WO2007137280A3 - Derivation and feedback of a transmit steering matrix - Google Patents

Derivation and feedback of a transmit steering matrix Download PDF

Info

Publication number
WO2007137280A3
WO2007137280A3 PCT/US2007/069498 US2007069498W WO2007137280A3 WO 2007137280 A3 WO2007137280 A3 WO 2007137280A3 US 2007069498 W US2007069498 W US 2007069498W WO 2007137280 A3 WO2007137280 A3 WO 2007137280A3
Authority
WO
WIPO (PCT)
Prior art keywords
transmit steering
steering matrix
matrix
receiver
transmitter
Prior art date
Application number
PCT/US2007/069498
Other languages
French (fr)
Other versions
WO2007137280A2 (en
Inventor
Steven J Howard
John W Ketchum
Mark S Wallace
Rodney J Walton
Original Assignee
Qualcomm Inc
Steven J Howard
John W Ketchum
Mark S Wallace
Rodney J Walton
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc, Steven J Howard, John W Ketchum, Mark S Wallace, Rodney J Walton filed Critical Qualcomm Inc
Priority to CN200780018821.6A priority Critical patent/CN101449504B/en
Priority to JP2009512274A priority patent/JP5096463B2/en
Priority to KR1020087030719A priority patent/KR101162811B1/en
Priority to BRPI0711887-2A priority patent/BRPI0711887A2/en
Priority to EP07797662.9A priority patent/EP2020112B1/en
Priority to CA2650430A priority patent/CA2650430C/en
Publication of WO2007137280A2 publication Critical patent/WO2007137280A2/en
Publication of WO2007137280A3 publication Critical patent/WO2007137280A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0658—Feedback reduction
    • H04B7/066—Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0675—Space-time coding characterised by the signaling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)

Abstract

Techniques for efficiently deriving a transmit steering matrix and sending feedback for this matrix are described. A receiver determines a set of parameters defining a transmit steering matrix to be used for transmission from a transmitter to the receiver. The receiver may derive the transmit steering matrix based on a set of transformation matrices, which may be used for multiple iterations of Jacobi rotation to zero out off-diagonal elements of a channel matrix. The receiver may then determine the set of parameters based on the transformation matrices. The set of parameters may comprise at least one angle, at least one value, at least one index, etc., for each transformation matrix. The receiver sends the set of parameters defining the transmit steering matrix (instead of elements of the transmit steering matrix) to the transmitter for use by the transmitter to derive the transmit steering matrix.
PCT/US2007/069498 2006-05-22 2007-05-22 Derivation and feedback of a transmit steering matrix WO2007137280A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN200780018821.6A CN101449504B (en) 2006-05-22 2007-05-22 Derivation and feedback of transmit steering matrix
JP2009512274A JP5096463B2 (en) 2006-05-22 2007-05-22 Derivation and feedback of transmit steering matrix
KR1020087030719A KR101162811B1 (en) 2006-05-22 2007-05-22 Derivation and feedback of a transmit steering matrix
BRPI0711887-2A BRPI0711887A2 (en) 2006-05-22 2007-05-22 transmission steering matrix derivation and feedback
EP07797662.9A EP2020112B1 (en) 2006-05-22 2007-05-22 Derivation and feedback of a transmit steering matrix
CA2650430A CA2650430C (en) 2006-05-22 2007-05-22 Derivation and feedback of a transmit steering matrix

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80268206P 2006-05-22 2006-05-22
US60/802,682 2006-05-22

Publications (2)

Publication Number Publication Date
WO2007137280A2 WO2007137280A2 (en) 2007-11-29
WO2007137280A3 true WO2007137280A3 (en) 2008-04-17

Family

ID=38724100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/069498 WO2007137280A2 (en) 2006-05-22 2007-05-22 Derivation and feedback of a transmit steering matrix

Country Status (9)

