* 2008/0043,859 System and Method for Applying Frequency Domain Spreading to Multi-Carrier Communications Signals 3 2006
8,274,921 System and method for communicating data using efficient fast fourier transform (FFT) for orthogonal frequency division multiplexing (OFDM) 0 2008
8,238,454 System and method for communicating data using efficient fast fourier transform (FFT) for orthogonal frequency division multiplexing (OFDM) demodulation 0 2008
8,229,009 System and method for communicating data using efficient fast fourier transform (FFT) for orthogonal frequency division multiplexing (OFDM) modulation 5 2008
* 2009/0245,397 SYSTEM AND METHOD FOR COMMUNICATING DATA USING EFFICIENT FAST FOURIER TRANSFORM (FFT) FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) DEMODULATION 4 2008
* 2009/0245,084 SYSTEM AND METHOD FOR COMMUNICATING DATA USING EFFICIENT FAST FOURIER TRANSFORM (FFT) FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) 30 2008
 
MITSUBISHI DENKI KABUSHIKI KAISHA (4)
* 7,366,249 Method for transmitting optimally interleaved data in a MIMO telecommunication system 5 2004
* 2005/0078,764 Method for transmitting optimally interleaved data in a MIMO telecommunication system 7 2004
* 7,376,203 Method for transmitting uniformly distributed data in a MIMO telecommunication system 3 2005
* 2006/0188,036 Method for transmitting uniformly distributed data in a MIMO telecommunication system 3 2005
 
GEORGIA TECH RESEARCH CORPORATION (2)
* 7,668,266 Crest factor reduction in OFDM using blind selected pilot tone modulation 1 2006
* 2006/0274,868 Crest factor reduction in OFDM using blind selected pilot tone modulation 5 2006
 
SONY MOBILE COMMUNICATIONS AB (2)
6,996,375 Transmit diversity and separating multiple loopback signals 19 2003
* 2004/0203,468 Transmit diversity and separating multiple loopback signals 4 2003
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (15)
* 7,099,269 Methods and apparatus for generating and utilizing training codes in a space division multiplexing communication system 3 2001
* 2002/0118,635 Communication system 11 2001
* 7,277,493 Equalization in orthogonal frequency domain multiplexing 7 2003
* 2004/0146,123 Equalization in orthogonal frequency domain multiplexing 17 2003
* 2007/0230,431 Methods and Apparatus for Backwards Compatible Communication in a Multiple Antenna Communication System Using Fmd-Based Preamble Structures 30 2004
* 2007/0060,073 Method and apparatus for communicating symbols in a multiple input multiple output communication system using interleaved subcarriers across a plurality of antennas 17 2004
* 2005/0124,340 Method and apparatus for access point selection using channel correlation in a wireless communication system 3 2004
* 2007/0058,694 Methods and apparatus for generating and utilizing training codes in a space division multiplexing communication system 4 2006
* 7,978,773 Multi-channel receiver with improved AGC 2 2006
* 2008/0159,446 Multi-channel receiver with improved AGC 6 2006
7,809,343 Multi-channel receiver with improved AGC 4 2007
7,769,357 Multi-channel receiver with improved AGC 1 2007
* 2008/0267,326 Multi-channel receiver with improved AGC 5 2007
* 2008/0268,798 Multi-channel receiver with improved AGC 6 2007
* 8,391,384 Multi-channel receiver with improved AGC 0 2011
 
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE (3)
8,184,726 Method and apparatus for multi-rate control in a multi-channel communication system 8 2008
* 2009/0067,543 Method and Apparatus for Multi-Rate Control in a Multi-Channel Communication System 5 2008
* 2010/0027,704 Method and Apparatus for Data Transmission Based on Signal Priority and Channel Reliability 2 2009
 
