US Patent No: 5,652,764

Number of patents in Portfolio can not be more than 2000

Radio communication system

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Abstract

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Transmission data is spread by spreaders through two orthogonal codes generated by orthogonal code generators, the spread signals are subjected to binary phase modulation with a given carrier wave by BPSK modulators, and are then transmitted from separate antennas positioned in differing spatial locations. Thus, it is possible to provide a radio communication system capable of realizing transmission diversity even in the case of initial transmission where there is yet no information regarding the location, direction, etc., of a partner station, or where a base station is to transmit data directed to all of a plurality of mobile stations, such as in mobile communication systems.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
KABUSHIKI KAISHA TOSHIBATOKYO25925

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kanzaki, Kiyoko Kamakura, JP 2 132
Takahashi, Hidehiro Yokohama, JP 8 128

Cited Art Landscape

Patent Info (Count) # Cites Year
 
AKAMAI TECHNOLOGIES, INC. (1)
* 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 69 2009
 
Nippon Electric Co., Ltd. (1)
* 4,490,830 Radio signal transmission system including a plurality of transmitters for transmitting a common signal 36 1982
 
AT&T IPM CORP. (1)
* 5,457,712 Method for providing time diversity 45 1994
 
AT&T Bell Laboratories (2)
* 5,305,353 Method and apparatus for providing time diversity 120 1992
* 5,289,499 Diversity for direct-sequence spread spectrum systems 63 1992
 
MATSUSHITA ELECTRIC WORKS, LTD. (1)
* 5,280,631 Polarization diversity system suitable for radio communication in indoor space 17 1992
 
AT&T CORP. (1)
* 5,394,435 Diversity for direct-sequence spread spectrum systems 76 1994
 
Canon Kabushiki Kaisha (1)
* 5,203,018 Space diversity system switching transmission 51 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
MOTOROLA MOBILITY LLC (1)
* 2009/0323,783 CALIBRATION TECHNIQUES FOR MIMO WIRELESS COMMUNICATION SYSTEMS 11 2008
 
Other [Check patent profile for assignment information] (2)
* 2005/0180,492 Method for subtracting multiple rays of multiple interfering received signals 5 2005
* 2008/0200,990 Tissue sparing implant 11 2007
 
NOKIA SOLUTIONS AND NETWORKS GMBH & CO. KG (2)
* 7,039,368 Method for controlling the formation of a downlink beam 1 2001
* 2004/0082,299 Method for controlling the formation of a downlink beam 2 2002
 
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD. (3)
* 6,522,639 Transmission/reception apparatus and transmit power control method 49 1999
* 6,545,991 Diversity method 3 2000
* 6,507,574 Transmission/reception apparatus and transmit power control method 21 2000
 
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. (1)
* 7,173,979 Method and device for transmitting information symbols using a plurality of carriers and method and device for receiving information symbols 17 1999
 
SAMSUNG ELECTRONICS CO., LTD. (3)
6,963,601 Apparatus and method for spreading channel data in CDMA communication system using orthogonal transmit diversity 1 2000
6,904,030 Pilot channel power measurement means for a mobile station in asynchronous CDMA communication system 20 2001
* 2003/0002,454 Pilot channel power measurement means for a mobile station in asynchronous CDMA communication system 3 2001
 
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA (3)
* 6,252,864 CDMA communication apparatus and CDMA communication method 28 1998
6,519,238 Transmission apparatus and base station apparatus using the same 4 1999
RE41819 Transmission apparatus and base station apparatus using the same 0 2007
 
HITACHI, LTD. (3)
* 5,930,244 CDMA Communication system and method 26 1997
7,916,699 CDMA communication system and method 0 2009
* 2009/0245,210 CDMA COMMUNICATION SYSTEM AND METHOD 1 2009
 