Country Link
US (1) US8290089B2 (en)
EP (1) EP2020112B1 (en)
JP (1) JP5096463B2 (en)
KR (1) KR101162811B1 (en)
CN (1) CN101449504B (en)
BR (1) BRPI0711887A2 (en)
CA (1) CA2650430C (en)
RU (1) RU2425448C2 (en)
WO (1) WO2007137280A2 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8204149B2 (en) 2003-12-17 2012-06-19 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system
US7336746B2 (en) 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
US8169889B2 (en) 2004-02-18 2012-05-01 Qualcomm Incorporated Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
US8923785B2 (en) 2004-05-07 2014-12-30 Qualcomm Incorporated Continuous beamforming for a MIMO-OFDM system
US7978649B2 (en) * 2004-07-15 2011-07-12 Qualcomm, Incorporated Unified MIMO transmission and reception
US8543070B2 (en) * 2006-04-24 2013-09-24 Qualcomm Incorporated Reduced complexity beam-steered MIMO OFDM system
US8233556B2 (en) * 2006-07-19 2012-07-31 Texas Instruments Incorporated Reduced feedback transmit beamforming
US7970355B2 (en) * 2007-12-04 2011-06-28 Designart Networks Ltd Method and device for wireless communication using MIMO techniques
US8447236B2 (en) * 2008-05-15 2013-05-21 Qualcomm Incorporated Spatial interference mitigation schemes for wireless communication
US8081700B2 (en) * 2008-06-06 2011-12-20 Redpine Signals, Inc. Power allocation method for MIMO transmit beamforming
AU2009295275A1 (en) * 2008-09-18 2010-03-25 Commonwealth Scientific And Industrial Research Organisation Vector quantization in wireless communication
US20100119017A1 (en) * 2008-11-10 2010-05-13 Joonsuk Kim Method and system for a 4x2 sfbc/stbc system with 2 spatial streams using angle feedback
US8830918B2 (en) 2009-03-16 2014-09-09 Interdigital Patent Holdings, Inc. Method and apparatus for performing uplink transmit diversity
US9667378B2 (en) * 2009-10-01 2017-05-30 Telefonaktiebolaget Lm Ericsson (Publ) Multi-granular feedback reporting and feedback processing for precoding in telecommunications
US8971178B1 (en) * 2010-04-05 2015-03-03 Marvell International Ltd. Calibration correction for implicit beamformer using an explicit beamforming technique in a wireless MIMO communication system
US9444577B1 (en) 2010-04-05 2016-09-13 Marvell International Ltd. Calibration correction for implicit beamformer using an explicit beamforming technique in a wireless MIMO communication system
CN101882952B (en) * 2010-06-24 2012-12-19 东南大学 Space division multiple address transmission method of statistical characteristic mode
WO2012021449A1 (en) * 2010-08-10 2012-02-16 Marvell World Trade Ltd. Sub-band feedback for beamforming on downlink multiple user mimo configurations
US8730989B2 (en) 2011-02-11 2014-05-20 Interdigital Patent Holdings, Inc. Method and apparatus for closed loop transmit diversity transmission initial access
KR20120126572A (en) * 2011-05-12 2012-11-21 한국전자통신연구원 Cognitive radio base station and communication method of the cognitive radio base station in a multi-user multiple-input multiple output cognitive radio network system
US9154969B1 (en) 2011-09-29 2015-10-06 Marvell International Ltd. Wireless device calibration for implicit transmit
US9088448B2 (en) * 2011-11-11 2015-07-21 Mediatek Singapore Pte. Ltd. Phased array device and calibration method therefor
JP5699913B2 (en) * 2011-11-21 2015-04-15 アイコム株式会社 COMMUNICATION DEVICE AND COMMUNICATION METHOD
US9112554B1 (en) * 2013-06-12 2015-08-18 Marvell International Ltd. Estimation of correlated MIMO channels
JP2017157955A (en) * 2016-02-29 2017-09-07 富士通株式会社 Communication device, communication method, and communication system
CN109661784B (en) * 2016-08-25 2022-02-25 云雀无线控股有限责任公司 Efficient channel estimation for implicit MU-MIMO
TWI618374B (en) * 2017-04-21 2018-03-11 國立臺灣大學 Methods of beam-indexed spatial modulation
WO2018216989A1 (en) * 2017-05-21 2018-11-29 엘지전자 주식회사 Method for transmitting feedback information in wireless communication system and apparatus therefor
CN107508774B (en) * 2017-08-21 2020-11-03 安徽师范大学 Millimeter wave MIMO channel estimation method combining channel representation and beam design
US20190097709A1 (en) * 2017-09-22 2019-03-28 Qualcomm Incorporated Coherent beamforming feedback
CN111628807A (en) * 2019-02-28 2020-09-04 英国电讯有限公司 Channel estimation in MIMO systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004054191A1 (en) * 2002-12-11 2004-06-24 Qualcomm Incorporated Derivation of eigenvectors for spatial processing in mimo communication systems
US20040190636A1 (en) * 2003-03-31 2004-09-30 Oprea Alexandru M. System and method for wireless communication systems
WO2005060144A1 (en) * 2003-12-17 2005-06-30 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system

