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- usuariosInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2007284906A1 (en) * | 2006-08-07 | 2008-02-21 | Interdigital Technology Corporation | Method, apparatus and system for implementing multi-user virtual multiple-input multiple-output |
EP2183861B1 (en) * | 2007-08-27 | 2017-01-25 | Apple Inc. | Communication system using mimo based network coding |
US8537790B2 (en) * | 2008-03-10 | 2013-09-17 | Motorola Mobility Llc | Hierarchical pilot structure in wireless communication systems |
CN101557246B (zh) * | 2008-04-07 | 2012-10-03 | 中国移动通信集团公司 | 一种上行功率控制方法及装置 |
WO2009149561A1 (en) * | 2008-06-12 | 2009-12-17 | Nortel Networks Limited | Systems and methods for sc-fdma transmission diversity |
KR101467586B1 (ko) * | 2008-06-26 | 2014-12-02 | 엘지전자 주식회사 | 무선통신 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 |
KR101507170B1 (ko) * | 2008-06-26 | 2015-03-31 | 엘지전자 주식회사 | Sc-fdma 시스템에서 전송 다이버시티를 이용한 데이터 전송장치 및 방법 |
KR101567078B1 (ko) * | 2008-06-26 | 2015-11-09 | 엘지전자 주식회사 | 다중안테나를 이용한 데이터 전송장치 및 방법 |
KR101534349B1 (ko) * | 2008-06-26 | 2015-07-10 | 엘지전자 주식회사 | Stbc 기법을 이용한 데이터 전송방법 |
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 |
EP2481248A4 (en) * | 2009-09-21 | 2017-07-05 | Apple Inc. | Signaling and channel estimation for uplink transmit diversity |
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系统的协作传输方法 |
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系统的数据传输方法、装置及系统 |
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 |
MY193402A (en) * | 2016-07-21 | 2022-10-11 | Interdigital Patent Holdings Inc | Multiple input multiple output (mimo) setup in millimeter wave (mmw) wlan systems |
CN106788647B (zh) * | 2016-11-11 | 2020-11-10 | 上海电机学院 | 一种微蜂窝多天线系统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)
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 |
EP1359683B1 (en) * | 2002-04-30 | 2006-08-30 | Motorola, Inc. | Wireless communication using multi-transmit multi-receive antenna arrays |
US6907272B2 (en) | 2002-07-30 | 2005-06-14 | UNIVERSITé LAVAL | Array receiver with subarray selection |
ATE421809T1 (de) * | 2002-08-22 | 2009-02-15 | Imec Inter Uni Micro Electr | Verfahren zur mimo-übertragung für mehrere benutzer und entsprechende vorrichtungen |
KR100630108B1 (ko) * | 2002-10-10 | 2006-09-27 | 삼성전자주식회사 | 공간-시간 블럭부호를 사용하여 송신 안테나 다이버시티를지원하는 송수신 장치 |
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 |
US8320301B2 (en) * | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
GB2412679B (en) * | 2002-11-12 | 2005-12-21 | 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 |
EP1698086A2 (en) * | 2003-12-27 | 2006-09-06 | Electronics and Telecommunications Research Institute | A mimo-ofdm system using eigenbeamforming method |
US7929409B2 (en) * | 2004-01-13 | 2011-04-19 | Interdigital Technology Corporation | Orthogonal frequency division multiplexing (OFDM) method and apparatus for protecting and authenticating wirelessly transmitted digital information |
US20070183515A1 (en) * | 2004-02-27 | 2007-08-09 | Matsushita Electric Industrial Co., Ltd. | Method and apparataus for transmitting data in a multi-antenna wireless system |
WO2005117314A1 (en) * | 2004-05-20 | 2005-12-08 | Conexant Systems, Inc. | 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 |
US7570697B2 (en) * | 2004-07-01 | 2009-08-04 | 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 |