ADAPTIX, INC. (25)
7,715,358 OFDMA with adaptive subcarrier-cluster configuration and selective loading 24 2007
7,650,152 Multi-carrier communications with adaptive cluster configuration and switching 19 2007
7,489,934 OFDMA with adaptive subcarrier-cluster configuration and selective loading 23 2007
8,738,020 Multi-carrier communications with adaptive cluster configuration and switching 10 2009
7,933,244 Multi-carrier communications with group-based subcarrier allocation 20 2009
8,797,970 Method and system for switching antenna and channel assignments in broadband wireless networks 12 2009
* 8,036,199 OFDMA with adaptive subcarrier-cluster configuration and selective loading 17 2010
8,743,717 Multi-carrier communications with adaptive cluster configuration and switching 10 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 4 2011
* 2012/0069,755 OFDMA WITH ADAPTIVE SUBCARRIER-CLUSTER CONFIGURATION AND SELECTIVE LOADING 15 2011
8,891,414 Multi-carrier communications with adaptive cluster configuration and switching 7 2012
8,743,729 Multi-carrier communications with adaptive cluster configuration and switching 9 2012
8,760,992 Method and system for switching antenna and channel assignments in broadband wireless networks 9 2013
8,767,702 Multi-carrier communications with adaptive cluster configuration and switching 9 2013
8,750,238 Multi-carrier communications with adaptive cluster configuration and switching 9 2013
8,958,386 Multi-carrier communications with adaptive cluster configuration and switching 4 2014
8,934,445 Multi-carrier communications with adaptive cluster configuration and switching 4 2014
* 8,934,375 OFDMA with adaptive subcarrier-cluster configuration and selective loading 4 2014
* 2014/0269,609 OFDMA WITH ADAPTIVE SUBCARRIER-CLUSTER CONFIGURATION AND SELECTIVE LOADING 9 2014
* 2014/0269,396 OFDMA WITH ADAPTIVE SUBCARRIER-CLUSTER CONFIGURATION AND SELECTIVE LOADING 4 2014
9,191,138 OFDMA with adaptive subcarrier-cluster configuration and selective loading 0 2015
9,219,572 OFDMA with adaptive subcarrier-cluster configuration and selective loading 0 2015
9,203,553 OFDMA with adaptive subcarrier-cluster configuration and selective loading 0 2015
9,210,708 OFDMA with adaptive subcarrier-cluster configuration and selective loading 0 2015
 
HUAWEI TECHNOLOGIES CO., LTD. (1)
* 2008/0130,485 SIGNAL MODULATION METHOD BASED ON ORTHOGONAL FREQUENCY DIVISION MULTIPLEX AND A MODULATION DEVICE THEREOF 4 2008
 
DSP Group Inc. (1)
* 7,173,990 Joint equalization, soft-demapping and phase error correction in wireless system with receive diversity 17 2002
 
NEC CORPORATION (1)
* 8,265,675 MIMO wireless communication system and method by a plurality of base stations and mobile station 2 2008
 
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE (2)
7,627,050 Adaptive transmitting and receiving device and method in wireless communication system using frequency division duplexing 3 2004
* 2005/0135,497 Adaptive transmitting and receiving device and method in wireless communication system using frequency division duplexing 14 2004
 
CAMBIUM NETWORKS LIMITED (1)
* 2006/0160,495 Dual payload and adaptive modulation 12 2006
 