Family Cites Families (168)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337376A (en) 1979-12-31 1982-06-29 Broadcom, Incorporated Communications system and network
IL100213A (en) 1990-12-07 1995-03-30 Qualcomm Inc CDMA microcellular telephone system and distributed antenna system therefor
DE4101629C3 (en) 1991-01-21 2003-06-26 Fuba Automotive Gmbh Antenna diversity system with at least two antennas for the mobile reception of meter and decimeter waves
IT1259032B (en) 1992-05-25 1996-03-11 Alcatel Italia METHOD FOR PROCESSING AND OPTIMIZING THE ANALOGUE FUNCTION IN A DIGITAL RADIO TRANSMISSION SYSTEM IN DIFFERENT SPACE AND / OR ANGLE
US5668837A (en) 1993-10-14 1997-09-16 Ericsson Inc. Dual-mode radio receiver for receiving narrowband and wideband signals
DE69521852T2 (en) 1994-02-10 2002-04-04 Nippon Telegraph & Telephone ADAPTIVE SPREAD SPECTRUM RECEIVER
US5604921A (en) 1995-07-07 1997-02-18 Nokia Mobile Phones Ltd. Radiotelephone user interface for broadcast short message service
US6134215A (en) 1996-04-02 2000-10-17 Qualcomm Incorpoated Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel
EP0931388B1 (en) 1996-08-29 2003-11-05 Cisco Technology, Inc. Spatio-temporal processing for communication
US6408016B1 (en) 1997-02-24 2002-06-18 At&T Wireless Services, Inc. Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US6584144B2 (en) 1997-02-24 2003-06-24 At&T Wireless Services, Inc. Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US6058105A (en) 1997-09-26 2000-05-02 Lucent Technologies Inc. Multiple antenna communication system and method thereof
US6061023A (en) * 1997-11-03 2000-05-09 Motorola, Inc. Method and apparatus for producing wide null antenna patterns
US6314147B1 (en) 1997-11-04 2001-11-06 The Board Of Trustees Of The Leland Stanford Junior University Two-stage CCI/ISI reduction with space-time processing in TDMA cellular networks
JP3718337B2 (en) 1998-01-08 2005-11-24 株式会社東芝 Adaptive variable directional antenna
US6618454B1 (en) 1998-02-06 2003-09-09 At&T Corp. Diversity coded OFDM for high data-rate communication
US6317466B1 (en) 1998-04-15 2001-11-13 Lucent Technologies Inc. Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver
US6198775B1 (en) 1998-04-28 2001-03-06 Ericsson Inc. Transmit diversity method, systems, and terminals using scramble coding
US6175743B1 (en) 1998-05-01 2001-01-16 Ericsson Inc. System and method for delivery of short message service messages to a restricted group of subscribers
KR100778647B1 (en) 1998-09-04 2007-11-22 에이티 앤드 티 코포레이션 Combined channel coding and space-block coding in a multi-antenna arrangement
EP1033004A1 (en) 1998-09-18 2000-09-06 Hughes Electronics Corporation Method and constructions for space-time codes for psk constellations for spatial diversity in multiple-element antenna systems
US6363121B1 (en) 1998-12-07 2002-03-26 Lucent Technologies Inc. Wireless transmission method for antenna arrays using unitary space-time signals
GB9828216D0 (en) 1998-12-21 1999-02-17 Northern Telecom Ltd A downlink beamforming approach for frequency division duplex cellular systems
EP1073214B1 (en) 1999-02-16 2008-12-17 Mitsubishi Denki Kabushiki Kaisha Radio communication system, transmitter and receiver
US6218985B1 (en) 1999-04-15 2001-04-17 The United States Of America As Represented By The Secretary Of The Navy Array synthesis method
CA2388024C (en) 1999-10-19 2008-04-15 Interdigital Technology Corporation Receiver for multiuser detection of cdma signals
US6788661B1 (en) 1999-11-12 2004-09-07 Nikia Networks Oy Adaptive beam-time coding method and apparatus
US6351499B1 (en) 1999-12-15 2002-02-26 Iospan Wireless, Inc. Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter
US6298035B1 (en) 1999-12-21 2001-10-02 Nokia Networks Oy Estimation of two propagation channels in OFDM
US6888809B1 (en) 2000-01-13 2005-05-03 Lucent Technologies Inc. Space-time processing for multiple-input, multiple-output, wireless systems
US6804307B1 (en) 2000-01-27 2004-10-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient transmit diversity using complex space-time block codes
US6816555B2 (en) 2000-02-18 2004-11-09 Sony Corporation Signal component demultiplexing apparatus, filter apparatus, receiving apparatus, communication apparatus, and communication method
US6473467B1 (en) 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system
US6493331B1 (en) 2000-03-30 2002-12-10 Qualcomm Incorporated Method and apparatus for controlling transmissions of a communications systems
