JP5427878B2 - Ｍｉｍｏシステムでコードブックを用いてフィードバックを行うフィードバック方法 - Google Patents

Ｍｉｍｏシステムでコードブックを用いてフィードバックを行うフィードバック方法 Download PDF

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Publication number
JP5427878B2
JP5427878B2 JP2011500712A JP2011500712A JP5427878B2 JP 5427878 B2 JP5427878 B2 JP 5427878B2 JP 2011500712 A JP2011500712 A JP 2011500712A JP 2011500712 A JP2011500712 A JP 2011500712A JP 5427878 B2 JP5427878 B2 JP 5427878B2
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Prior art keywords
mimo
codebook
mode
feedback
base station
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Expired - Fee Related
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JP2011500712A
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Japanese (ja)
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JP2011517524A5 (enExample
JP2011517524A (ja
Inventor
ウック ボン リー，
ジン ヨン チュン，
スン ホー パーク，
ムン イル リー，
ヒュン ソー コ，
ビン チュル イム，
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LG Electronics Inc
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LG Electronics Inc
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    • 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
    • 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
    • H04B7/06—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
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
    • 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
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H04B7/065—Variable contents, e.g. long-term or short-short

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)
JP2011500712A 2008-04-07 2009-04-06 Ｍｉｍｏシステムでコードブックを用いてフィードバックを行うフィードバック方法 Expired - Fee Related JP5427878B2 (ja)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
US4277808P 2008-04-07 2008-04-07
US61/042,778 2008-04-07
US5059108P 2008-05-05 2008-05-05
US61/050,591 2008-05-05
US7413208P 2008-06-19 2008-06-19
US61/074,132 2008-06-19
KR10-2008-0081244 2008-08-20
KR1020080081244A KR101537591B1 (ko) 2008-04-07 2008-08-20 Ｍｉｍｏ 시스템에서 모드 적응 방법
US15116109P 2009-02-09 2009-02-09
US61/151,161 2009-02-09
PCT/KR2009/001769 WO2009125956A1 (en) 2008-04-07 2009-04-06 Feedback method for performing a feedback by using a codebook in mimo system

Publications (3)

Publication Number Publication Date
JP2011517524A JP2011517524A (ja) 2011-06-09
JP2011517524A5 JP2011517524A5 (enExample) 2012-02-23
JP5427878B2 true JP5427878B2 (ja) 2014-02-26

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JP2011500712A Expired - Fee Related JP5427878B2 (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムでコードブックを用いてフィードバックを行うフィードバック方法
JP2011502869A Expired - Fee Related JP5567550B2 (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法
JP2011502868A Pending JP2011518491A (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法

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JP2011502869A Expired - Fee Related JP5567550B2 (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法
JP2011502868A Pending JP2011518491A (ja) 2008-04-07 2009-04-06 Ｍｉｍｏシステムにおけるモード適応方法

Country Status (7)

Country Link
US (4) US8045528B2 (enExample)
EP (3) EP2248278B1 (enExample)
JP (3) JP5427878B2 (enExample)
KR (1) KR101537591B1 (enExample)
CN (3) CN101981825A (enExample)
MY (1) MY154092A (enExample)
WO (3) WO2009125955A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0682229B2 (ja) 1991-01-11 1994-10-19 ミノルタ株式会社 静電潜像現像剤用キヤリア