QUALCOMM INCORPORATED (205)
* 6,771,706 Method and apparatus for utilizing channel state information in a wireless communication system 187 2001
* 6,785,341 Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information 240 2001
* 2003/0035,491 Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information 103 2001
9,130,810 OFDM communications methods and apparatus 0 2001
* 2003/0125,040 Multiple-access multiple-input multiple-output (MIMO) communication system 382 2001
* 6,760,388 Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems 142 2001
* 2003/0108,117 Time-domain transmit and receive processing with channel eigen-mode decompositon for MIMO systems 34 2001
* 7,197,084 Precoding for a multipath channel in a MIMO system 69 2002
7,184,713 Rate control for multi-channel communication systems 88 2002
8,194,770 Coded MIMO systems with selective channel inversion applied per eigenmode 7 2002
* 6,940,917 Beam-steering and beam-forming for wideband MIMO/MISO systems 98 2002
* 2004/0042,439 Beam-steering and beam-forming for wideband MIMO/MISO systems 21 2002
* 7,720,093 Modulation multiplexing 0 2002
* 7,095,790 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 4 2003
* 2004/0165,676 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 10 2003
8,218,609 Closed-loop rate control for a multi-channel communication system 11 2003
7,986,742 Pilots for MIMO communication system 31 2003
* 7,388,845 Multiple access wireless communications system using a multisector configuration 29 2003
* 7,133,354 Synchronization techniques for a wireless system 13 2003
6,985,498 Beacon signaling in a wireless system 62 2003
* 2004/0095,904 Synchronization techniques for a wireless system 27 2003
* 2004/0095,902 Beacon signaling in a wireless system 38 2003
7,366,200 Beacon signaling in a wireless system 32 2003
* 2004/0109,432 Beacon signaling in a wireless system 25 2003
* 7,305,055 Search-efficient MIMO trellis decoder 3 2003
* 7,418,042 Repetition coding for a wireless system 12 2003
* 2005/0243,774 Repetition coding for a wireless system 10 2003
8,320,301 MIMO WLAN system 20 2003
8,208,364 MIMO system with multiple spatial multiplexing modes 18 2003
8,169,944 Random access for wireless multiple-access communication systems 11 2003
8,170,513 Data detection and demodulation for wireless communication systems 16 2003
8,134,976 Channel calibration for a time division duplexed communication system 15 2003
* 7,248,879 Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system 27 2003
* 2004/0121,730 Transmission scheme for multi-carrier MIMO systems 23 2003
* 2005/0180,312 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system 44 2004
7,590,182 Method and apparatus for utilizing channel state information in a wireless communication system 3 2004
* 2004/0165,558 Method and apparatus for utilizing channel state information in a wireless communication system 24 2004
* 7,724,838 Hierarchical coding with multiple antennas in a wireless communication system 27 2004
* 2005/0068,918 Hierarchical coding with multiple antennas in a wireless communication system 138 2004
8,169,889 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system 14 2004
* 2005/0195,733 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system 77 2004
7,116,725 Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems 8 2004
* 2004/0234,004 Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems 5 2004
7,978,649 Unified MIMO transmission and reception 10 2004
7,054,378 Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information 37 2004
7,411,929 Method and apparatus for utilizing channel state information in a wireless communication system 3 2004
7,616,698 Multiple-input multiple output system and method 22 2004
8,204,149 Spatial spreading in a multi-antenna communication system 5 2004
9,148,256 Performance based rank prediction for MIMO design 0 2004
9,137,822 Efficient signaling over access channel 0 2004
8,831,115 MC-CDMA multiplexing in an orthogonal uplink 0 2004
8,611,283 Method and apparatus of using a single channel to provide acknowledgement and assignment messages 1 2004
8,238,923 Method of using shared resources in a communication system 5 2004
7,978,778 Receiver structures for spatial spreading with space-time or space-frequency transmit diversity 7 2005
* 2006/0050,770 Receiver structures for spatial spreading with space-time or space-frequency transmit diversity 82 2005
8,570,988 Channel calibration for a time division duplexed communication system 12 2005
8,923,785 Continuous beamforming for a MIMO-OFDM system 0 2005
* 7,466,667 Adaptive packet detection for detecting packets in a wireless medium 7 2005
* 2005/0190,786 Adaptive packet detection for detecting packets in a wireless medium 3 2005
8,285,226 Steering diversity for an OFDM-based multi-antenna communication system 6 2005
9,143,305 Pilot signal transmission for an orthogonal frequency division wireless communication system 0 2005
* 8,446,892 Channel structures for a quasi-orthogonal multiple-access communication system 21 2005
8,085,875 Incremental pilot insertion for channnel and interference estimation 15 2005
* 2006/0013,338 Incremental pilot insertion for channnel and interference estimation 15 2005
7,751,492 Multiplexing of real time services and non-real time services for OFDM systems 5 2005
* 7,167,684 Rate control for multi-channel communications systems 24 2005
* 7,194,040 Beam-steering and beam-forming for wideband MIMO/MISO systems 4 2005
* 2006/0104,381 Beam-steering and beam-forming for wideband MIMO/MISO systems 47 2005
7,623,442 Signaling method in an OFDM multiple access system 31 2005
8,358,714 Coding and modulation for multiple data streams in a communication system 14 2005
9,036,538 Frequency hopping design for single carrier FDMA systems 0 2005
7,894,548 Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system 9 2005
* 2006/0067,421 Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system 93 2005
9,154,211 Systems and methods for beamforming feedback in multi antenna communication systems 0 2005
8,934,329 Transmit diversity processing for a multi-antenna communication system 1 2005
9,225,416 Varied signaling channels for a reverse link in a wireless communication system 0 2005
9,225,488 Shared signaling channel 0 2005
9,209,956 Segment sensitive scheduling 0 2005
9,210,651 Method and apparatus for bootstraping information in a communication system 0 2005
9,184,870 Systems and methods for control channel signaling 0 2005
9,179,319 Adaptive sectorization in cellular systems 0 2005
9,172,453 Method and apparatus for pre-coding frequency division duplexing system 0 2005
8,693,405 SDMA resource management 3 2005
8,644,292 Varied transmission time intervals for wireless communication system 1 2005
8,582,509 Scalable frequency band operation in wireless communication systems 8 2005
8,565,194 Puncturing signaling channel for a wireless communication system 6 2005
8,045,512 Scalable frequency band operation in wireless communication systems 24 2005
7,664,193 Multiplexing of real time services and non-real time services for OFDM systems 22 2005
7,813,441 Multiplexing of real time services and non-real time services for OFDM systems 17 2005
* 2006/0093,067 Multiplexing of real time services and non-real time services for OFDM systems 36 2005
7,715,845 Tone hopping methods and apparatus 6 2005
8,582,548 Frequency division multiple access schemes for wireless communication 8 2006
7,636,573 Multiple-access multiple-input multiple-output (MIMO) communication system 72 2006
9,144,060 Resource allocation for shared signaling channels 0 2006
8,879,511 Assignment acknowledgement for a wireless communication system 3 2006
8,611,284 Use of supplemental assignments to decrement resources 0 2006
9,136,974 Precoding and SDMA support 0 2006
8,724,555 Uplink pilot and signaling transmission in wireless communication systems 1 2006
8,885,628 Code division multiplexing in a single-carrier frequency division multiple access system 9 2006
8,462,859 Sphere decoding apparatus 31 2006
8,599,945 Robust rank prediction for a MIMO system 3 2006