US6542556B1 (en) 2000-03-31 2003-04-01 Nokia Mobile Phones Ltd. Space-time code for multiple antenna transmission
US7068628B2 (en) 2000-05-22 2006-06-27 At&T Corp. MIMO OFDM system
US20020009125A1 (en) 2000-06-12 2002-01-24 Shi Zhen Liang High bandwidth efficient spread spectrum modulation using chirp waveform
JP2001358692A (en) 2000-06-14 2001-12-26 Nec Corp Orthogonal frequency-division multiplex modulating and demodulating circuit
KR100493152B1 (en) 2000-07-21 2005-06-02 삼성전자주식회사 Transmission antenna diversity method, base station apparatus and mobile station apparatus therefor in mobile communication system
US6486828B1 (en) 2000-07-26 2002-11-26 Western Multiplex Adaptive array antenna nulling
US7065156B1 (en) 2000-08-31 2006-06-20 Nokia Mobile Phones Ltd. Hopped delay diversity for multiple antenna transmission
US6985434B2 (en) 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
US6694147B1 (en) 2000-09-15 2004-02-17 Flarion Technologies, Inc. Methods and apparatus for transmitting information between a basestation and multiple mobile stations
US6842487B1 (en) 2000-09-22 2005-01-11 Telefonaktiebolaget Lm Ericsson (Publ) Cyclic delay diversity for mitigating intersymbol interference in OFDM systems
US6956897B1 (en) 2000-09-27 2005-10-18 Northwestern University Reduced rank adaptive filter
US7110378B2 (en) 2000-10-03 2006-09-19 Wisconsin Alumni Research Foundation Channel aware optimal space-time signaling for wireless communication over wideband multipath channels
EP1195937A1 (en) 2000-10-03 2002-04-10 Telefonaktiebolaget Lm Ericsson Space-time coding with orthogonal transformations
EP2259480A3 (en) 2000-11-20 2012-05-02 Sony Deutschland Gmbh Adaptive subcarrier loading
EP1215507A3 (en) 2000-12-12 2002-08-28 Matsushita Electric Industrial Co., Ltd. Radio-wave arrival-direction estimating apparatus and directional variable transceiver
JP3576099B2 (en) 2000-12-22 2004-10-13 株式会社東芝 Receiver using smart antenna, receiving method using smart antenna, and beam forming circuit
US7050510B2 (en) 2000-12-29 2006-05-23 Lucent Technologies Inc. Open-loop diversity technique for systems employing four transmitter antennas
US6801790B2 (en) 2001-01-17 2004-10-05 Lucent Technologies Inc. Structure for multiple antenna configurations
GB0102316D0 (en) 2001-01-30 2001-03-14 Koninkl Philips Electronics Nv Radio communication system
EP1241824A1 (en) 2001-03-14 2002-09-18 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Multiplexing method in a multicarrier transmit diversity system
US6496535B2 (en) 2001-03-23 2002-12-17 Navini Networks, Inc. Method and system for effective channel estimation in a telecommunication system
US6771706B2 (en) 2001-03-23 2004-08-03 Qualcomm Incorporated Method and apparatus for utilizing channel state information in a wireless communication system
GB0108381D0 (en) 2001-04-04 2001-05-23 Koninl Philips Electronics Nv Radio communication system
US6982946B2 (en) 2001-04-05 2006-01-03 Telefonaktiebolaget Lm Ericsson (Publ) Partly orthogonal multiple code trees
US7929631B2 (en) * 2001-04-23 2011-04-19 Texas Instruments Incorporated Multiple space time transmit diversity communication system with selected complex conjugate inputs
US6859747B2 (en) 2001-04-26 2005-02-22 Siemens Energy & Automation, Inc. Method and apparatus for self-calibrating a motion control system
US7173981B1 (en) 2001-04-27 2007-02-06 The Directv Group, Inc. Dual layer signal processing in a layered modulation digital signal system
US6785341B2 (en) 2001-05-11 2004-08-31 Qualcomm Incorporated Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information
US6711124B2 (en) 2001-05-25 2004-03-23 Ericsson Inc. Time interval based channel estimation with transmit diversity
JP4387791B2 (en) 2001-05-25 2009-12-24 リージェンツ オブ ザ ユニバーシティ オブ ミネソタ Space-time coded transmission method in a wireless communication network
US6999472B2 (en) 2001-05-30 2006-02-14 Nokia Mobile Phones Limited Apparatus, and associated method, for space-time encoding, and decoding, data at a selected code rate
US20020193146A1 (en) 2001-06-06 2002-12-19 Mark Wallace Method and apparatus for antenna diversity in a wireless communication system
FR2827439B1 (en) 2001-07-13 2003-10-24 Leroy Somer Moteurs DISCOID MACHINE
US6441786B1 (en) 2001-07-20 2002-08-27 Motorola, Inc. Adaptive antenna array and method for control thereof
CN1161907C (en) 2001-07-20 2004-08-11 华为技术有限公司 Downstream feedback multiple-antenna emitting method and device for radio communication system
EP1283614A1 (en) * 2001-08-10 2003-02-12 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Channel estimation in a multicarrier transmit diversity system
US7359466B2 (en) 2001-08-24 2008-04-15 Lucent Technologies Inc. Signal detection by a receiver in a multiple antenna time-dispersive system
US7149254B2 (en) 2001-09-06 2006-12-12 Intel Corporation Transmit signal preprocessing based on transmit antennae correlations for multiple antennae systems
US7248559B2 (en) 2001-10-17 2007-07-24 Nortel Networks Limited Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
US7327798B2 (en) 2001-10-19 2008-02-05 Lg Electronics Inc. Method and apparatus for transmitting/receiving signals in multiple-input multiple-output communication system provided with plurality of antenna elements
KR200260860Y1 (en) 2001-10-25 2002-01-17 김지환 Collapsible charger for portable phone
US7095987B2 (en) 2001-11-15 2006-08-22 Texas Instruments Incorporated Method and apparatus for received uplinked-signal based adaptive downlink diversity within a communication system
US6760388B2 (en) 2001-12-07 2004-07-06 Qualcomm Incorporated Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems
JP3992489B2 (en) 2001-12-12 2007-10-17 株式会社エヌ・ティ・ティ・ドコモ Wireless communication method and apparatus
US20030112745A1 (en) 2001-12-17 2003-06-19 Xiangyang Zhuang Method and system of operating a coded OFDM communication system
JP2003198645A (en) 2001-12-27 2003-07-11 Sharp Corp Transmitter and communication system using the same
BR0306718A (en) 2002-01-04 2004-12-28 Nokia Corp Methods and apparatus for transmitting complex symbols and for receiving a signal, a system comprising a transmitter and a receiver and transmission code matrix
US7020110B2 (en) 2002-01-08 2006-03-28 Qualcomm Incorporated Resource allocation for MIMO-OFDM communication systems
EP1469686B1 (en) 2002-01-18 2013-05-29 Fujitsu Limited Method and apparatus for controlling feedback in closed loop transmission diversity
US6862271B2 (en) 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
US6785520B2 (en) 2002-03-01 2004-08-31 Cognio, Inc. System and method for antenna diversity using equal power joint maximal ratio combining
US20030181211A1 (en) 2002-03-19 2003-09-25 Javad Razavilar Method and apparatus for dynamic channel selection in wireless modems
JP3881266B2 (en) 2002-03-19 2007-02-14 松下電器産業株式会社 Time code signal transmission method and time code signal transmission apparatus
US7197084B2 (en) 2002-03-27 2007-03-27 Qualcomm Incorporated Precoding for a multipath channel in a MIMO system
US6847805B2 (en) * 2002-03-29 2005-01-25 Lucent Technologies Inc. Method for closed-loop subspace transmission and reception in a two transmit N-receive antenna system
US6741587B2 (en) 2002-04-02 2004-05-25 Nokia Corporation Inter-frequency measurements with MIMO terminals
KR100896682B1 (en) 2002-04-09 2009-05-14 삼성전자주식회사 Mobile communication apparatus and method having transmitting/receiving multiantenna
US6801580B2 (en) 2002-04-09 2004-10-05 Qualcomm, Incorporated Ordered successive interference cancellation receiver processing for multipath channels
US6711528B2 (en) 2002-04-22 2004-03-23 Harris Corporation Blind source separation utilizing a spatial fourth order cumulant matrix pencil
US7522673B2 (en) 2002-04-22 2009-04-21 Regents Of The University Of Minnesota Space-time coding using estimated channel information
EP1359684A1 (en) 2002-04-30 2003-11-05 Motorola Energy Systems Inc. Wireless transmission using an adaptive transmit antenna array
KR100511292B1 (en) 2002-04-30 2005-08-31 엘지전자 주식회사 Update method for beamforming weight vector of rake receiver and receiving apparatus using beamforming weight vector
US6847306B2 (en) 2002-05-17 2005-01-25 Keyvan T. Diba Emergency traffic signal attachment
US6810506B1 (en) 2002-05-20 2004-10-26 Synopsys, Inc. Methodology for stitching reduced-order models of interconnects together
US7327800B2 (en) 2002-05-24 2008-02-05 Vecima Networks Inc. System and method for data detection in wireless communication systems
GB0212165D0 (en) 2002-05-27 2002-07-03 Nokia Corp A wireless system
FI20021013A0 (en) 2002-05-29 2002-05-29 Nokia Corp Procedure for data communication and data transmission systems
KR100548311B1 (en) 2002-06-07 2006-02-02 엘지전자 주식회사 Transmission diversity apparatus and method for mobile communication system
US7061967B2 (en) 2002-06-24 2006-06-13 Comsys Communication & Signal Processing Ltd. Multipath channel tap delay estimation in a CDMA spread spectrum receiver
