TW200733662A - A method and apparatus for pre-coding for a MIMO system - Google Patents

A method and apparatus for pre-coding for a MIMO system

Info

Publication number
TW200733662A
TW200733662A TW095139918A TW95139918A TW200733662A TW 200733662 A TW200733662 A TW 200733662A TW 095139918 A TW095139918 A TW 095139918A TW 95139918 A TW95139918 A TW 95139918A TW 200733662 A TW200733662 A TW 200733662A
Authority
TW
Taiwan
Prior art keywords
systems
methods
precoding matrix
precoding
coding
Prior art date
Application number
TW095139918A
Other languages
English (en)
Inventor
Gwendolyn D Barriac
Jibing Wang
Alexei Gorokhov
Hemanth Sampath
Tamer Kadous
Original Assignee
Qualcomm Inc
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 filed Critical Qualcomm Inc
Publication of TW200733662A publication Critical patent/TW200733662A/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/02Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618Space-time coding
    • H04L1/0675Space-time coding characterised by the signaling
    • H04L1/0687Full feedback
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • H04B7/0417Feedback systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • H04B7/0615Diversity 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
    • H04B7/0619Diversity 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
    • H04B7/0636Feedback format
    • H04B7/0639Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
TW095139918A 2005-10-27 2006-10-27 A method and apparatus for pre-coding for a MIMO system TW200733662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73102205P 2005-10-27 2005-10-27

Publications (1)

Publication Number Publication Date
TW200733662A true TW200733662A (en) 2007-09-01

Family

ID=37907392

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095139918A TW200733662A (en) 2005-10-27 2006-10-27 A method and apparatus for pre-coding for a MIMO system

Country Status (10)

Country Link
US (1) US20070165738A1 (zh)
EP (1) EP2039046A2 (zh)
JP (1) JP2009514460A (zh)
KR (1) KR100977434B1 (zh)
CN (1) CN101346923A (zh)
BR (1) BRPI0617866A2 (zh)
CA (1) CA2627388A1 (zh)
RU (1) RU2388142C2 (zh)
TW (1) TW200733662A (zh)
WO (1) WO2007051192A2 (zh)