* 8,005,171 Systems and method for generating a common preamble for use in a wireless communication system 1 2006
* 8,543,070 Reduced complexity beam-steered MIMO OFDM system 0 2006
* 2007/0249,296 Reduced complexity beam-steered MIMO OFDM system 49 2006
8,351,405 Method and apparatus for signaling beacons in a communication system 0 2006
* 2008/0013,479 Method and apparatus for signaling beacons in a communication system 4 2006
7,606,326 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 0 2006
7,430,245 Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems 5 2006
* 2006/0274,849 Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems 6 2006
* 2006/0269,009 Transmission schemes for multi-antenna communication systems utilizing multi-carrier modulation 4 2006
9,088,384 Pilot symbol transmission in wireless communication systems 0 2006
7,991,065 Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system 8 2006
* 8,320,352 Robust transmission scheme for wireless networks 2 2007
8,059,609 Resource allocation to support single-user and multi-user MIMO transmission 3 2007
8,290,089 Derivation and feedback of transmit steering matrix 7 2007
7,907,972 Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system 27 2007
7,907,689 Broadcast transmission with spatial spreading in a multi-antenna communication system 7 2007
7,899,131 Broadcast transmission with spatial spreading in a multi-antenna communication system 6 2007
* 2008/0031,374 BROADCAST TRANSMISSION WITH SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM 20 2007
* 2008/0031,372 BROADCAST TRANSMISSION WITH SPATIAL SPREADING IN A MULTI-ANTENNA COMMUNICATION SYSTEM 19 2007
8,145,179 Data detection and demodulation for wireless communication systems 16 2007
* 2008/0063,099 SIGNALING METHOD IN AN OFDM MULTIPLE ACCESS SYSTEM 48 2007
7,668,267 Search efficient MIMO trellis decoder 0 2007
* 2008/0063,104 SEARCH EFFICIENT MIMO TRELLIS DECODER 7 2007
8,477,684 Acknowledgement of control messages in a wireless communication system 23 2007
8,203,978 Multi-mode terminal in a wireless MIMO system 17 2007
7,764,754 Data transmission with spatial spreading in a MIMO communication system 7 2007
* 8,369,356 Dynamic management of receiver resources 0 2008
* 2008/0232,400 DYNAMIC MANAGEMENT OF RECEIVER RESOURCES 2 2008
* 2008/0225,792 MULTIPLEXING OF FEEDBACK CHANNELS IN A WIRELESS COMMUNICATION SYSTEM 13 2008
8,619,698 Enhanced beacon signaling method and apparatus 0 2008
* 2008/0192,690 ENHANCED BEACON SIGNALING METHOD AND APPARATUS 1 2008
9,240,871 MIMO WLAN system 0 2008
8,913,529 MIMO WLAN system 1 2008
8,483,188 MIMO system with multiple spatial multiplexing modes 13 2008
8,355,313 MIMO system with multiple spatial multiplexing modes 8 2008
7,995,527 Multiple access wireless communications system using a multi-sector configuration 9 2008
8,014,271 Signaling method in an OFDM multiple access system 26 2008
8,462,643 MIMO WLAN system 33 2008
* 2008/0273,617 STEERING DIVERSITY FOR AN OFDM-BASED MULTI-ANTENNA COMMUNICATION SYSTEM 17 2008
8,199,842 Time-domain transmit and receive processing with channel EIGEN-mode decomposition for MIMO systems 0 2008
* 2008/0317,158 TIME-DOMAIN TRANSMIT AND RECEIVE PROCESSING WITH CHANNEL EIGEN-MODE DECOMPOSITION FOR MIMO SYSTEMS 10 2008
8,855,226 Rate selection with margin sharing 4 2008
9,240,877 Segment sensitive scheduling 0 2009
8,787,347 Varied transmission time intervals for wireless communication system 0 2009
8,098,568 Signaling method in an OFDM multiple access system 47 2009
8,098,569 Signaling method in an OFDM multiple access system 37 2009
8,457,232 Detecting the number of transmit antennas in wireless communication systems 1 2009
* 2009/0238,299 Detecting the Number of Transmit Antennas in Wireless Communication Systems 6 2009
8,873,365 Transmit diversity processing for a multi-antenna communication system 2 2009
8,909,174 Continuous beamforming for a MIMO-OFDM system 0 2009
* 2009/0290,657 Continuous Beamforming for a MIMO-OFDM System 11 2009
8,767,701 Unified MIMO transmission and reception 0 2009
* 2010/0074,301 UNIFIED MIMO TRANSMISSION AND RECEPTION 36 2009
8,743,837 Modified preamble structure for IEEE 802.11A extensions to allow for coexistence and interoperability between 802.11A devices and higher data rate, MIMO or otherwise extended devices 0 2009
7,949,060 Method and apparatus for utilizing channel state information in a wireless communication system 16 2009
* 2010/0003,931 TRANSMISSION SCHEMES FOR MULTI-ANTENNA COMMUNICATION SYSTEMS UTILIZING MULTI-CARRIER MODULATION 2 2009
8,073,072 Multiple-input multiple-output system and method 3 2009
9,031,097 MIMO system with multiple spatial multiplexing modes 0 2009
8,194,776 Multiplexing of real time services and non-real time services for OFDM systems 2 2010
7,990,843 Signaling method in an OFDM multiple access system 43 2010
7,990,844 Signaling method in an OFDM multiple access system 42 2010
7,924,699 Signaling method in an OFDM multiple access system 43 2010
7,916,624 Signaling method in an OFDM multiple access system 43 2010
8,542,765 Hierarchical coding with multiple antennas in a wireless communication system 1 2010
8,547,951 Channel structures for a quasi-orthogonal multiple-access communication system 0 2010
8,325,844 Data transmission with spatial spreading in a MIMO communication system 30 2010
* 2011/0142,097 DATA TRANSMISSION WITH SPATIAL SPREADING IN A MIMO COMMUNICATION SYSTEM 21 2010
8,644,214 Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot 0 2010
8,903,440 Distributed hierarchical scheduling in an ad hoc network 0 2010
8,817,897 MC-CDMA multiplexing in an orthogonal uplink 0 2010
8,681,764 Frequency division multiple access schemes for wireless communication 0 2010
8,489,107 Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system 0 2011
8,611,457 Modified preamble structure for IEEE 802.11A extensions to allow for coexistence and interoperability between 802.11A devices and higher data rate, MIMO or otherwise extended devices 0 2011
8,649,451 MC-CDMA multiplexing in an orthogonal uplink 1 2011
8,295,154 Signaling method in an OFDM multiple access system 19 2011
8,223,627 Signaling method in an OFDM multiple access system 26 2011
8,218,425 Signaling method in an OFDM multiple access system 25 2011
8,199,634 Signaling method in an OFDM multiple access system 25 2011
8,842,619 Scalable frequency band operation in wireless communication systems 0 2011
8,913,479 Flexible time-frequency multiplexing structure for wireless communication 0 2011
8,599,953 Multiple-input multiple-output system and method 0 2011
8,917,654 Frequency hopping design for single carrier FDMA systems 0 2011
8,638,870 MC-CDMA multiplexing in an orthogonal uplink 1 2011
8,711,763 Random access for wireless multiple-access communication systems 2 2012
8,923,421 Repetition coding for a wireless system 0 2012
* 8,320,354 Robust transmission scheme for wireless networks 2 2012
* 2012/0127,985 ROBUST TRANSMISSION SCHEME FOR WIRELESS NETWORKS 2 2012
8,750,151 Channel calibration for a time division duplexed communication system 3 2012
9,198,194 Scheduling with reverse direction grant in wireless communication systems 0 2012
8,520,498 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system 3 2012
8,903,016 Spatial spreading in a multi-antenna communication system 0 2012
9,072,101 High speed media access control and direct link protocol 0 2012
8,774,098 Method, apparatus, and system for multiplexing protocol data units 1 2012
9,226,308 Method, apparatus, and system for medium access control 0 2012
8,989,294 Multiple-input multiple-output system and method 1 2013
8,824,583 Reduced complexity beam-steered MIMO OFDM system 0 2013
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
9,137,087 High speed media access control 0 2013
9,125,078 Method and apparatus for setting reverse link CQI reporting modes in wireless communication system 0 2013
8,971,823 Precoding for segment sensitive scheduling in wireless communication systems 0 2013
9,155,106 Uplink pilot and signaling transmission in wireless communication systems 0 2014
9,013,974 MIMO WLAN system 2 2014
9,197,374 Repetition coding for a wireless system 0 2014
 
