BR112012025385A2 - método e sistema para retroalimentação de matriz de correlação para conjunto de antenas - Google Patents

método e sistema para retroalimentação de matriz de correlação para conjunto de antenas

Info

Publication number
BR112012025385A2
BR112012025385A2 BR112012025385A BR112012025385A BR112012025385A2 BR 112012025385 A2 BR112012025385 A2 BR 112012025385A2 BR 112012025385 A BR112012025385 A BR 112012025385A BR 112012025385 A BR112012025385 A BR 112012025385A BR 112012025385 A2 BR112012025385 A2 BR 112012025385A2
Authority
BR
Brazil
Prior art keywords
feedback
correlation
codeword
array
correlation matrix
Prior art date
Application number
BR112012025385A
Other languages
English (en)
Inventor
Dong Li
Hongwei Yang
Jinhui Chen
Yang Song
Original Assignee
Alcatel Lucent
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 Alcatel Lucent filed Critical Alcatel Lucent
Publication of BR112012025385A2 publication Critical patent/BR112012025385A2/pt

Links

Classifications

    • 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
    • H04B7/0613—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

método e sistema para retroalimentação de matriz de correlação para conjunto de antenas. a presente invenção refere-se a i um método e um sistema para retroalimentação de matriz de correlação para um conjunto de antenas. o método compreende as etapas de : selecionar, em uma extremidade receptora, uma palavra código a partir de um livro de códigos de matriz de correlação predeterminada que compreende uma pluralidade uma de palavras código de acordo com um critério predeterminado para representar uma matriz de correlação a ser retroalimentada (300); e retroalimentar um índice da palavra código selecionada no livro de códigos de matriz de correlação predeterminada para uma extremidade transmissora (302); em que cada palavra código é uma matriz de palavra código para aproximação de uma matriz de correlação de um conjunto de antenas na extremidade transmissora. de acordo com a presente invenção, é possível aproveitar bem as características das antenas ula próximas uma da outra e a correlação espacial das mesmas, projetar um livro de códigos correspondente para quantização e retroalimentação, reduzir a sobrecarga de retroalimentação e a complexidade computacional de modo a melhorar o desempenho de sistema de um sistema correlação espacial auxiliada, como um sistema mimo.
BR112012025385A 2010-04-06 2010-04-06 método e sistema para retroalimentação de matriz de correlação para conjunto de antenas BR112012025385A2 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2010/000447 WO2011123977A1 (zh) 2010-04-06 2010-04-06 针对天线阵列的相关矩阵反馈方法和系统

Publications (1)

Publication Number Publication Date
BR112012025385A2 true BR112012025385A2 (pt) 2016-06-28

Family

ID=44761987

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012025385A BR112012025385A2 (pt) 2010-04-06 2010-04-06 método e sistema para retroalimentação de matriz de correlação para conjunto de antenas

Country Status (7)

Country Link
US (1) US8982973B2 (pt)
EP (1) EP2557719B1 (pt)
JP (1) JP5706514B2 (pt)
KR (1) KR101481982B1 (pt)
CN (1) CN102725991B (pt)
BR (1) BR112012025385A2 (pt)
WO (1) WO2011123977A1 (pt)

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US8711963B2 (en) * 2010-02-11 2014-04-29 Samsung Electronics Co., Ltd. Unified feedback frame for supporting a plurality of feedback modes and a multiple-input multiple-output (MIMO) communication system using the unified feedback frame
BR112012025271A2 (pt) * 2010-04-07 2016-06-21 Alcatel Lucent método e aparelho para retroinformar e construir uma matriz de correlação em sistemas de múltiplas entradas e múltiplas saídas
US9088315B2 (en) * 2012-04-18 2015-07-21 Intel Mobile Communications GmbH Radio communications system and method performed therein
KR102054203B1 (ko) * 2013-01-31 2019-12-10 삼성전자주식회사 다중 입력 및 다중 출력 시스템에서 채널 추정 피드백 방법 및 장치
US10374836B2 (en) * 2015-10-28 2019-08-06 Huawei Technologies Canada Co., Ltd. Method and apparatus for downlink channel estimation in massive MIMO
KR20180098592A (ko) * 2015-12-23 2018-09-04 노키아 솔루션스 앤드 네트웍스 오와이 다중-입력 및 다중-출력(mimo) 무선 네트워크들에 대한 희소 상관 매트릭스의 피드백
US10299192B2 (en) 2017-01-07 2019-05-21 At&T Intellectual Property I, L.P. Configuration of codeword numbers for 5G or other next generation network

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US20050286663A1 (en) 2004-06-23 2005-12-29 Intel Corporation Compact feedback for closed loop MIMO systems
US7672387B2 (en) * 2005-12-05 2010-03-02 Intel Corporation Multiple input, multiple output wireless communication system, associated methods and data structures
US20080037669A1 (en) * 2006-08-11 2008-02-14 Interdigital Technology Corporation Wireless communication method and system for indexing codebook and codeword feedback
US7702029B2 (en) * 2006-10-02 2010-04-20 Freescale Semiconductor, Inc. MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
CN101166052B (zh) * 2006-10-19 2012-05-23 株式会社Ntt都科摩 一种多输入多输出系统的预编码方法及使用该方法的设备
US8199840B2 (en) * 2007-04-26 2012-06-12 Telefonaktiebolaget Lm Ericsson (Publ) Multiple-input, multiple-output communication system with reduced feedback
JP5134018B2 (ja) * 2007-06-23 2013-01-30 パナソニック株式会社 多入力多出力（ｍｉｍｏ）通信システムにおける通信チャネルの最適化の方法およびシステム
US20080317145A1 (en) * 2007-06-25 2008-12-25 Bruno Clerckx Multiple input multiple output communication system and a method of adaptively generating codebook
US9225397B2 (en) * 2007-07-10 2015-12-29 Texas Instruments Incorporated Efficient rank and precoding matrix feedback for MIMO systems
US8254487B2 (en) * 2007-08-09 2012-08-28 Samsung Electronics Co., Ltd. Method and apparatus of codebook-based single-user closed-loop transmit beamforming (SU-CLTB) for OFDM wireless systems
CN101510820B (zh) * 2008-12-30 2010-09-29 普天信息技术研究院有限公司 一种预编码矩阵的选择方法
US8649456B2 (en) * 2009-03-12 2014-02-11 Futurewei Technologies, Inc. System and method for channel information feedback in a wireless communications system

Also Published As

Publication number Publication date
JP2013526130A (ja) 2013-06-20
KR101481982B1 (ko) 2015-01-14
EP2557719A4 (en) 2015-10-28
EP2557719A1 (en) 2013-02-13
US8982973B2 (en) 2015-03-17
CN102725991B (zh) 2015-07-15
KR20120135434A (ko) 2012-12-13
US20130022139A1 (en) 2013-01-24
WO2011123977A1 (zh) 2011-10-13
EP2557719B1 (en) 2017-12-06
JP5706514B2 (ja) 2015-04-22
CN102725991A (zh) 2012-10-10

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according art. 34 industrial property law
B06U Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure
B15K Others concerning applications: alteration of classification

Free format text: A CLASSIFICACAO ANTERIOR ERA: H04L 1/06

Ipc: H04B 7/06 (2006.01)

B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements