AR062228A1 - Metodo, aparato y sistema para implementar tecnicas de multiples entradas multiples salidas virtuales para multi- usuarios - Google Patents

Metodo, aparato y sistema para implementar tecnicas de multiples entradas multiples salidas virtuales para multi- usuarios

Info

Publication number
AR062228A1
AR062228A1 ARP070103469A AR062228A1 AR 062228 A1 AR062228 A1 AR 062228A1 AR P070103469 A ARP070103469 A AR P070103469A AR 062228 A1 AR062228 A1 AR 062228A1
Authority
AR
Argentina
Prior art keywords
wtrus
antennas
users
base station
implementing
Prior art date
Application number
Other languages
English (en)
Inventor
Robert L Olesen
Donald M Grieco
Kyle Jung-Lin Pan
Original Assignee
Interdigital Tech Corp
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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of AR062228A1 publication Critical patent/AR062228A1/es

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
    • H04B7/0452—Multi-user MIMO 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
    • H04B7/0413—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
    • H04B7/0667—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 delayed versions of same signal
    • 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
    • H04B7/068—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 using space frequency 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • 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
    • H04B7/0617—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 for beam forming
    • 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
    • H04B7/0667—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 delayed versions of same signal
    • H04B7/0669—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 delayed versions of same signal using different channel coding between antennas
    • 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
    • H04B7/0667—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 delayed versions of same signal
    • H04B7/0671—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 delayed versions of same signal using different delays between antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Se describe un método y un sistema para implementar técnicas de multiples entradas multiples salidas (MIMO por sus siglas en inglés) virtuales de multi-usuarios para unidades inalámbricas de transmision/recepcion (WTRUs por sus siglas en inglés) que tienen una o más antenas. El sistema incluye una estacion de base y por lo menos una WTRU que tiene por lo menos dos antenas. El numero de antenas de la estacion de base no es menor que el numero de antenas de cualquiera de las WTRUs. La estacion de base genera una matriz de canales para las WTRUs y procesa las senales recibidas desde las WTRUs en base a una medicion de la matriz de canales. Las WTRUs pueden realizar pre-codificacion de transmision o formacion de haces propios usando la informacion de la matriz de canales. Las WTRUs también pueden realizar diversidad de transmision.
ARP070103469 2006-08-07 2007-08-07 Metodo, aparato y sistema para implementar tecnicas de multiples entradas multiples salidas virtuales para multi- usuarios AR062228A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83618906P 2006-08-07 2006-08-07

Publications (1)

Publication Number Publication Date
AR062228A1 true AR062228A1 (es) 2008-10-22

Family

ID=38984228

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP070103469 AR062228A1 (es) 2006-08-07 2007-08-07 Metodo, aparato y sistema para implementar tecnicas de multiples entradas multiples salidas virtuales para multi- usuarios

Country Status (15)