EP1779574A1 (en) * | 2004-08-20 | 2007-05-02 | 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 |
WO2006055718A2 (en) * | 2004-11-16 | 2006-05-26 | Qualcomm Incorporated | Closed-loop rate control for a mimo communication system |
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 |
AU2007284906A1 (en) * | 2006-08-07 | 2008-02-21 | Interdigital Technology Corporation | Method, apparatus and system for implementing multi-user virtual multiple-input multiple-output |
US8073069B2 (en) * | 2007-01-05 | 2011-12-06 | Apple Inc. | Multi-user MIMO-SDMA for finite rate feedback systems |
WO2008147269A1 (en) * | 2007-05-31 | 2008-12-04 | 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 |
-
2007
- 2007-08-02 AU AU2007284906A patent/AU2007284906A1/en not_active Abandoned
- 2007-08-02 EP EP07836431.2A patent/EP2050205B1/en not_active Not-in-force
- 2007-08-02 CA CA002660826A patent/CA2660826A1/en not_active Abandoned
- 2007-08-02 JP JP2009523778A patent/JP5061189B2/ja not_active Expired - Fee Related
- 2007-08-02 KR KR20097003660A patent/KR101177165B1/ko not_active IP Right Cessation
- 2007-08-02 MX MX2009001250A patent/MX2009001250A/es not_active Application Discontinuation
- 2007-08-02 CN CN200780029163.0A patent/CN101502020B/zh not_active Expired - Fee Related
- 2007-08-02 BR BRPI0714275-7A patent/BRPI0714275A2/pt not_active IP Right Cessation
- 2007-08-02 KR KR1020097004661A patent/KR20090032144A/ko not_active Application Discontinuation
- 2007-08-02 RU RU2009108332A patent/RU2411650C2/ru not_active IP Right Cessation
- 2007-08-02 EP EP15181317.7A patent/EP3001578B1/en not_active Not-in-force
- 2007-08-02 WO PCT/US2007/017227 patent/WO2008021008A2/en active Application Filing
- 2007-08-03 TW TW96128761A patent/TWI443990B/zh not_active IP Right Cessation
- 2007-08-07 US US11/834,923 patent/US8305956B2/en not_active Expired - Fee Related
- 2007-08-07 AR ARP070103469 patent/AR062228A1/es not_active Application Discontinuation
-
2009
- 2009-02-03 IL IL196863A patent/IL196863A0/en unknown
-
2012
- 2012-08-06 JP JP2012174250A patent/JP5555745B2/ja not_active Expired - Fee Related
- 2012-09-27 US US13/628,950 patent/US9264116B2/en not_active Expired - Fee Related
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2016
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Also Published As
Publication number | Publication date |
---|---|
WO2008021008A2 (en) | 2008-02-21 |
RU2411650C2 (ru) | 2011-02-10 |
US8305956B2 (en) | 2012-11-06 |
RU2009108332A (ru) | 2010-09-20 |
MX2009001250A (es) | 2009-04-07 |
EP3001578A1 (en) | 2016-03-30 |
TWI443990B (zh) | 2014-07-01 |
BRPI0714275A2 (pt) | 2013-04-16 |
KR20090032144A (ko) | 2009-03-31 |
JP2013031176A (ja) | 2013-02-07 |
KR20090032139A (ko) | 2009-03-31 |
WO2008021008A3 (en) | 2008-04-10 |
HK1222745A1 (zh) | 2017-07-07 |
IL196863A0 (en) | 2009-11-18 |
AU2007284906A1 (en) | 2008-02-21 |
KR101177165B1 (ko) | 2012-08-27 |
CN101502020A (zh) | 2009-08-05 |
JP5061189B2 (ja) | 2012-10-31 |
US20130022006A1 (en) | 2013-01-24 |
JP2010500814A (ja) | 2010-01-07 |
CA2660826A1 (en) | 2008-02-21 |
JP5555745B2 (ja) | 2014-07-23 |
CN101502020B (zh) | 2014-02-05 |
TW200812269A (en) | 2008-03-01 |
EP3001578B1 (en) | 2017-03-29 |
EP2050205A2 (en) | 2009-04-22 |
EP2050205B1 (en) | 2015-10-07 |
US20080032746A1 (en) | 2008-02-07 |
US9264116B2 (en) | 2016-02-16 |
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