Families Citing this family (148)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
US8446892B2 (en) 2005-03-16 2013-05-21 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US9036538B2 (en) 2005-04-19 2015-05-19 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US8611284B2 (en) 2005-05-31 2013-12-17 Qualcomm Incorporated Use of supplemental assignments to decrement resources
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8879511B2 (en) 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US8599945B2 (en) 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US20070041457A1 (en) 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US8644292B2 (en) 2005-08-24 2014-02-04 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US7835460B2 (en) * 2005-10-27 2010-11-16 Qualcomm Incorporated Apparatus and methods for reducing channel estimation noise in a wireless transceiver
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US8045512B2 (en) 2005-10-27 2011-10-25 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9088384B2 (en) 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US8693405B2 (en) 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US8582509B2 (en) 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US7917176B2 (en) * 2006-02-14 2011-03-29 Nec Laboratories America, Inc. Structured codebook and successive beamforming for multiple-antenna systems
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
US7995670B2 (en) * 2006-05-24 2011-08-09 Samsung Electronics Co., Ltd. Method of transmitting and receiving data using precoding codebook in multi-user MIMO communication system and transmitter and receiver using the method
KR20070113967A (ko) * 2006-05-26 2007-11-29 엘지전자 주식회사 위상천이 기반의 프리코딩 방법 및 이를 지원하는 송수신기
TWI343200B (en) * 2006-05-26 2011-06-01 Lg Electronics Inc Method and apparatus for signal generation using phase-shift based pre-coding
TW200824378A (en) * 2006-08-17 2008-06-01 Interdigital Tech Corp Method and apparatus for reducing a peak-to-average power ratio in a multiple-input multiple-output system
US7839835B2 (en) * 2006-08-22 2010-11-23 Nec Laboratories America, Inc. Quantized precoding over a set of parallel channels
US7751495B1 (en) * 2006-09-06 2010-07-06 Marvell International Ltd. Equal power output spatial spreading matrix for use in a wireless MIMO communication system
KR20080026019A (ko) * 2006-09-19 2008-03-24 엘지전자 주식회사 위상천이 기반의 프리코딩 방법 및 이를 지원하는 송수신기
KR20080026010A (ko) * 2006-09-19 2008-03-24 엘지전자 주식회사 위상천이 기반의 프리코딩을 이용한 데이터 전송 방법 및이를 구현하는 송수신 장치
US7965783B2 (en) * 2007-01-08 2011-06-21 Cisco Technology, Inc. Method and system for transmitting data streams via a beamformed MIMO channel
CN104579445B (zh) 2007-01-12 2019-06-21 Lm爱立信电话有限公司 无线通信系统中的方法和结构
KR20080076683A (ko) * 2007-02-14 2008-08-20 엘지전자 주식회사 위상천이 기반의 프리코딩 방법 및 이를 지원하는 송수신기
US20080233902A1 (en) * 2007-03-21 2008-09-25 Interdigital Technology Corporation Method and apparatus for communicating precoding or beamforming information to users in mimo wireless communication systems
TWI455541B (zh) 2007-04-20 2014-10-01 Interdigital Tech Corp Mimo通訊高效預編碼資訊認證方法及裝置
KR101634890B1 (ko) * 2007-04-30 2016-06-29 인터디지탈 테크날러지 코포레이션 Mimo 무선 통신 시스템에서의 에러 검출 및 검사의 피드백 시그널링
US8179775B2 (en) * 2007-08-14 2012-05-15 Texas Instruments Incorporated Precoding matrix feedback processes, circuits and systems
CN101330479B (zh) * 2007-06-20 2011-04-20 中兴通讯股份有限公司 一种预编码多输入多输出传输及码本编码的方法
KR100980647B1 (ko) 2007-07-05 2010-09-07 삼성전자주식회사 다중 안테나 시스템에서 간섭 제거 장치 및 방법
KR101048442B1 (ko) 2007-08-08 2011-07-11 삼성전자주식회사 다중 입출력 무선통신 시스템에서 스트림별 유효 신호대 잡음비 생성 장치 및 방법
US8223855B2 (en) * 2007-08-10 2012-07-17 Motorola Mobility, Inc. Method for blindly detecting a precoding matrix index
US8099132B2 (en) * 2007-08-15 2012-01-17 Qualcomm Incorporated Antenna switching and uplink sounding channel measurement
KR20090030200A (ko) 2007-09-19 2009-03-24 엘지전자 주식회사 위상천이 기반의 프리코딩을 이용한 데이터 송수신 방법 및이를 지원하는 송수신기
JP4719728B2 (ja) * 2007-10-01 2011-07-06 株式会社エヌ・ティ・ティ・ドコモ 通信システム、ユーザ装置及び送信方法
HUE037533T2 (hu) 2007-10-08 2018-09-28 Ericsson Telefon Ab L M Eljárások és elrendezések vezérlési információnak kommunikációs rendszerben való jelzésére
CN101442349B (zh) * 2007-11-21 2013-02-20 三星电子株式会社 多用户mimo码本子集选择方法
CN101459634B (zh) * 2007-12-14 2011-06-01 华为技术有限公司 一种发送下行链路信号的方法及基站
CN101471708B (zh) * 2007-12-28 2012-09-05 华为技术有限公司 时分双工多输入多输出的下行波束形成方法、装置和系统
KR100991794B1 (ko) * 2007-12-31 2010-11-03 엘지전자 주식회사 셀간 간섭 감소 방법
KR100995045B1 (ko) * 2007-12-31 2010-11-19 엘지전자 주식회사 협동 다중 입출력 통신 시스템에서, 프리코딩된 신호를송신하는 방법
CN101483460A (zh) 2008-01-11 2009-07-15 三星电子株式会社 构建用于mu-mimo系统的可分级pmi信令方法
AU2009212717B2 (en) 2008-02-01 2013-04-04 Guangdong Oppo Mobile Telecommunications Corp., Ltd. System and method for uplink timing synchronization in conjunction with discontinuous reception
