JP2013522981A - チャネル状態情報フィードバック方法とシステム - Google Patents
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- 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
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- 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
- H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
- H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
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- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3084—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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- 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
- H04B7/0478—Special codebook structures directed to feedback optimisation
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- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- 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
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
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- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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Abstract
Description
データ送信端とデータ受信端に同じコードブック空間を配置すること、
前記データ受信端は前記コードブック空間からチャネルにマッチしたコードワードを選択し、且つ該コードワードが対応する番号を前記データ送信端に送信すること、及び、
前記データ送信端は前記番号に基づき、ローカルで設定したコードブック空間から相応するコードワードを抽出し、チャネル状態情報を取得することを含む。
モデル
行列
行列
行列
行列
モデル
モデル
前記データ送信端は、前記データ受信端と同じコードブック空間を配置し、前記データ受信端が送信するコードワードの番号を受信し、且つ前記番号に基づき、ローカルで設定したコードブック空間から相応するコードワードを抽出し、チャネル状態情報を取得するように設置され、
前記データ受信端は、前記データ送信端と同じコードブック空間を配置し、前記コードブック空間からチャネルにマッチしたコードワードを選択し、且つ該コードワードが対応する番号を前記データ送信端に送信するように設置される。
前記チャネルのランクが1である時、
前記チャネルのランクが1である時、
本ステップにおいて、データ送信端とデータ受信端に同じコードブック空間を配置し、配置原理が同じであり、具体的には、図2に示すように、以下のステップ201を含む。
その中に、
上記モデルが形成したコードワードはコードブック空間を構成できる。
チャネル行列の特性から分析すると、発信端が+/−45度二重偏波である時、チャネル行列Hに対し、
上記データ送信端は、上記データ受信端と同じコードブック空間を配置し、上記データ受信端が送信するコードワードの番号を受信し、且つ上記番号に基づき、ローカルで設定したコードブック空間から相応するコードワードを抽出し、チャネル状態情報を取得するように設置され、
上記データ受信端は、上記データ送信端と同じコードブック空間を配置し、上記コードブック空間からチャネルにマッチしたコードワードを選択し、且つ該コードワードが対応する番号を上記データ送信端に送信するように設置される。
上記チャネルのランクが1である時、
上記チャネルのランクが1である時、
Claims (15)
- チャネル状態情報フィードバック方法であって、
データ送信端とデータ受信端に同じコードブック空間を配置することと、
前記データ受信端は前記コードブック空間からチャネルにマッチしたコードワードを選択し、且つ該コードワードが対応する番号を前記データ送信端に送信することと、
前記データ送信端は前記番号に基づき、ローカルで配置したコードブック空間から相応するコードワードを抽出し、チャネル状態情報を取得することとを含むチャネル状態情報フィードバック方法。 - チャネル状態情報フィードバックシステムであって、データ送信端とデータ受信端を備え、
前記データ送信端は、前記データ受信端と同じコードブック空間を配置し、前記データ受信端が送信するコードワードの番号を受信し、且つ前記番号に基づき、ローカルで配置したコードブック空間から相応するコードワードを抽出し、チャネル情報を取得するように設置され、
前記データ受信端は、前記データ送信端と同じコードブック空間を配置し、前記コードブック空間からチャネルにマッチしたコードワードを選択し、且つ該コードワードが対応する番号を前記データ送信端に送信するように設置されるチャネル状態情報フィードバックシステム。 - 前記データ送信端は下記の方式で前記データ受信端と同じコードブック空間を配置するように設置され、即ち、
前記チャネルのランクが1である時、
- 前記データ受信端は下記の方式で前記データ送信端と同じコードブック空間を配置するように設置され、即ち、
前記チャネルのランクが1である時、
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CN201010162569.XA CN101854236B (zh) | 2010-04-05 | 2010-04-05 | 一种信道信息反馈方法和系统 |
PCT/CN2010/078469 WO2011124065A1 (zh) | 2010-04-05 | 2010-11-05 | 一种信道状态信息反馈方法和系统 |
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JPN6013039310; ZTE: 'Considerations on 8-TX Codebook Design Principles[online]' 3GPP TSG-RAN WG1#60b R1-101835 , インターネット<URL:http://www.3gpp.org/ftp/tsg_ra * |
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WO2011124065A1 (zh) | 2011-10-13 |
RU2528153C2 (ru) | 2014-09-10 |
BR112012022726B1 (pt) | 2021-06-01 |
EP2536057B1 (en) | 2021-09-01 |
EP2536057A4 (en) | 2017-05-03 |
CN101854236A (zh) | 2010-10-06 |
BR112012022726A2 (pt) | 2017-12-12 |
US8831067B2 (en) | 2014-09-09 |
US20130208819A1 (en) | 2013-08-15 |
MX2012010580A (es) | 2012-10-09 |
KR101392396B1 (ko) | 2014-05-21 |
CN101854236B (zh) | 2015-04-01 |
ES2886354T3 (es) | 2021-12-17 |
EP2536057A1 (en) | 2012-12-19 |
RU2012136918A (ru) | 2014-05-20 |
JP5620521B2 (ja) | 2014-11-05 |
KR20120117932A (ko) | 2012-10-24 |
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