US7095709B2 (en) 2002-06-24 2006-08-22 Qualcomm, Incorporated Diversity transmission modes for MIMO OFDM communication systems
US7613248B2 (en) * 2002-06-24 2009-11-03 Qualcomm Incorporated Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems
US7301924B1 (en) 2002-07-15 2007-11-27 Cisco Technology, Inc. Media access control for MIMO wireless network
JP3677492B2 (en) 2002-07-31 2005-08-03 松下電器産業株式会社 Multicarrier transmission apparatus and multicarrier transmission method
US7092737B2 (en) 2002-07-31 2006-08-15 Mitsubishi Electric Research Laboratories, Inc. MIMO systems with rate feedback and space time transmit diversity
US7394754B2 (en) 2002-08-01 2008-07-01 Mediatek Inc. System and method for transmitting data in a multiple-branch transmitter-diversity orthogonal frequency-division multiplexing (OFDM) system
JP4098027B2 (en) 2002-08-01 2008-06-11 松下電器産業株式会社 Wireless base station equipment
US6940917B2 (en) 2002-08-27 2005-09-06 Qualcomm, Incorporated Beam-steering and beam-forming for wideband MIMO/MISO systems
US7529177B2 (en) 2002-08-28 2009-05-05 Agere Systems Inc. Dithering scheme using multiple antennas for OFDM systems
ATE377878T1 (en) 2002-09-05 2007-11-15 Mitsubishi Electric Inf Tech MC-CDMA DOWNWARD BEAM FORMATION METHOD WHERE THE ANTENNA ELEMENT WEIGHTS ARE USER AND FREQUENCY INDIVIDUAL AND ADJUSTED TO MAXIMIZE THE SIGNAL INTERFERENCE AND NOISE RATIO
US7031669B2 (en) 2002-09-10 2006-04-18 Cognio, Inc. Techniques for correcting for phase and amplitude offsets in a MIMO radio device
US20040081263A1 (en) 2002-10-24 2004-04-29 Lee King F. Method and apparatus for receiving diversity transmissions
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US7151809B2 (en) 2002-10-25 2006-12-19 Qualcomm, Incorporated Channel estimation and spatial processing for TDD MIMO systems
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US7324429B2 (en) 2002-10-25 2008-01-29 Qualcomm, Incorporated Multi-mode terminal in a wireless MIMO system
US7317750B2 (en) 2002-10-31 2008-01-08 Lot 41 Acquisition Foundation, Llc Orthogonal superposition coding for direct-sequence communications
US7099698B2 (en) 2002-11-04 2006-08-29 Vivato, Inc. Complementary beamforming methods and apparatuses
US7057555B2 (en) 2002-11-27 2006-06-06 Cisco Technology, Inc. Wireless LAN with distributed access points for space management
US7024166B2 (en) 2002-12-18 2006-04-04 Qualcomm, Incorporated Transmission diversity systems
US7200631B2 (en) 2003-01-10 2007-04-03 Lucent Technologies Inc. Method and apparatus for determining an inverse square root of a given positive-definite hermitian matrix
US7386057B2 (en) 2003-02-20 2008-06-10 Nec Corporation Iterative soft interference cancellation and filtering for spectrally efficient high-speed transmission in MIMO systems
US7130580B2 (en) 2003-03-20 2006-10-31 Lucent Technologies Inc. Method of compensating for correlation between multiple antennas
US7099678B2 (en) 2003-04-10 2006-08-29 Ipr Licensing, Inc. System and method for transmit weight computation for vector beamforming radio communication
US7385617B2 (en) 2003-05-07 2008-06-10 Illinois Institute Of Technology Methods for multi-user broadband wireless channel estimation
US7079870B2 (en) 2003-06-09 2006-07-18 Ipr Licensing, Inc. Compensation techniques for group delay effects in transmit beamforming radio communication
WO2005006638A2 (en) 2003-06-18 2005-01-20 University Of Florida Wireless lan compatible multi-input multi-output system
GB0317147D0 (en) 2003-07-22 2003-08-27 Dalton Stephen "GAM"- Gravity-air-motion
KR100584321B1 (en) 2003-08-02 2006-05-26 삼성전자주식회사 Tdma type transceiver having cartesian feedback loop circuit
KR100575993B1 (en) 2003-08-07 2006-05-02 삼성전자주식회사 Method and apparatus for scheduling multi-user in wireless communication system using multiple transmit/receive antenna
US7065144B2 (en) 2003-08-27 2006-06-20 Qualcomm Incorporated Frequency-independent spatial processing for wideband MISO and MIMO systems
US7356073B2 (en) 2003-09-10 2008-04-08 Nokia Corporation Method and apparatus providing an advanced MIMO receiver that includes a signal-plus-residual-interference (SPRI) detector
US7742546B2 (en) 2003-10-08 2010-06-22 Qualcomm Incorporated Receiver spatial processing for eigenmode transmission in a MIMO system
US7298805B2 (en) 2003-11-21 2007-11-20 Qualcomm Incorporated Multi-antenna transmission for spatial division multiple access
