JP5112497B2 - 無線通信装置と方法 - Google Patents
無線通信装置と方法 Download PDFInfo
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- JP5112497B2 JP5112497B2 JP2010249562A JP2010249562A JP5112497B2 JP 5112497 B2 JP5112497 B2 JP 5112497B2 JP 2010249562 A JP2010249562 A JP 2010249562A JP 2010249562 A JP2010249562 A JP 2010249562A JP 5112497 B2 JP5112497 B2 JP 5112497B2
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- 238000004891 communication Methods 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 28
- 239000011159 matrix material Substances 0.000 claims description 73
- 239000013598 vector Substances 0.000 claims description 48
- 238000000354 decomposition reaction Methods 0.000 claims description 17
- 229940050561 matrix product Drugs 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 11
- 238000004590 computer program Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 8
- 238000013139 quantization Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 101150069124 RAN1 gene Proteins 0.000 description 3
- 101100355633 Salmo salar ran gene Proteins 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- H04B7/0426—Power distribution
- H04B7/0434—Power distribution using multiple eigenmodes
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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
- H04B7/06—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
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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
- H04B7/06—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
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0658—Feedback reduction
- H04B7/0663—Feedback reduction using vector or matrix manipulations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
Description
np−p (1)
の係数をp個のベクトルを表わすためにエンコーディングしなければならない。
Claims (11)
- 通信チャネルを通して送信するデータを圧縮する方法であって、該データは反対方向の前記通信チャネルのチャネル条件を表わし、該方法は、チャネル行列から算出される幾つかの正規直交ベクトルを含む行列に前記データを整えること、前記正規直交行列のサブセットの特異値分解を判定し、左特異ベクトルの行列と右特異ベクトルの行列を夫々生成すること、および、前記特異値分解に含まれない残余の正規直交ベクトルに、前記右特異ベクトルの行列と前記左特異ベクトルの行列との行列積を右乗算することにより圧縮データの行列を生成することを含み、前記サブセットにおけるベクトルの数は、該ベクトルの次数に等しい、方法。
- 前記圧縮データを送信する方向とは反対方向における通信チャネルのチャネル条件を表わすチャネル行列から前記正規直交ベクトルを算出することを含む、請求項1に従う方法。
- 前記通信チャネルを通して送信するデータは、チャネル状態情報(CSI)フィードバックスキームにおけるチャネル固有ベクトルセットの表現であって、1つのベクトル当たりでn−p個(n≧p)の係数を用いることにより、p個のn次元固有ベクトルを共同でエンコーディングすること、を含む請求項1または2に従う方法。
- 前記エンコーディングは、n×p正規直交行列に固有ベクトルのセットを整えること、前記行列の上部p×pブロックの特異値分解(SVD)を求めること、および、下部の(n−p)×p行列ブロックに前記SVDの出力を乗算して、チャネル表現を判定することを含む、請求項4に従う方法。
- 請求項1または2に記載の方法を逆に行うことにより、(n−p)×pブロックから正規直交n×p行列を再構成することを含む、チャネル表現をデコーディングする方法。
- チャネル状態情報を得ることが可能な信号を受信し、前記チャネル状態情報を伝達する信号を放射する無線通信装置であって、請求項1または2に従って前記チャネル状態情報を圧縮するチャネル状態情報圧縮手段を具備する無線通信装置。
- 算出されたチャネル状態情報を伝達する信号を受信し、請求項3または請求項6に従って前記信号を伸長する無線通信装置。
- 受信したチャネル状態情報に基づいてプリコーディング配列を生成する、請求項8に従う無線通信装置。
- 請求項1乃至6のいずれかに記載の方法を行なうように汎用コンピュータ通信デバイスを構成するコンピュータ実行可能命令を記憶するコンピュータ可読媒体。
- 請求項8または請求項9に従う無線通信装置と通信する、請求項7に従う無線通信装置を具備する無線通信システム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0919533.0 | 2009-11-06 | ||
GB0919533.0A GB2475098B (en) | 2009-11-06 | 2009-11-06 | Compression and decompression of channel state information in a wireless communication network |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011147112A JP2011147112A (ja) | 2011-07-28 |
JP5112497B2 true JP5112497B2 (ja) | 2013-01-09 |
Family
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010249562A Active JP5112497B2 (ja) | 2009-11-06 | 2010-11-08 | 無線通信装置と方法 |
Country Status (3)
Country | Link |
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US (1) | US8737518B2 (ja) |
JP (1) | JP5112497B2 (ja) |
GB (1) | GB2475098B (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8654877B2 (en) * | 2011-07-07 | 2014-02-18 | Cambridge Silicon Radio Limited | Multiple-input, multiple-output telecommunications schemes |
