JP4950311B2 - 量子化されたチャネルのベクトルを決定する方法及び装置 - Google Patents
量子化されたチャネルのベクトルを決定する方法及び装置 Download PDFInfo
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- JP4950311B2 JP4950311B2 JP2010027847A JP2010027847A JP4950311B2 JP 4950311 B2 JP4950311 B2 JP 4950311B2 JP 2010027847 A JP2010027847 A JP 2010027847A JP 2010027847 A JP2010027847 A JP 2010027847A JP 4950311 B2 JP4950311 B2 JP 4950311B2
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- equation
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- codebook
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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
- H04B7/0636—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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
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- 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)
Description
一方、あらかじめ定義されたチャネル特性値の第2の値が、あらかじめ定義されたチャネル特性値の第1の値より大きい場合には、複数の量子化されたチャネルのベクトルのうちの、量子化誤差が最小である量子化されたチャネルのベクトルが、量子化されたチャネルのベクトルとして決定される。
Claims (8)
- 複数入力複数出力通信システムのある端末において、基地局及び前記端末間のチャネルの量子化チャネルベクトルであるコードブックエントリ(数14)を決定する方法であって、
- 前記コードブックエントリの決定は、(数21)に基づいて行われ、
- 複数入力複数出力通信システムのある端末において、基地局及び前記端末間のチャネルの量子化チャネルベクトルであるコードブックエントリ(数42)を決定する装置であって、
- コンピュータ又はマイクロコントローラ上で実行する際に、請求項1ないし5のいずれか一項に記載の方法を実行するプログラムコードを有するコンピュータプログラム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09001966A EP2219298A1 (en) | 2009-02-12 | 2009-02-12 | Method and apparatus for determining a quantized channel vector |
EP09001966.2 | 2009-02-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010213264A JP2010213264A (ja) | 2010-09-24 |
JP4950311B2 true JP4950311B2 (ja) | 2012-06-13 |
Family
ID=40785632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010027847A Expired - Fee Related JP4950311B2 (ja) | 2009-02-12 | 2010-02-10 | 量子化されたチャネルのベクトルを決定する方法及び装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8385395B2 (ja) |
EP (1) | EP2219298A1 (ja) |
JP (1) | JP4950311B2 (ja) |
CN (1) | CN101826939A (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20110093379A (ko) * | 2010-02-12 | 2011-08-18 | 주식회사 팬택 | 채널상태정보 피드백 장치와 그 방법, 기지국, 그 기지국의 전송방법 |
CN102404787B (zh) * | 2010-09-15 | 2014-07-09 | 华为技术有限公司 | 信号传输方法、基站及系统 |
JP5557704B2 (ja) * | 2010-11-09 | 2014-07-23 | シャープ株式会社 | 無線送信装置、無線受信装置、無線通信システムおよび集積回路 |
CN102545979B (zh) * | 2010-12-08 | 2016-01-20 | 上海贝尔股份有限公司 | 一种在通信系统中用于规划用户的方法、设备及系统 |
CN102571295B (zh) * | 2010-12-09 | 2015-01-14 | 上海贝尔股份有限公司 | 用于确定预编码信息的方法、设备及系统 |
CN102571180B (zh) * | 2010-12-16 | 2016-06-08 | 上海贝尔股份有限公司 | 在mimo无线通信系统中进行用户调度的方法和设备 |
JP5702702B2 (ja) * | 2011-10-28 | 2015-04-15 | 日本電信電話株式会社 | 無線通信システム、無線通信装置、及び無線通信方法 |
CN102916788B (zh) * | 2012-07-30 | 2015-09-16 | 东南大学 | 一种用于多小区协作通信中的自适应比特反馈方法 |
US9407302B2 (en) * | 2012-12-03 | 2016-08-02 | Intel Corporation | Communication device, mobile terminal, method for requesting information and method for providing information |
US9602178B2 (en) * | 2014-06-23 | 2017-03-21 | Nokia Technologies Oy | Joint precoder and receiver design for MU-MIMO downlink |
GB2548335B (en) * | 2016-03-08 | 2020-07-01 | Cambium Networks Ltd | Method and apparatus for channel sounding for a MU-MIMO wireless communication network |
US10506468B2 (en) * | 2017-09-08 | 2019-12-10 | At&T Intellectual Property I, L.P. | Reporting hybrid automatic repeat request-acknowledgements in wireless communication systems |
Family Cites Families (10)
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 |
US7139328B2 (en) * | 2004-11-04 | 2006-11-21 | Motorola, Inc. | Method and apparatus for closed loop data transmission |
CN1841985A (zh) | 2005-03-30 | 2006-10-04 | 松下电器产业株式会社 | 多天线系统的有限反馈方法 |
US9088855B2 (en) * | 2006-05-17 | 2015-07-21 | Creative Technology Ltd | Vector-space methods for primary-ambient decomposition of stereo audio signals |
US7839835B2 (en) * | 2006-08-22 | 2010-11-23 | Nec Laboratories America, Inc. | Quantized precoding over a set of parallel channels |
US7961807B2 (en) * | 2007-03-16 | 2011-06-14 | Freescale Semiconductor, Inc. | Reference signaling scheme using compressed feedforward codebooks for multi-user, multiple input, multiple output (MU-MIMO) systems |
CN101291526B (zh) * | 2007-04-18 | 2012-10-17 | 松下电器产业株式会社 | 减少信息反馈量的自适应调度方法和装置 |
CN101369837B (zh) | 2007-05-29 | 2013-02-06 | 三星电子株式会社 | 利用有限前馈信道进行波束形成的设备和方法 |
CN101355381A (zh) * | 2007-07-24 | 2009-01-28 | 株式会社Ntt都科摩 | 基于信道向量量化的调度和预编码方法及装置 |
CN101453259A (zh) * | 2007-12-03 | 2009-06-10 | 株式会社Ntt都科摩 | 一种多输入多输出系统的预编码传输方法 |
-
2009
- 2009-02-12 EP EP09001966A patent/EP2219298A1/en not_active Withdrawn
-
2010
- 2010-02-10 JP JP2010027847A patent/JP4950311B2/ja not_active Expired - Fee Related
- 2010-02-11 US US12/703,882 patent/US8385395B2/en not_active Expired - Fee Related
- 2010-02-12 CN CN201010138202A patent/CN101826939A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN101826939A (zh) | 2010-09-08 |
US8385395B2 (en) | 2013-02-26 |
US20100202503A1 (en) | 2010-08-12 |
JP2010213264A (ja) | 2010-09-24 |
EP2219298A1 (en) | 2010-08-18 |
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