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7,948,960 Radio transmission device 5 2005
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8,422,478 Radio transmission device 0 2010
8,416,757 Radio transmission device 0 2011
 
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6,947,748 OFDMA with adaptive subcarrier-cluster configuration and selective loading 112 2000
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7,146,172 Multi-carrier communications with adaptive cluster configuration and switching 74 2001
6,904,283 Multi-carrier communications with group-based subcarrier allocation 173 2001
* 2003/0169,681 Multi-carrier communications with group-based subcarrier allocation 77 2001
* 2002/0147,017 Multi-carrier communications with adaptive cluster configuration and switching 66 2001
7,355,962 Multi-carrier communications with group-based subcarrier allocation 25 2005
* 2005/0220,002 Multi-carrier communications with group-based subcarrier allocation 29 2005
* 7,454,212 OFDMA with adaptive subcarrier-cluster configuration and selective loading 22 2005
* 2006/0083,210 OFDMA with adaptive subcarrier-cluster configuration and selective loading 26 2005
7,379,742 Multi-carrier communications with adaptive cluster configuration and switching 25 2006
7,573,850 Multi-carrier communications with group-based subcarrier allocation 22 2007
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* 8,165,246 Training sequence for low latency LMS implementation 0 2000
* 8,634,481 Feedback technique for wireless systems with multiple transmit and receive antennas 1 2000
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* 7,116,722 Wireless communication system using multi-element antenna having a space-time architecture 13 2001
 