US8121045B2 (en) 2008-03-21 2012-02-21 Research In Motion Limited Channel quality indicator transmission timing with discontinuous reception
US8179828B2 (en) * 2008-03-28 2012-05-15 Research In Motion Limited Precoding matrix index feedback interaction with discontinuous reception
US8199725B2 (en) 2008-03-28 2012-06-12 Research In Motion Limited Rank indicator transmission during discontinuous reception
CN101557280B (zh) * 2008-04-11 2014-04-09 株式会社Ntt都科摩 多入多出系统中预编码矩阵/矢量的选择方法和装置
KR101336961B1 (ko) * 2008-04-17 2013-12-04 삼성전자주식회사 다중 입출력 무선통신 시스템에서 미드앰블을 이용한프리코딩 장치 및 방법
KR101207569B1 (ko) * 2008-04-22 2012-12-03 삼성전자주식회사 전처리 행렬 선택 장치 및 방법
CN101316156B (zh) * 2008-07-21 2012-08-29 华为技术有限公司 多输入多输出系统中选取预编码矩阵的方法、设备和系统
WO2010019015A2 (en) * 2008-08-14 2010-02-18 Electronics And Telecommunications Research Institute Method to generate beamforming vector and provide the information for generating beamforming vector
US7924754B2 (en) * 2008-09-23 2011-04-12 Telefonaktiebolaget L M Ericsson Multiple carrier acknowledgment signaling
KR101435846B1 (ko) * 2008-10-30 2014-08-29 엘지전자 주식회사 다중안테나를 갖는 무선 통신 시스템에서 간섭 제어 방법
JP5322327B2 (ja) * 2009-01-05 2013-10-23 マーベル ワールド トレード リミテッド Mimo通信システムのコードブックのプリコーディング
US8385441B2 (en) * 2009-01-06 2013-02-26 Marvell World Trade Ltd. Efficient MIMO transmission schemes
US8611447B1 (en) 2009-02-27 2013-12-17 Marvell International Ltd. Feedback and user scheduling for multi-user multiple input multiple output (MU-MIMO) system
US8238483B2 (en) 2009-02-27 2012-08-07 Marvell World Trade Ltd. Signaling of dedicated reference signal (DRS) precoding granularity
US8699528B2 (en) * 2009-02-27 2014-04-15 Marvell World Trade Ltd. Systems and methods for communication using dedicated reference signal (DRS)
KR101559799B1 (ko) 2009-03-04 2015-10-26 엘지전자 주식회사 무선 통신 시스템에서 CoMP 동작 수행 및 피드백 정보 전송 방법
US8401480B2 (en) * 2009-03-04 2013-03-19 Lg Electronics Inc. Method for performing CoMP operation and transmitting feedback information in a wireless communication system
KR101055573B1 (ko) * 2009-03-16 2011-08-08 주식회사 팬택 다중 사용자, 다중 안테나 무선 송출 시스템에서의 프리 코딩 장치
US8830918B2 (en) 2009-03-16 2014-09-09 Interdigital Patent Holdings, Inc. Method and apparatus for performing uplink transmit diversity
EP2417780B1 (en) * 2009-04-06 2019-05-08 Marvell World Trade Ltd. Improved feedback strategies for multi-user mimo communication systems
CN101867536B (zh) * 2009-04-15 2013-11-06 华为技术有限公司 一种多播广播业务预编码方法、基站及终端
JP5607143B2 (ja) * 2009-04-21 2014-10-15 マーベル ワールド トレード リミテッド 通信方法、通信装置、携帯通信端末、チップセット、および、通信システム
US8705510B2 (en) 2009-04-22 2014-04-22 Lg Electronics Inc. Method for transmitting feedback information and data using a precoding codebook for multicell cooperative communication in a wireless communication system
CN101540631B (zh) * 2009-04-27 2014-03-12 中兴通讯股份有限公司 测量参考信号的多天线发送方法及装置
KR101055685B1 (ko) * 2009-05-13 2011-08-09 충북대학교 산학협력단 코드북 기반의 동이득 전송 기법을 적용한 단일 캐리어 주파수 분할 다중접속 시스템
KR20100138260A (ko) * 2009-06-24 2010-12-31 주식회사 팬택 무선통신 시스템에서 전력 할당방법 및 그 장치, 이를 적용한 송수신장치 신호전송
US8699610B2 (en) * 2009-07-30 2014-04-15 Lg Electronics Inc. Feedback scheme for multi-cell interference mitigation consideration legacy mobile users
TWI377802B (en) * 2009-08-11 2012-11-21 Ind Tech Res Inst Codebook searching apparatus and method thereof
BR112012003477A2 (pt) * 2009-08-17 2017-05-23 Alcatel Lucent "método para manter coerência de um canal de pré-codificação em uma rede de comunicação e aparelho associado."
KR101336690B1 (ko) * 2009-08-18 2013-12-04 알까뗄 루슨트 코드북을 구성하기 위한 방법 및 디바이스, 프리코딩을 위한 방법, 디바이스, 및 시스템
US8411783B2 (en) * 2009-09-23 2013-04-02 Intel Corporation Method of identifying a precoding matrix corresponding to a wireless network channel and method of approximating a capacity of a wireless network channel in a wireless network
WO2011043497A1 (en) 2009-10-06 2011-04-14 Pantech Co., Ltd. Precoding and feedback channel information in wireless communication system
US8675794B1 (en) 2009-10-13 2014-03-18 Marvell International Ltd. Efficient estimation of feedback for modulation and coding scheme (MCS) selection
US8917796B1 (en) 2009-10-19 2014-12-23 Marvell International Ltd. Transmission-mode-aware rate matching in MIMO signal generation
US8325860B2 (en) * 2009-11-09 2012-12-04 Marvell World Trade Ltd. Asymmetrical feedback for coordinated transmission systems
CN102783120B (zh) * 2009-12-17 2015-07-01 马维尔国际贸易有限公司 用于交叉极化天线的mimo反馈方案
US8817904B2 (en) 2009-12-30 2014-08-26 Telecom Italia S.P.A. Method for selecting a precoding matrix in a multiple input multiple output (“MIMO”) system
KR101723259B1 (ko) 2010-02-02 2017-04-05 엘지전자 주식회사 무선 네트워크에서 간섭 정렬을 위한 피드백 방법
WO2011097971A1 (zh) * 2010-02-09 2011-08-18 富士通株式会社 生成预编码矩阵码书的方法和装置及预编码矩阵指定方法
JP5258002B2 (ja) 2010-02-10 2013-08-07 マーベル ワールド トレード リミテッド Mimo通信システムにおける装置、移動通信端末、チップセット、およびその方法