InterDigital Technology Corporation (35)
* 6,115,406 Transmission using an antenna array in a CDMA communication system 65 1999
6,373,877 User equipment for use in a CDMA communication system using an antenna array 11 2000
6,278,726 Interference cancellation in a spread spectrum communication system 83 2000
6,574,271 Spread spectrum receiver for receiving a data signal using an adaptive algorithm 33 2001
* 2002/0110,108 Simple block space time transmit diversity using multiple spreading codes 4 2001
* 6,983,008 Base station for use in a CDMA communication system using an antenna array 4 2002
6,574,265 CDMA communication system using an antenna array 0 2002
6,560,300 CDMA communication system using an antenna array 11 2002
* 2002/0094,016 Base station for use in a CDMA communication system using an antenna array 1 2002
* 2002/0093,927 Simple block space time transmit diversity using multiple spreading codes 2 2002
* 2002/0089,953 Simple block space time transmit diversity using multiple spreading codes 5 2002
* 2002/0089,955 Simple block space time transmit diversity using multiple spreading codes 2 2002
* 2002/0075,832 Simple block space time transmit diversity using multiple spreading codes 6 2002
* 2002/0080,746 Simple block space time transmit diversity using multiple spreading codes 2 2002
* 2002/0097,699 Transmit diversity using multiple spreading codes 2 2002
6,782,040 Interference cancellation in a spread spectrum communication system 4 2003
6,985,515 Interference cancellation in a spread spectrum communication system 1 2004
* 2005/0025,224 Interference cancellation in a spread spectrum communication system 0 2004
7,746,830 System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system 1 2005
7,545,846 Interference cancellation in a spread spectrum communication system 0 2005
7,813,413 Antenna array communication using spreading codes 0 2005
* 2006/0098,720 Antenna array communication using spreading codes 0 2005
7,684,469 Code division multiple access transmission antenna weighting 0 2006
* 2007/0091,985 CODE DIVISION MULTIPLE ACCESS TRANSMISSION ANTENNA WEIGHTING 3 2006
* 7,613,226 Method and apparatus for transferring signals in a wireless communication system 0 2008
* 2008/0285,629 METHOD AND APPARATUS FOR TRANSFERRING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM 0 2008
7,953,139 Interference cancellation in a spread spectrum communication system 1 2009
* 8,005,129 Acquisition circuit for low chip rate option for mobile telecommunication system 0 2009
8,073,067 Method and apparatus for transferring signals in a wireless communication system 0 2009
8,311,492 Simple block space time transmit diversity using multiple spreading codes 1 2009
9,219,522 Code division multiple access transmission antenna weighting 0 2010
* 2011/0026,496 CODE DIVISION MULTIPLE ACCESS TRANSMISSION ANTENNA WEIGHTING 0 2010
9,036,680 Interference cancellation in a spread spectrum communication system 0 2011
* 2011/0228,710 INTERFERENCE CANCELLATION IN A SPREAD SPECTRUM COMMUNICATION SYSTEM 1 2011
9,270,327 Interference cancellation in a spread spectrum communication system 0 2015
 
NEC CORPORATION (1)
* 6,415,161 Mobile communication system with transmitting systems with different outputting power 10 1999
 
GOOGLE TECHNOLOGY HOLDINGS LLC (4)
* 6,570,938 Method and apparatus for recovering data symbols from a signal received by a radio communication device 1 1996
* 6,141,542 Method and apparatus for controlling transmit diversity in a communication system 74 1997
* 6,173,005 Apparatus and method for transmitting signals in a communication system 118 1997
* 6,317,411 Method and system for transmitting and receiving signals transmitted from an antenna array with transmit diversity techniques 126 1999
 
APPLE INC. (1)
7,280,466 Transmitter for a wireless communications system using multiple codes and multiple antennas 5 2002
 
UNWIRED PLANET, LLC (1)
* 6,925,127 Method and apparatus for subtracting multiple rays of multiple interfering received signals 6 2000
 
Linex Technologies, Inc. (2)
RE42219 Multiple-input multiple-output (MIMO) spread spectrum system and method 2 2008
RE43812 Multiple-input multiple-output (MIMO) spread-spectrum system and method 1 2011
 
UNIDEN CORPORATION (1)
* 5,859,875 Transmitter, receiver, communication system, and communication method employing spread spectrum communication technique 63 1997
 
NAVINI NETWORKS, INC. UNDER THE NAME OF CISCO-NAVINI NETWORKS, INC. (2)
* 8,412,125 Wireless communication system with transmit diversity designs 0 2007
* 2008/0090,529 Wireless communication system with transmit diversity designs 1 2007
 
LENOVO INNOVATIONS LIMITED (HONG KONG) (3)
* 6,404,757 Reception method and apparatus in CDMA system 4 1998
7,145,941 Reduction in power consumption in CDMA receiver terminal when signal is received in transmission diversity mode 0 2001
* 2002/0071,410 Reduction in power consumption in CDMA receiver terminal when signal is received in transmission diversity mode 0 2001
 
QUALCOMM INCORPORATED (5)
* 6,134,215 Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel 37 1996
* 6,795,508 Method and apparatus for obtaining transmit diversity using switched antennas 8 1998
7,881,360 Method and system for increased bandwidth efficiency in multiple input—multiple output channels 0 2004
* 2004/0179,626 Method and system for increased bandwidth efficiency in multiple input -multiple output channels 7 2004
* 7,031,398 Method and apparatus for obtaining transmit diversity using switched antennas 1 2004
 
PENDRAGON WIRELESS LLC (1)
6,937,645 Communication system and a receiver for use in the system 1 2001
 