US7302009B2 (en) 2003-12-17 2007-11-27 Qualcomm Incorporated Broadcast transmission with spatial spreading in a multi-antenna communication system
US7778425B2 (en) 2003-12-24 2010-08-17 Nokia Corporation Method for generating noise references for generalized sidelobe canceling
US7194042B2 (en) 2004-01-13 2007-03-20 Qualcomm Incorporated Data transmission with spatial spreading in a mimo communication system
US7336746B2 (en) 2004-12-09 2008-02-26 Qualcomm Incorporated Data transmission with spatial spreading in a MIMO communication system
US20050180312A1 (en) 2004-02-18 2005-08-18 Walton J. R. Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
US8169889B2 (en) 2004-02-18 2012-05-01 Qualcomm Incorporated Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
US7206354B2 (en) 2004-02-19 2007-04-17 Qualcomm Incorporated Calibration of downlink and uplink channel responses in a wireless MIMO communication system
US7447268B2 (en) 2004-03-31 2008-11-04 Intel Corporation OFDM system with per subcarrier phase rotation
US7583747B1 (en) 2004-03-31 2009-09-01 University Of Alberta Method of systematic construction of space-time constellations, system and method of transmitting space-time constellations
US20050238111A1 (en) 2004-04-09 2005-10-27 Wallace Mark S Spatial processing with steering matrices for pseudo-random transmit steering in a multi-antenna communication system
US7555053B2 (en) 2004-04-14 2009-06-30 Broadcom Corporation Long training sequence for MIMO WLAN systems
US8923785B2 (en) 2004-05-07 2014-12-30 Qualcomm Incorporated Continuous beamforming for a MIMO-OFDM system
US7564814B2 (en) 2004-05-07 2009-07-21 Qualcomm, Incorporated Transmission mode and rate selection for a wireless communication system
US8285226B2 (en) 2004-05-07 2012-10-09 Qualcomm Incorporated Steering diversity for an OFDM-based multi-antenna communication system
US20050267925A1 (en) 2004-05-28 2005-12-01 Clue Vladimir I Methods and apparatus for transforming amplitude-frequency signal characteristics and interpolating analytical functions using circulant matrices
US8619907B2 (en) 2004-06-10 2013-12-31 Agere Systems, LLC Method and apparatus for preamble training in a multiple antenna communication system
US7110463B2 (en) 2004-06-30 2006-09-19 Qualcomm, Incorporated Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system
US7978649B2 (en) 2004-07-15 2011-07-12 Qualcomm, Incorporated Unified MIMO transmission and reception
US7894548B2 (en) 2004-09-03 2011-02-22 Qualcomm Incorporated Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system
US7978778B2 (en) 2004-09-03 2011-07-12 Qualcomm, Incorporated Receiver structures for spatial spreading with space-time or space-frequency transmit diversity
US7539253B2 (en) 2004-09-10 2009-05-26 Intel Corporation Interpolation in channel state feedback
US7289770B2 (en) * 2004-09-28 2007-10-30 Intel Corporation Compact feedback for closed loop MIMO
US7656842B2 (en) 2004-09-30 2010-02-02 Motorola, Inc. Method and apparatus for MIMO transmission optimized for successive cancellation receivers
US7711762B2 (en) 2004-11-15 2010-05-04 Qualcomm Incorporated Efficient computation for eigenvalue decomposition and singular value decomposition of matrices
JP4648401B2 (en) 2004-11-15 2011-03-09 クゥアルコム・インコーポレイテッド Eigenvalue decomposition and singular value decomposition of matrix using Jacobi rotation
US7895254B2 (en) 2004-11-15 2011-02-22 Qualcomm Incorporated Eigenvalue decomposition and singular value decomposition of matrices using Jacobi rotation
US20060285531A1 (en) 2005-06-16 2006-12-21 Howard Steven J Efficient filter weight computation for a MIMO system
US7548730B2 (en) * 2006-03-16 2009-06-16 Intel Corporation Systems and methods for improving performance of multiple spatial communication channels
US8543070B2 (en) 2006-04-24 2013-09-24 Qualcomm Incorporated Reduced complexity beam-steered MIMO OFDM system
US7787554B1 (en) * 2006-05-02 2010-08-31 Marvell International Ltd. Beamforming to a subset of receive antennas in a wireless MIMO communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004054191A1 (en) * 2002-12-11 2004-06-24 Qualcomm Incorporated Derivation of eigenvectors for spatial processing in mimo communication systems
US20040190636A1 (en) * 2003-03-31 2004-09-30 Oprea Alexandru M. System and method for wireless communication systems
WO2005060144A1 (en) * 2003-12-17 2005-06-30 Qualcomm Incorporated Spatial spreading in a multi-antenna communication system