KR101276855B1 (ko) * 2010-03-08 2013-06-18 엘지전자 주식회사 프리코딩 행렬 정보 전송방법 및 사용자기기와, 프리코딩 행렬 구성방법 및 기지국
US8687741B1 (en) 2010-03-29 2014-04-01 Marvell International Ltd. Scoring hypotheses in LTE cell search
US8767681B2 (en) 2010-04-07 2014-07-01 Telefonaktiebolaget Lm Ericsson (Publ) Parameterized codebook subsets for use with precoding MIMO transmissions
KR101843019B1 (ko) * 2010-04-30 2018-03-29 삼성전자주식회사 여러 리포팅 모드를 지원하는 다중 입출력 통신 시스템
US8615052B2 (en) 2010-10-06 2013-12-24 Marvell World Trade Ltd. Enhanced channel feedback for multi-user MIMO
JP2012100254A (ja) 2010-10-06 2012-05-24 Marvell World Trade Ltd Pucchフィードバックのためのコードブックサブサンプリング
CN102082639B (zh) * 2010-11-08 2014-01-29 大唐移动通信设备有限公司 信道状态信息的传输方法和设备
KR101752950B1 (ko) * 2011-01-07 2017-07-11 인터디지탈 패튼 홀딩스, 인크 전송 다이버시티 단말기들을 위한 전송 파라미터의 선택
US9048970B1 (en) 2011-01-14 2015-06-02 Marvell International Ltd. Feedback for cooperative multipoint transmission systems
US8730989B2 (en) * 2011-02-11 2014-05-20 Interdigital Patent Holdings, Inc. Method and apparatus for closed loop transmit diversity transmission initial access
US8861391B1 (en) 2011-03-02 2014-10-14 Marvell International Ltd. Channel feedback for TDM scheduling in heterogeneous networks having multiple cell classes
CN103548284B (zh) 2011-03-31 2017-07-21 马维尔国际贸易有限公司 用于协作多点传输的信道反馈
US8743988B2 (en) 2011-07-29 2014-06-03 Telefonaktiebolaget Lm Ericsson (Publ) Transmission mode adaptation in a wireless network
JP5935262B2 (ja) * 2011-08-17 2016-06-15 富士通株式会社 無線装置及び通信制御プログラム
US8923427B2 (en) 2011-11-07 2014-12-30 Marvell World Trade Ltd. Codebook sub-sampling for frequency-selective precoding feedback
WO2013068915A2 (en) 2011-11-07 2013-05-16 Marvell World Trade Ltd. Precoding feedback for cross-polarized antennas with magnitude information
KR20140074369A (ko) * 2011-11-08 2014-06-17 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) 비디오 코딩의 타일 크기
US9031597B2 (en) 2011-11-10 2015-05-12 Marvell World Trade Ltd. Differential CQI encoding for cooperative multipoint feedback
US9220087B1 (en) 2011-12-08 2015-12-22 Marvell International Ltd. Dynamic point selection with combined PUCCH/PUSCH feedback
US8902842B1 (en) 2012-01-11 2014-12-02 Marvell International Ltd Control signaling and resource mapping for coordinated transmission
CN103312397A (zh) * 2012-03-16 2013-09-18 华为技术有限公司 一种预编码方法、系统和装置
US9143951B2 (en) 2012-04-27 2015-09-22 Marvell World Trade Ltd. Method and system for coordinated multipoint (CoMP) communication between base-stations and mobile communication terminals
US9344162B2 (en) 2012-04-27 2016-05-17 The Board Of Trustees Of The Leland Stanford Junior University Exploiting spatial degrees of freedom in multiple input multiple output (MIMO) radio systems
US10432272B1 (en) 2018-11-05 2019-10-01 XCOM Labs, Inc. Variable multiple-input multiple-output downlink user equipment
US10659112B1 (en) 2018-11-05 2020-05-19 XCOM Labs, Inc. User equipment assisted multiple-input multiple-output downlink configuration
US10756860B2 (en) 2018-11-05 2020-08-25 XCOM Labs, Inc. Distributed multiple-input multiple-output downlink configuration
US10812216B2 (en) 2018-11-05 2020-10-20 XCOM Labs, Inc. Cooperative multiple-input multiple-output downlink scheduling
CN113169764A (zh) 2018-11-27 2021-07-23 艾斯康实验室公司 非相干协作式多输入多输出通信
US10756795B2 (en) 2018-12-18 2020-08-25 XCOM Labs, Inc. User equipment with cellular link and peer-to-peer link
US11063645B2 (en) 2018-12-18 2021-07-13 XCOM Labs, Inc. Methods of wirelessly communicating with a group of devices
US11330649B2 (en) 2019-01-25 2022-05-10 XCOM Labs, Inc. Methods and systems of multi-link peer-to-peer communications
US10756767B1 (en) 2019-02-05 2020-08-25 XCOM Labs, Inc. User equipment for wirelessly communicating cellular signal with another user equipment
US10756782B1 (en) 2019-04-26 2020-08-25 XCOM Labs, Inc. Uplink active set management for multiple-input multiple-output communications
US11032841B2 (en) 2019-04-26 2021-06-08 XCOM Labs, Inc. Downlink active set management for multiple-input multiple-output communications
US10686502B1 (en) 2019-04-29 2020-06-16 XCOM Labs, Inc. Downlink user equipment selection
US10735057B1 (en) 2019-04-29 2020-08-04 XCOM Labs, Inc. Uplink user equipment selection
US11411778B2 (en) 2019-07-12 2022-08-09 XCOM Labs, Inc. Time-division duplex multiple input multiple output calibration
US11411779B2 (en) 2020-03-31 2022-08-09 XCOM Labs, Inc. Reference signal channel estimation
CN115699605A (zh) 2020-05-26 2023-02-03 艾斯康实验室公司 干扰感知波束成形
CA3195885A1 (en) 2020-10-19 2022-04-28 XCOM Labs, Inc. Reference signal for wireless communication systems
WO2022093988A1 (en) 2020-10-30 2022-05-05 XCOM Labs, Inc. Clustering and/or rate selection in multiple-input multiple-output communication systems