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101543104B (zh) * 2007-02-02 2012-11-21 三菱电机株式会社 通信方法、基站、通信系统及移动终端
JP2010537597A (ja) * 2007-08-31 2010-12-02 富士通株式会社 フィードバック装置、フィードバック方法、スケジューリング装置及びスケジューリング方法
KR101537591B1 (ko) * 2008-04-07 2015-07-20 엘지전자 주식회사 Ｍｉｍｏ 시스템에서 모드 적응 방법
US8644288B2 (en) * 2008-07-31 2014-02-04 Motorola Mobility Llc Uplink spatial division multiple access (SDMA) user pairing and scheduling
GB2467303B (en) * 2008-08-07 2012-07-11 Icera Inc Feedback in a wireless communication system
WO2010061248A1 (en) * 2008-11-28 2010-06-03 Freescale Semiconductor, Inc. Allocation of communication channels
CN101902305B (zh) * 2009-05-25 2013-10-30 富士通株式会社 通信装置、通信方法和基站
EP2490345B1 (en) 2009-10-14 2019-04-17 LG Electronics Inc. Method and apparatus for mode switching between a multi-cell coordinated communication mode and a single-cell mimo communication mode
CN102640431A (zh) 2009-10-30 2012-08-15 诺基亚公司 支持有效的秩重配的信道反馈
JP5455096B2 (ja) * 2009-11-25 2014-03-26 エヌイーシー ヨーロッパ リミテッド セルラ無線システムの動作方法およびセルラ無線システム
US9379867B2 (en) 2009-12-30 2016-06-28 Samsung Electronics Co., Ltd. Apparatus and method for efficiently operating fast feedback channel in wireless communication system
CN101800628B (zh) * 2010-02-12 2015-09-16 中兴通讯股份有限公司 一种获取信道状态信息的方法和系统
US9059819B2 (en) * 2010-02-12 2015-06-16 Qualcomm Incorporated Flexible uplink control channel configuration
US20110305209A1 (en) * 2010-03-09 2011-12-15 Qualcomm Incorporated Rate adaptation for sdma
CN101807981B (zh) * 2010-04-02 2015-05-20 中兴通讯股份有限公司 码本使用的预处理方法及通讯系统
EP2553850B1 (en) 2010-04-02 2018-01-03 Koninklijke Philips N.V. A method for operating a secondary station by feeding back a single precoding indicator for single-user MIMO and multi-user MIMO
PT2556712T (pt) * 2010-04-05 2020-10-30 Nokia Technologies Oy Feedback de informação do estado do canal para entrada múltipla de ligação descendente aprimorada - operação de saída múltipla
GB2479377B (en) * 2010-04-07 2013-08-14 Toshiba Res Europ Ltd Dual indicator scheme for channel state information feedback
KR20130007635A (ko) * 2010-04-29 2013-01-18 후지쯔 가부시끼가이샤 프리코딩 매트릭스 정보를 피드백하기 위한 방법 및 그의 이동국
JP5324526B2 (ja) * 2010-06-18 2013-10-23 シャープ株式会社 端末装置、基地局装置、通信システム、および処理方法
KR20110138742A (ko) * 2010-06-21 2011-12-28 주식회사 팬택 장치의 채널정보 전송방법, 그 장치, 기지국, 그 기지국의 전송방법
US8891652B2 (en) * 2010-06-24 2014-11-18 Qualcomm Incorporated Structured MIMO codebook
AU2011271829B2 (en) * 2010-07-01 2014-05-29 Lg Electronics Inc. Method and apparatus for transceiving a MIMO packet in a wireless LAN system
KR20120003781A (ko) * 2010-07-05 2012-01-11 주식회사 팬택 송신장치 및 그 통신방법, 수신장치, 그 통신방법
US8547955B2 (en) * 2010-07-28 2013-10-01 Intel Corporation Feedback scheme for MU-MIMO
US9509391B2 (en) 2010-09-08 2016-11-29 Qualcomm Incorporated Sounding feedback schemes for very high throughput wireless systems
US9042841B2 (en) 2010-09-17 2015-05-26 Samsung Electronics Co., Ltd. System and method for PUCCH subband feedback signaling in a wireless network
USRE47631E1 (en) 2010-09-17 2019-10-01 Samsung Electronics Co., Ltd. System and method for PUCCH subband feedback signaling in a wireless network
JP5666871B2 (ja) * 2010-10-12 2015-02-12 シャープ株式会社 無線通信システム、基地局装置、無線通信方法