KR101680212B1 (ko) * | 2011-07-18 | 2016-11-28 | 주식회사 케이티 | 단말의 채널 상태 정보 전송 방법, 그 단말, 전송단의 채널 상태 정보 수신 방법, 및 그 전송단 |
ES2650841T3 (es) | 2012-05-18 | 2018-01-22 | Telefónica S.A. | Un método y un sistema para la notificación de CSI en redes de LTE de acuerdo con la movilidad del equipo de usuario |
JP6023673B2 (ja) * | 2012-12-18 | 2016-11-09 | 日本電信電話株式会社 | 無線通信システム、及びウエイト算出方法 |
JP6213137B2 (ja) * | 2013-10-17 | 2017-10-18 | 富士通株式会社 | 移動局、及び受信品質測定方法 |
US10103798B2 (en) * | 2016-09-14 | 2018-10-16 | Samsung Electronics Co., Ltd. | Method and apparatus to enable channel compression in advanced wireless communication systems |
US10560288B2 (en) | 2018-01-12 | 2020-02-11 | Samsung Electronics Co., Ltd | Apparatus and method of non-iterative singular-value decomposition |
US10326511B1 (en) | 2018-01-12 | 2019-06-18 | Samsung Electronics Co., Ltd | Apparatus and method of non-iterative singular-value decomposition |
CN110557176B (zh) | 2018-06-01 | 2022-08-02 | 中兴通讯股份有限公司 | 信息反馈方法、终端、基站、存储介质、电子设备 |
CN110535497B (zh) * | 2018-08-10 | 2022-07-19 | 中兴通讯股份有限公司 | Csi发送、接收方法及其装置、通信节点及存储介质 |
WO2020150936A1 (en) * | 2019-01-23 | 2020-07-30 | Qualcomm Incorporated | Precoder matrix quantization for compressed csi feedback |
CN113115305B (zh) * | 2021-01-28 | 2022-11-25 | 西安电子科技大学 | 一种基于免疫编码的干扰管理和安全传输方法及系统 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US6771706B2 (en) * | 2001-03-23 | 2004-08-03 | Qualcomm Incorporated | Method and apparatus for utilizing channel state information in a wireless communication system |
US7327800B2 (en) * | 2002-05-24 | 2008-02-05 | Vecima Networks Inc. | System and method for data detection in wireless communication systems |
JP4350491B2 (ja) | 2002-12-05 | 2009-10-21 | パナソニック株式会社 | 無線通信システム、無線通信方法、及び無線通信装置 |
US7492829B2 (en) | 2004-09-10 | 2009-02-17 | Intel Corporation | Closed loop feedback in MIMO systems |
US7917176B2 (en) * | 2006-02-14 | 2011-03-29 | Nec Laboratories America, Inc. | Structured codebook and successive beamforming for multiple-antenna systems |
US7778599B2 (en) * | 2006-05-01 | 2010-08-17 | Intel Corporation | Aggregated channel feedback |
US8385451B2 (en) * | 2006-06-08 | 2013-02-26 | Interdigital Technology Corporation | Method and apparatus for improved spatial temporal turbo channel coding (STTCC) using eigen-beamforming |
US8233556B2 (en) * | 2006-07-19 | 2012-07-31 | Texas Instruments Incorporated | Reduced feedback transmit beamforming |
US8626104B2 (en) * | 2006-09-28 | 2014-01-07 | Apple Inc. | Generalized codebook design method for limited feedback systems |
US8073069B2 (en) * | 2007-01-05 | 2011-12-06 | Apple Inc. | Multi-user MIMO-SDMA for finite rate feedback systems |
EP1995979B1 (en) | 2007-05-23 | 2009-06-03 | NTT DoCoMo, Inc. | Subchannel allocation apparatus and corresponding method |
US8179775B2 (en) * | 2007-08-14 | 2012-05-15 | Texas Instruments Incorporated | Precoding matrix feedback processes, circuits and systems |
US8254359B2 (en) | 2007-12-21 | 2012-08-28 | Intel Corporation | Recursive reduction of channel state feedback |
JP4561868B2 (ja) * | 2008-05-02 | 2010-10-13 | ソニー株式会社 | 無線通信装置、無線通信方法、コンピュータプログラム及び無線通信システム |
US8737504B2 (en) * | 2009-10-05 | 2014-05-27 | Samsung Electronics Co., Ltd. | Method and system for feedback of channel information |
-
2009
- 2009-11-06 GB GB0919533.0A patent/GB2475098B/en not_active Expired - Fee Related
-
2010
- 2010-11-05 US US12/940,329 patent/US8737518B2/en active Active
- 2010-11-08 JP JP2010249562A patent/JP5112497B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
GB2475098A (en) | 2011-05-11 |
US8737518B2 (en) | 2014-05-27 |
GB2475098B (en) | 2012-09-05 |
US20110111747A1 (en) | 2011-05-12 |
JP2011147112A (ja) | 2011-07-28 |
GB0919533D0 (en) | 2009-12-23 |
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