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7286855B2 (en) * 1995-02-22 2007-10-23 The Board Of Trustees Of The Leland Stanford Jr. University Method and apparatus for adaptive transmission beam forming in a wireless communication system
US6859503B2 (en) * 2001-04-07 2005-02-22 Motorola, Inc. Method and system in a transceiver for controlling a multiple-input, multiple-output communications channel
US7260153B2 (en) * 2002-09-09 2007-08-21 Mimopro Ltd. Multi input multi output wireless communication method and apparatus providing extended range and extended rate across imperfectly estimated channels
US6927728B2 (en) * 2003-03-13 2005-08-09 Motorola, Inc. Method and apparatus for multi-antenna transmission
CN100452688C (zh) * 2003-06-27 2009-01-14 上海贝尔阿尔卡特股份有限公司 基于信道信息二阶统计的自适应调制和编码的方法及装置
CN1973471B (zh) * 2004-04-01 2011-06-08 北方电讯网络有限公司 空时块编码系统和方法
US7813458B2 (en) * 2004-08-20 2010-10-12 Nokia Corporation System and method for precoding in a multiple-input multiple-output (MIMO) system
KR100950644B1 (ko) * 2005-03-04 2010-04-01 삼성전자주식회사 다중사용자 다중입출력 시스템의 피드백 방법