CN102457361B (zh) * 2010-10-27 2014-09-10 中兴通讯股份有限公司 一种支持多种发射方式的方法和基站
WO2012075387A1 (en) * 2010-12-02 2012-06-07 Interdigital Patent Holdings, Inc. Systems and methods for improving channel quality indication feedback accuracy in wireless communication using interference prediction
KR101684925B1 (ko) * 2010-12-21 2016-12-20 삼성전자주식회사 기지국 및 단말의 통신 방법
CN102624497B (zh) * 2011-01-30 2016-05-25 华为技术有限公司 码本生成方式的确定方法和装置
JP6026082B2 (ja) * 2011-04-05 2016-11-16 シャープ株式会社 端末、基地局、通信方法および集積回路
US9319118B2 (en) 2011-04-29 2016-04-19 Yuan Zhu Technology for CSI feedback in a MIMO communication system
US8761129B2 (en) * 2011-04-29 2014-06-24 Nec Laboratories America, Inc. Enhancement of download multi-user multiple-input multiple-output wireless communications
US20130288686A1 (en) 2011-04-29 2013-10-31 Joey Chou Techniques to manage energy savings for interoperable radio access technology networks
CN102664660B (zh) * 2012-04-12 2014-12-10 电信科学技术研究院 一种传输方式的选择方法和设备
JP5899043B2 (ja) 2012-05-07 2016-04-06 株式会社Ｎｔｔドコモ コードブック適合方法、無線基地局装置及びユーザ装置
US8885752B2 (en) 2012-07-27 2014-11-11 Intel Corporation Method and apparatus for feedback in 3D MIMO wireless systems
US9363686B2 (en) 2012-12-06 2016-06-07 Qualcomm Incorporated Method and system for unified rate adaptation for SU-BF and MU-MIMO operation
US9112737B2 (en) * 2013-03-06 2015-08-18 Qualcomm Incorporated Systems and methods for determining a channel variation metric
US9838184B2 (en) * 2013-04-08 2017-12-05 Lg Electronics Inc. Method and apparatus for reporting channel state information for fractional beamforming in a wireless communication system
WO2014178616A1 (ko) * 2013-04-29 2014-11-06 엘지전자 주식회사 무선 통신 시스템에서 채널상태정보 전송 방법 및 장치
US9787376B2 (en) 2014-01-06 2017-10-10 Intel IP Corporation Systems, methods, and devices for hybrid full-dimensional multiple-input multiple-output
WO2016036205A2 (ko) * 2014-09-04 2016-03-10 삼성전자주식회사 무선 통신 시스템에서 피드백 정보 송신을 위한 장치 및 방법
KR102487525B1 (ko) * 2014-09-04 2023-01-12 삼성전자주식회사 무선 통신 시스템에서 피드백 정보 송신을 위한 장치 및 방법
US9847230B2 (en) * 2015-06-09 2017-12-19 The Charles Stark Draper Laboratory, Inc. Method and apparatus for using universal cavity wafer in wafer level packaging
US20170222710A1 (en) * 2016-01-28 2017-08-03 Qualcomm Incorporated Trigger frame for changing modes of operation
GB2548335B (en) * 2016-03-08 2020-07-01 Cambium Networks Ltd Method and apparatus for channel sounding for a MU-MIMO wireless communication network
EP3301824B1 (en) * 2016-09-28 2020-06-17 Intel IP Corporation Communication network component and method for requesting channel information
US20190007180A1 (en) * 2017-06-30 2019-01-03 Qualcomm Incorporated Apparatus and method for sub-channel selection based on a number of electronic devices of a wireless network
EP3553968A1 (en) * 2018-04-13 2019-10-16 Peraso Technologies Inc. Single-carrier wideband beamforming method and system
US10849143B2 (en) 2019-03-12 2020-11-24 Cisco Technology, Inc. Machine learning (ML) based client behavior prediction for multi-user (MU) scheduler optimization
US12156121B1 (en) * 2019-03-20 2024-11-26 Sprint Spectrum Lp Performing MU-MIMO in wireless communication networks