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6,996,380 Communication system employing transmit macro-diversity 34 2001
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* 2009/0279,627 OFDM COMMUNICATION APPARATUS 0 2009
 
XIEON NETWORKS S.A.R.L. (1)
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8,131,218 Methods and apparatus for wirelessly communicating signals that include embedded synchronization/pilot sequences 4 2008
* 2009/0011,722 METHODS AND APPARATUS FOR WIRELESSLY COMMUNICATING SIGNALS THAT INCLUDE EMBEDDED SYNCHRONIZATION/PILOT SEQUENCES 15 2008
8,358,644 Methods and apparatus for generating synchronization/pilot sequences for embedding in wireless signals 1 2008
* 2009/0003,308 METHODS AND APPARATUS FOR GENERATING SYNCHRONIZATION/PILOT SEQUENCES FOR EMBEDDING IN WIRELESS SIGNALS 35 2008
8,098,713 Methods and apparatus for generating and communicating wireless signals having pilot signals with variable pilot signal parameters 17 2008
8,744,009 Reducing transmitter-to-receiver non-linear distortion at a transmitter prior to estimating and cancelling known non-linear distortion at a receiver 2 2009
8,355,466 Cancelling non-linear power amplifier induced distortion from a received signal by moving incorrectly estimated constellation points 14 2009
* 2011/0074,506 CANCELLING NON-LINEAR POWER AMPLIFIER INDUCED DISTORTION FROM A RECEIVED SIGNAL BY MOVING INCORRECTLY ESTIMATED CONSTELLATION POINTS 45 2009
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8,331,420 Methods and apparatus for multiple-antenna communication of wireless signals with embedded pilot signals 0 2009
8,379,752 Methods and apparatus for multiple-antenna communication of wireless signals with embedded synchronization/pilot sequences 3 2010
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (2)
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* Cited By Examiner