Also Published As

Publication number Publication date
EP2039046A2 (en) 2009-03-25
KR20080059672A (ko) 2008-06-30
US20070165738A1 (en) 2007-07-19
CN101346923A (zh) 2009-01-14
WO2007051192A8 (en) 2009-08-13
RU2388142C2 (ru) 2010-04-27
KR100977434B1 (ko) 2010-08-24
WO2007051192A2 (en) 2007-05-03
JP2009514460A (ja) 2009-04-02
RU2008121171A (ru) 2009-12-10
CA2627388A1 (en) 2007-05-03
BRPI0617866A2 (pt) 2011-08-09

Similar Documents

Publication Publication Date Title
TW200733662A (en) A method and apparatus for pre-coding for a MIMO system
MY145297A (en) Systems and methods for beamforming in multi-input multi-output communication systems
TW200635269A (en) Rate adaptation using semi-open loop technique
MY150252A (en) A method and apparatus for pre-coding frequency division duplexing system
EP2030393A4 (en) SIGNAL GENERATION BY PRECODING BASED ON PHASE SHIFTING
TW200709602A (en) Method and apparatus for optimum selection of MIMO and interference cancellation
MX2010001793A (es) Aparato y metodo para determinar una matriz de precodificacion en un sistema de multiple entrada-multiple salida (mimo).
GB2433862A (en) Multiple antenna multicarrier communication system and method with reduced mobile-station processing
TW200616365A (en) Continuous beamforming for a MIMO-OFDM system
AR072414A1 (es) Metodo y aparato para senalizacion de vectores de precodificacion
TW200718065A (en) Method and apparatus for providing antenna diversity in a wireless communication system
TW200944024A (en) Methods and apparatus for controlling transmission of a base station
GB2439892A (en) Methods and apparatus for beamforming training symbols in wireless multiple input-multiple systems
TW200714092A (en) CQI and rank prediction for list sphere decoding and ML MIMO receivers
WO2011005048A3 (en) Mobile station, base station, and operation method of mobile station
TW200703969A (en) Systems and methods for beamforming feedback in multi antenna communication systems
TWI371184B (en) Method of transmitting data in multiple antenna system
WO2011129583A3 (ko) 다중 안테나 지원 무선 통신 시스템에서 효율적인 피드백 방법 및 장치
MY153494A (en) Pre-coding method for spatial multiplexing in multiple input and output system
SG143262A1 (en) Data transmission with spatial spreading in a mimo communication system
WO2012008710A3 (ko) 무선 통신 시스템에서 코드북을 이용한 신호 송수신 방법 및 장치
MX2009004417A (es) Metodo y aparato para intercambiar libro de codigo en un sistema de comunicacion inalambrica de acceso multiple.
WO2010071369A3 (ko) 무선 통신 시스템에서 정보 전송 장치 및 방법
MX2010001795A (es) Formato de canal de control de enlace ascendente.
MY142223A (en) Systems and methods for beamforming and rate control in a multi-input multi-output communication systems