Also Published As

Publication number Publication date
EP2020112A2 (en) 2009-02-04
US20070268181A1 (en) 2007-11-22
RU2008150480A (en) 2010-06-27
JP2009538578A (en) 2009-11-05
EP2020112B1 (en) 2013-06-05
CN101449504A (en) 2009-06-03
US8290089B2 (en) 2012-10-16
KR20090018138A (en) 2009-02-19
RU2425448C2 (en) 2011-07-27
KR101162811B1 (en) 2012-07-09
WO2007137280A2 (en) 2007-11-29
JP5096463B2 (en) 2012-12-12
CA2650430C (en) 2013-01-08
CA2650430A1 (en) 2007-11-29
CN101449504B (en) 2013-05-29
BRPI0711887A2 (en) 2012-01-10

Similar Documents

Publication Publication Date Title
WO2007137280A3 (en) Derivation and feedback of a transmit steering matrix
WO2007133564A3 (en) Codebook precoding with variable feedback
WO2009142785A3 (en) Method to allow secure communications among communication units
WO2008054737A3 (en) Method and apparatus for processing feedback in a wireless communication system
WO2008021396A3 (en) Method and apparatus for providing efficient precoding feedback in a mimo wireless communication system
WO2008122923A3 (en) System and method for distribution of credentials
WO2010062051A3 (en) Pre-coding method for spatial multiplexing in multiple input and output system
AR066358A1 (en) ERROR DETECTION IN FEEDBACK AND CHECK SIGNALS IN WIRELESS COMMUNICATION SYSTEMS
WO2009075631A3 (en) Methods and devices for communicating on a radio channel based on jointly encoding a preamble format with random access configuration
WO2008098093A3 (en) Apparatus and method for mimo transmission with explicit and implicit cyclic delays
MY139975A (en) Efficient computation of spatial filter matrices for steering transmit diversity in a mimo communication system
WO2009031140A3 (en) Information protection device
WO2009132178A3 (en) Backward compatible bandwidth extension
WO2008133582A3 (en) Method and arrangement for adapting a multi-antenna transmission
WO2007002786A3 (en) Exercise equipment with convergent hand grips
WO2008021417A3 (en) Process for brominating butadiene/vinyl aromatic copolymers
WO2007117426A3 (en) Glucose meter communication method and system
WO2008115585A3 (en) Method and apparatus for communicating precoding or beamforming information to users in mimo wireless communication systems
WO2011156201A3 (en) Method and apparatus for determining channel bandwidth
WO2008118620A3 (en) Distance-based presence management
WO2007127637A3 (en) Method and system for providing cellular assisted secure communications of a plurality of ad hoc devices
WO2006048712A3 (en) Closed-loop signalling method for controlling multiple transmit beams and correspondingly adapted transceiver devices
WO2014003898A8 (en) Full and partial compressed feedback formats for wlan
WO2006072665A8 (en) Data transmission in mobile communication system
EP1950900A4 (en) Transmitter, communication system and transmission method

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200780018821.6

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07797662

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 2650430

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 6187/CHENP/2008

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2007797662

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2009512274

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 1020087030719

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2008150480

Country of ref document: RU

ENP Entry into the national phase

Ref document number: PI0711887

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20081121