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6862271B2 (en) 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
EP1508992A3 (en) * 2003-08-18 2008-05-21 Samsung Electronics Co., Ltd. Apparatus and method for scheduling resource in a multiuser MIMO radio communication system
US8249518B2 (en) * 2003-12-29 2012-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Network controlled feedback for MIMO systems
CN100539462C (zh) * 2004-04-05 2009-09-09 北方电讯网络有限公司 用于支持正交频分复用应用中的多输入多输出传输的方法
CN1691539A (zh) 2004-04-30 2005-11-02 皇家飞利浦电子股份有限公司 用于多入多出无线通信系统的通用多入多出－联合检测方法和装置
CN1969473B (zh) * 2004-06-14 2011-02-09 三星电子株式会社 多输入多输出移动通信系统中控制传输模式的装置和方法
US8116262B2 (en) * 2004-06-22 2012-02-14 Rockstar Bidco Lp Methods and systems for enabling feedback in wireless communication networks
KR101161873B1 (ko) 2004-09-07 2012-07-03 더 보드 오브 리전츠 오브 더 유니버시티 오브 텍사스 시스템 적응적 전송모드 전환 방식을 이용한 다중입출력 통신시스템
AU2005296409B2 (en) * 2004-10-18 2009-10-29 Lg Electronics Inc. A method of transmitting feedback information in an orthogononal frequency division multiplexing (OFDM)/OFDM access (OFDMA) mobile communication system
KR101073909B1 (ko) 2005-03-04 2011-10-17 엘지전자 주식회사 광대역 무선접속 시스템에서의 ｍｉｍｏ 모드 피드백 방법
WO2006117665A1 (en) * 2005-05-04 2006-11-09 Nortel Networks Limited Wireless feedback system and method
KR20060130806A (ko) * 2005-06-08 2006-12-20 삼성전자주식회사 코드북 기반 폐루프 방식의 다중 송수신 안테나 시스템에서송수신 장치 및 방법
US8116267B2 (en) * 2006-02-09 2012-02-14 Samsung Electronics Co., Ltd. Method and system for scheduling users based on user-determined ranks in a MIMO system
KR100819285B1 (ko) * 2006-03-16 2008-04-02 삼성전자주식회사 다중 사용자를 지원하는 다중 안테나 시스템에서의 피드 백 정보 송/수신방법 및 그 시스템
US8059609B2 (en) * 2006-03-20 2011-11-15 Qualcomm Incorporated Resource allocation to support single-user and multi-user MIMO transmission
KR101269201B1 (ko) 2006-06-30 2013-05-28 삼성전자주식회사 폐 루프 방식의 다중 안테나 시스템에서 데이터송/수신장치 및 방법
US7941186B2 (en) * 2006-07-25 2011-05-10 Samsung Electronics Co., Ltd. Apparatus and method for scheduling multiuser/single user in multiple input multiple output (MIMO) system
US20080037669A1 (en) 2006-08-11 2008-02-14 Interdigital Technology Corporation Wireless communication method and system for indexing codebook and codeword feedback
JP5006001B2 (ja) 2006-08-22 2012-08-22 株式会社エヌ・ティ・ティ・ドコモ 下りリンクｍｉｍｏ伝送制御方法および基地局装置
KR100938070B1 (ko) 2006-08-31 2010-01-21 삼성전자주식회사 다중 안테나 시스템에서의 데이터 송/수신장치 및 방법과이를 제공하는 시스템
KR100938088B1 (ko) * 2006-11-01 2010-01-21 삼성전자주식회사 무선 패킷 데이터 통신 시스템에서의 피드백 정보 송수신방법 및 장치
US8073069B2 (en) * 2007-01-05 2011-12-06 Apple Inc. Multi-user MIMO-SDMA for finite rate feedback systems
WO2008118067A2 (en) * 2007-03-26 2008-10-02 Telefonaktiebolaget Lm Ericsson (Publ) Preparation phase for switching between su-mimo and mu-mimo
US8498356B2 (en) * 2007-04-13 2013-07-30 Samsung Electronics Co., Ltd. Apparatus and method of generating codebook for multiple input multiple output communication system
US20080267056A1 (en) * 2007-04-26 2008-10-30 Motorola, Inc. Method and apparatus for performing multi-antenna transmission
US8687561B2 (en) * 2007-05-04 2014-04-01 Motorola Mobility Llc Method and system for link adaptation using metric feedback
US7649831B2 (en) 2007-05-30 2010-01-19 Samsung Electronics Co., Ltd. Multi-user MIMO feedback and transmission in a wireless communication system
US8325839B2 (en) * 2007-06-26 2012-12-04 Samsung Electronics Co., Ltd. Simple MIMO precoding codebook design for a MIMO wireless communications system
HUE046193T2 (hu) * 2007-06-27 2020-02-28 Unwired Planet International Ltd Eljárás és elrendezések telekommunikációs rendszerben, amely támogatja MU-MIMO-t és SU-MIMO-t
KR20090013140A (ko) * 2007-07-31 2009-02-04 삼성전자주식회사 무선 통신 시스템에서 다수의 다중 입력 다중 출력 모드를지원하는 장치 및 방법
US20090046801A1 (en) * 2007-08-14 2009-02-19 Interdigital Technology Corporation Method and apparatus for creating a multi-user mimo codebook using a single user mimo codebook
JP2010537597A (ja) * 2007-08-31 2010-12-02 富士通株式会社 フィードバック装置、フィードバック方法、スケジューリング装置及びスケジューリング方法
CN101485103A (zh) * 2007-08-31 2009-07-15 富士通株式会社 无线通信系统和无线通信方法
US8254486B2 (en) * 2007-09-28 2012-08-28 Intel Corporation Unified closed loop SU/MU-MIMO signaling and codebook design
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
KR101537591B1 (ko) * 2008-04-07 2015-07-20 엘지전자 주식회사 Ｍｉｍｏ 시스템에서 모드 적응 방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0682229B2 (ja) 1991-01-11 1994-10-19 ミノルタ株式会社 静電潜像現像剤用キヤリア

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