Country Link
US (2) US8305956B2 (es)
EP (2) EP2050205B1 (es)
JP (2) JP5061189B2 (es)
KR (2) KR101177165B1 (es)
CN (1) CN101502020B (es)
AR (1) AR062228A1 (es)
AU (1) AU2007284906A1 (es)
BR (1) BRPI0714275A2 (es)
CA (1) CA2660826A1 (es)
HK (1) HK1222745A1 (es)
IL (1) IL196863A0 (es)
MX (1) MX2009001250A (es)
RU (1) RU2411650C2 (es)
TW (1) TWI443990B (es)
WO (1) WO2008021008A2 (es)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2009001250A (es) 2006-08-07 2009-04-07 Interdigital Tech Corp Metodo, aparato y sistema para implementar tecnicas de entradas multiples y salidas multiples (mimo) virtuales para usuarios multiples.
WO2009026695A1 (en) 2007-08-27 2009-03-05 Nortel Networks Limited Communication system using mimo based network coding
US8243678B2 (en) 2008-03-10 2012-08-14 Motorola Mobility, Inc. Hierarchical pilot structure in wireless communication systems
CN101557246B (zh) * 2008-04-07 2012-10-03 ***通信集团公司 一种上行功率控制方法及装置
CN102119500B (zh) * 2008-06-12 2014-09-10 苹果公司 用于sc-fdma发射分集的***和方法
KR101567078B1 (ko) * 2008-06-26 2015-11-09 엘지전자 주식회사 다중안테나를 이용한 데이터 전송장치 및 방법
KR101467586B1 (ko) * 2008-06-26 2014-12-02 엘지전자 주식회사 무선통신 시스템에서 전송 다이버시티를 이용한 데이터 전송장치 및 방법
KR101534349B1 (ko) * 2008-06-26 2015-07-10 엘지전자 주식회사 Ｓｔｂｃ 기법을 이용한 데이터 전송방법
KR101507170B1 (ko) * 2008-06-26 2015-03-31 엘지전자 주식회사 Ｓｃ-ｆｄｍａ 시스템에서 전송 다이버시티를 이용한 데이터 전송장치 및 방법
KR101497154B1 (ko) * 2008-06-26 2015-03-02 엘지전자 주식회사 Ｓｃ-ｆｄｍａ 시스템에서 전송 다이버시티를 이용한 데이터 전송장치 및 방법
KR101440628B1 (ko) * 2008-08-11 2014-09-17 엘지전자 주식회사 Ｓｃ-ｆｄｍａ 시스템에서 전송 다이버시티를 이용한 데이터 전송장치 및 방법
US8811371B2 (en) 2008-09-23 2014-08-19 Qualcomm Incorporated Transmit diversity scheme for uplink data transmissions
US8503572B2 (en) 2009-02-02 2013-08-06 Qualcomm Incorporated Antenna virtualization in a wireless communication environment
KR101055573B1 (ko) 2009-03-16 2011-08-08 주식회사 팬택 다중 사용자, 다중 안테나 무선 송출 시스템에서의 프리 코딩 장치
GB2471694A (en) 2009-07-08 2011-01-12 Toshiba Res Europ Ltd Determining receiver beam forming vectors in multi-user multiple-input multiple-output (MIMO) systems
CN101997649B (zh) * 2009-08-21 2014-12-10 中兴通讯股份有限公司 一种基于正交分集的mu-mimo处理方法和装置
RU2518509C2 (ru) * 2009-09-21 2014-06-10 Эппл Инк Способ передачи потока данных и мобильная станция
US20110176633A1 (en) * 2010-01-20 2011-07-21 Eric Ojard Method and system for orthogonalized beamforming in multiple user multiple input multiple output (mu-mimo) communication systems
CN101883075B (zh) * 2010-07-05 2012-11-14 电子科技大学 一种基于虚拟mimo***的协作传输方法
CN102025465A (zh) * 2010-12-24 2011-04-20 清华大学 一种基于用户配对的多基站协作下的通信方法
EP2756608A2 (en) * 2011-09-14 2014-07-23 Rearden LLC Systems and methods to exploit areas of coherence in wireless systems
KR102077740B1 (ko) 2013-03-18 2020-02-14 삼성전자주식회사 기지국과의 통신을 위한 자원을 할당하는 방법 및 단말
CN104219021A (zh) 2013-05-31 2014-12-17 中兴通讯股份有限公司 一种下行虚拟多天线***的数据传输方法、装置及***
KR102186694B1 (ko) * 2013-09-13 2020-12-04 삼성전자주식회사 다중입출력 안테나 시스템의 안테나 그룹화 방법 및 장치
RU2553771C1 (ru) * 2013-12-03 2015-06-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" Способ получения многослойного покрытия для режущего инструмента
JP6510363B2 (ja) * 2015-08-07 2019-05-08 日本電信電話株式会社 無線通信システム及び無線通信方法
CN106130631B (zh) * 2016-06-24 2019-02-19 中国人民解放军信息工程大学 一种可见光通信装置
CN115296707B (zh) * 2016-07-21 2024-03-26 交互数字专利控股公司 毫米波wlan***中的多输入多输出设置
CN106788647B (zh) * 2016-11-11 2020-11-10 上海电机学院 一种微蜂窝多天线***自适应分簇的调整方法
CN107040296B (zh) * 2017-02-28 2020-05-26 北京航空航天大学 毫米波通信中的信道估计方法
WO2021087694A1 (zh) * 2019-11-04 2021-05-14 深圳市大疆创新科技有限公司 Vmimo天线、微波雷达及可移动平台