LUCENT TECHNOLOGIES INC. (3)
* 6,370,129 High-speed data services using multiple transmit antennas 55 2000
6,870,825 Pilot signal transmission in a multi-transmit antenna wireless communication system 8 2000
* 7,400,614 Methods and apparatus for downlink diversity in CDMA using Walsh codes 4 2002
 
CISCO TECHNOLOGY, INC. (1)
* 7,577,188 Physical layer and MAC enhancements using complex sequences on a wireless channel 4 2001
 
YOZAN INC. (1)
* 2003/0133,493 Path search method and path search device, and mobile terminal 6 2002
 
ALCATEL LUCENT (2)
* 8,155,170 Method and apparatus for achieving channel variability in spread spectrum communication systems 0 2007
* 2008/0260,007 Method and Apparatus for Achieving Channel Variability in Spread Spectrum Communication Systems 0 2007
 
MASCOTECH, INC. (1)
* 6,038,263 Method and apparatus for transmitting signals in a communication system 128 1997
 
ERICSSON INC. (1)
* 6,215,762 Communication system and method with orthogonal block encoding 32 1997
 
FUJITSU LIMITED (1)
* 2009/0303,868 Control Channel Transmission Method And Radio Communication Apparatus 5 2009
 
INVENTERGY, INC. (1)
7,145,886 Communication terminal, base station system, and method of controlling transmission power 4 2000
 
HITACHI DENSHI KABUSHIKI KAISHA (4)
* 6,137,786 CDMA communication system and method 10 1999
6,597,676 CDMA communication system and method 7 2000
7,545,777 CDMA communication system and method 0 2003
* 2003/0214,932 CDMA communication system and method 8 2003
 
INTEL CORPORATION (25)
* 7,079,523 Maintenance link using active/standby request channels 41 2001
8,175,120 Minimal maintenance link to support synchronization 2 2001
* 7,961,589 System and related methods for introducing sub-carrier diversity in a wideband communication system 0 2001
* 2003/0064,690 System and related methods for introducing sub-carrier diversity in a wideband communication system 9 2001
* 2003/0082,924 Method of making a semiconductor device by converting a hydrophobic surface of a dielectric layer to a hydrophilic surface 0 2001
7,936,728 System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system 0 2001
8,155,096 Antenna control system and method 3 2001
7,551,663 Use of correlation combination to achieve channel detection 3 2002
7,773,566 System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system 0 2004
8,134,980 Transmittal of heartbeat signal at a lower level than heartbeat request 5 2007
9,042,400 Multi-detection of heartbeat to reduce error probability 0 2008
8,274,954 Alternate channel for carrying selected message types 0 2009
8,139,546 System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system 0 2010
8,638,877 Methods, apparatuses and systems for selective transmission of traffic data using orthogonal sequences 0 2011
8,509,268 Minimal maintenance link to support sychronization 1 2011
8,792,458 System and method for maintaining wireless channels over a reverse link of a CDMA wireless communication system 0 2012
8,437,330 Antenna control system and method 0 2012
8,908,654 Dynamic bandwidth allocation for multiple access communications using buffer urgency factor 0 2012
8,687,606 Alternate channel for carrying selected message types 1 2012
9,014,118 Signaling for wireless communications 1 2013
9,225,395 Antenna control system and method 0 2013
9,408,216 Dynamic bandwidth allocation to transmit a wireless protocol across a code division multiple access (CDMA) radio link 0 2013
9,301,274 Minimal maintenance link to support synchronization 0 2013
9,247,510 Use of correlation combination to achieve channel detection 0 2013
9,307,532 Signaling for wireless communications 0 2015
 
RPX CORPORATION (1)
* 6,256,290 Multi-carrier CDMA transmission system with frequency and transmit diversity 29 1998
 
STMICROELECTRONICS S.R.L. (3)
* 7,460,581 Method for transmitting signals using antenna diversity, for instance in mobile communication systems, transmitter, receiver and computer program product therefor 3 2004
* 2005/0271,121 Method for transmitting signals using antenna diversity, for instance in mobile communication systems, transmitter, receiver and computer program product therefor 0 2004
7,586,979 Method for transmitting signals using antenna diversity, for instance in mobile communication systems, transmitter, receiver and computer program product therefor 1 2008
 
ALCATEL (2)
6,636,495 Diversity transmission in a mobile radio system 75 1999
6,469,981 Point-to-multipoint network 5 1999
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 8,027,649 Radio communication system, a transmitter and a receiver 0 2007
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (3)
* 6,226,508 Transmission diversity apparatus 21 1998
6,891,817 Transmission apparatus and base station apparatus using the same 9 2002
* 2004/0161,058 Receiving apparatus and receiving method 3 2003
 
AT&T CORP. (1)
* 6,661,856 Decoding for generalized orthogonal design for space-time codes for wireless communication 21 2000
* Cited By Examiner