Family Cites Families (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI981377A (fi) 1998-04-24 1999-10-25 Nokia Networks Oy Lähetysantennidiversiteetti
US8670390B2 (en) * 2000-11-22 2014-03-11 Genghiscomm Holdings, LLC Cooperative beam-forming in wireless networks
JP2004517549A (ja) 2000-12-28 2004-06-10 ノーテル・ネットワークス・リミテッド Ｍｉｍｏ無線通信システム
US6870515B2 (en) 2000-12-28 2005-03-22 Nortel Networks Limited MIMO wireless communication system
US7218692B2 (en) * 2001-06-15 2007-05-15 Texas Instruments Incorporated Multi-path interference cancellation for transmit diversity
DE10132492A1 (de) * 2001-07-03 2003-01-23 Hertz Inst Heinrich Adaptives Signalverarbeitungsverfahren zur bidirektionalen Funkübertragung in einem MIMO-Kanal und MIMO-System zur Verfahrensdurchführung
US7447967B2 (en) * 2001-09-13 2008-11-04 Texas Instruments Incorporated MIMO hybrid-ARQ using basis hopping
US6956907B2 (en) * 2001-10-15 2005-10-18 Qualcomm, Incorporated Method and apparatus for determining power allocation in a MIMO communication system
US20030125040A1 (en) * 2001-11-06 2003-07-03 Walton Jay R. Multiple-access multiple-input multiple-output (MIMO) communication system
US7020110B2 (en) * 2002-01-08 2006-03-28 Qualcomm Incorporated Resource allocation for MIMO-OFDM communication systems
KR100896682B1 (ko) 2002-04-09 2009-05-14 삼성전자주식회사 송/수신 다중 안테나를 포함하는 이동 통신 장치 및 방법
DE60214340T2 (de) 2002-04-30 2007-05-16 Motorola, Inc., Schaumburg Drahtlose Kommunikation mittels Vielfachsende- und Vielfachempfangs-Antennenanordnung
US6907272B2 (en) 2002-07-30 2005-06-14 UNIVERSITé LAVAL Array receiver with subarray selection
EP1392004B1 (en) * 2002-08-22 2009-01-21 Interuniversitair Microelektronica Centrum Vzw Method for multi-user MIMO transmission and apparatuses suited therefore
KR100630108B1 (ko) * 2002-10-10 2006-09-27 삼성전자주식회사 공간-시간 블럭부호를 사용하여 송신 안테나 다이버시티를지원하는 송수신 장치
US8320301B2 (en) * 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US7002900B2 (en) * 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US7151809B2 (en) * 2002-10-25 2006-12-19 Qualcomm, Incorporated Channel estimation and spatial processing for TDD MIMO systems
US7032673B2 (en) * 2002-11-12 2006-04-25 Vetco Gray Inc. Orientation system for a subsea well
US7483675B2 (en) * 2004-10-06 2009-01-27 Broadcom Corporation Method and system for weight determination in a spatial multiplexing MIMO system for WCDMA/HSDPA
KR101000388B1 (ko) 2003-05-15 2010-12-13 엘지전자 주식회사 이동 통신 시스템 및 이 이동 통신 시스템에서 신호를처리하는 방법
US8391322B2 (en) * 2003-07-09 2013-03-05 Broadcom Corporation Method and system for single weight (SW) antenna system for spatial multiplexing (SM) MIMO system for WCDMA/HSDPA
JP4546177B2 (ja) * 2003-07-28 2010-09-15 パナソニック株式会社 無線通信装置および無線通信方法
US7257167B2 (en) 2003-08-19 2007-08-14 The University Of Hong Kong System and method for multi-access MIMO channels with feedback capacity constraint
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
KR100580840B1 (ko) 2003-10-09 2006-05-16 한국전자통신연구원 다중 입력 다중 출력 시스템의 데이터 통신 방법
JP4187104B2 (ja) * 2003-10-20 2008-11-26 京セラ株式会社 複数アンテナを備えた基地局装置
US8705659B2 (en) * 2003-11-06 2014-04-22 Apple Inc. Communication channel optimization systems and methods in multi-user communication systems
US7298805B2 (en) 2003-11-21 2007-11-20 Qualcomm Incorporated Multi-antenna transmission for spatial division multiple access
EP1564908A1 (en) * 2003-12-23 2005-08-17 Telefonaktiebolaget LM Ericsson (publ) Advanced multi-sensor processing
US7872963B2 (en) * 2003-12-27 2011-01-18 Electronics And Telecommunications Research Institute MIMO-OFDM system using eigenbeamforming method
AR047414A1 (es) * 2004-01-13 2006-01-18 Interdigital Tech Corp Un metodo y un aparato ofdm para proteger y autenticar informacion digital transmitida inalambricamente
WO2005083902A1 (en) * 2004-02-27 2005-09-09 Matsushita Electric Industrial Co., Ltd. Method and apparatus for transmitting data in a multi-antenna wireless system
EP1756991B1 (en) * 2004-05-20 2016-09-28 Intellectual Ventures I LLC Cyclic diversity systems and methods
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
AU2005262361B2 (en) * 2004-07-01 2010-05-20 Qualcomm Incorporated Advanced MIMO interleaving
US8457152B2 (en) * 2004-07-16 2013-06-04 Qualcomm Incorporated Multiple modulation schemes in single rate layering wireless communication systems
US7813458B2 (en) * 2004-08-20 2010-10-12 Nokia Corporation System and method for precoding in a multiple-input multiple-output (MIMO) system
JP2006067070A (ja) * 2004-08-25 2006-03-09 Fujitsu Ltd Ｍｉｍｏシステム受信方法及びその装置
US7522562B2 (en) * 2004-10-06 2009-04-21 Broadcom Corporation Method and system for channel estimation in a spatial multiplexing MIMO system
KR20060035358A (ko) * 2004-10-22 2006-04-26 삼성전자주식회사 다수의 송수신 안테나를 구비하는 이동통신시스템의 고속데이터 통신 장치 및 방법
KR20060038812A (ko) 2004-11-01 2006-05-04 엘지전자 주식회사 다중입출력 시스템의 선행 코딩 행렬 정보 전송 방법 및이를 이용한 신호 전송 방법
US7545875B2 (en) * 2004-11-03 2009-06-09 Nokia Corporation System and method for space-time-frequency coding in a multi-antenna transmission system
US8130855B2 (en) * 2004-11-12 2012-03-06 Interdigital Technology Corporation Method and apparatus for combining space-frequency block coding, spatial multiplexing and beamforming in a MIMO-OFDM system
CN101099326B (zh) * 2004-11-16 2012-10-03 高通股份有限公司 Mimo通信***的闭环速率控制
GB2422516B (en) * 2005-01-21 2007-09-26 Toshiba Res Europ Ltd Wireless communications system and method
KR100922958B1 (ko) * 2005-03-14 2009-10-22 삼성전자주식회사 다중 사용자 다이버시티를 지원하는 다중 안테나 이동통신시스템에서 사용자 할당장치 및 방법
US7602855B2 (en) * 2005-04-01 2009-10-13 Interdigital Technology Corporation Method and apparatus for singular value decomposition of a channel matrix
JP4445554B2 (ja) * 2005-04-14 2010-04-07 パナソニック株式会社 無線通信システムおよび無線通信方法
US7768979B2 (en) * 2005-05-18 2010-08-03 Qualcomm Incorporated Separating pilot signatures in a frequency hopping OFDM system by selecting pilot symbols at least hop away from an edge of a hop region
US20070004465A1 (en) * 2005-06-29 2007-01-04 Aris Papasakellariou Pilot Channel Design for Communication Systems
US7630337B2 (en) * 2005-09-21 2009-12-08 Broadcom Corporation Method and system for an improved user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission
US7602837B2 (en) * 2005-10-20 2009-10-13 Freescale Semiconductor, Inc. Beamforming for non-collaborative, space division multiple access systems
US20070147536A1 (en) * 2005-12-27 2007-06-28 Ezer Melzer Wireless communication device employing interference-sensitive mode selection and associated methods
US7852811B2 (en) * 2006-02-03 2010-12-14 Freescale Semiconductor, Inc. Communication system with MIMO channel estimation using peak-limited pilot signals
JP2007228029A (ja) * 2006-02-21 2007-09-06 Fujitsu Ltd 無線通信システム及び受信装置
US8014455B2 (en) * 2006-03-27 2011-09-06 Qualcomm Incorporated Feedback of differentially encoded channel state information for multiple-input multiple-output (MIMO) and subband scheduling in a wireless communication system
US20090117859A1 (en) * 2006-04-07 2009-05-07 Belair Networks Inc. System and method for frequency offsetting of information communicated in mimo based wireless networks
US8331342B2 (en) * 2006-04-28 2012-12-11 Samsung Electronics Co., Ltd. Apparatus and method for switching between single user and multi-user MIMO operation in a wireless network
MX2009001250A (es) * 2006-08-07 2009-04-07 Interdigital Tech Corp Metodo, aparato y sistema para implementar tecnicas de entradas multiples y salidas multiples (mimo) virtuales para usuarios multiples.
US8073069B2 (en) * 2007-01-05 2011-12-06 Apple Inc. Multi-user MIMO-SDMA for finite rate feedback systems
US8228878B2 (en) * 2007-05-31 2012-07-24 Telefonaktiebolaget Lm Ericsson (Publ) Method and system of communications
US8494099B2 (en) * 2009-09-08 2013-07-23 Lsi Corporation Signal processing using modified blockwise analytic matrix inversion

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