CN104871437A - Fdd系统中信道互易性补偿方法和装置 - Google Patents

Fdd系统中信道互易性补偿方法和装置 Download PDF

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Publication number
CN104871437A
CN104871437A CN201280077697.1A CN201280077697A CN104871437A CN 104871437 A CN104871437 A CN 104871437A CN 201280077697 A CN201280077697 A CN 201280077697A CN 104871437 A CN104871437 A CN 104871437A
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channel matrix
matrix
user equipment
reference signal
down channel
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CN104871437B (zh
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杨红卫
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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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
    • H04B7/06—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]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

本发明提出了一种FDD通信系统中的信道互易性补偿方案。包括：基站发送对应一定数目子载波的下行参考信号至用户设备。用户设备估计该一定数目子载波上的下行信道矩阵，并估计所有子载波上的下行信道矩阵；用户设备选择所估计的所有子载波上的下行信道矩阵中的一部分，将其作为训练样本发送至基站；以及用户设备发送上行探测参考信号至基站。基站接收来自用户设备的训练样本；以及接收来自用户设备的上行探测参考信号，并根据该上行探测参考信号估计上行信道矩阵HUL。基站基于所估计的上行信道矩阵HUL，利用该上行信道矩阵的协方差矩阵估计上行离开角θ，并构建补偿矩阵T(θ)；以及基于和训练样本和上行信道矩阵HUL，估计A和B。基站根据下式重建下行信道矩阵的估计和。

Description

PCT国内申请，说明书已公开。

Claims (1)

  1. PCT国内申请，权利要求书已公开。
CN201280077697.1A 2012-12-31 2012-12-31 Fdd系统中信道互易性补偿方法和装置 Active CN104871437B (zh)

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PCT/CN2012/088006 WO2014101170A1 (zh) 2012-12-31 2012-12-31 Fdd系统中信道互易性补偿方法和装置

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CN107911153A (zh) * 2017-10-31 2018-04-13 东南大学 一种面向fdd系统的基于上行csi的下行信道重建方法
CN108809870A (zh) * 2018-05-08 2018-11-13 南京邮电大学 大规模mimo中的信道互易性补偿方法
WO2019037745A1 (zh) * 2017-08-24 2019-02-28 上海诺基亚贝尔股份有限公司 用于确定信道状态信息的方法和装置
CN111901258A (zh) * 2020-05-08 2020-11-06 中兴通讯股份有限公司 上下行信道互易的实现方法、通信节点和存储介质

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CN104467933B (zh) * 2014-10-29 2017-11-28 清华大学 时分双工多天线系统中基于叠加转发的中继信道校准方法
US9590708B1 (en) * 2015-08-25 2017-03-07 Motorola Mobility Llc Method and apparatus for equal energy codebooks for antenna arrays with mutual coupling
CN106559118B (zh) * 2015-09-24 2020-03-20 中国电信股份有限公司 用于大规模天线下用户终端方位角估计的方法和装置
CN106817720B (zh) * 2015-11-27 2019-07-02 中兴通讯股份有限公司 一种获取信道信息的方法及装置
KR102554710B1 (ko) 2016-09-23 2023-07-11 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 Srs를 전송하는 방법, 네트워크 기기 및 단말 기기
TWI632803B (zh) 2016-12-16 2018-08-11 財團法人工業技術研究院 通道資訊傳輸方法及應用其的無線通訊系統
CN108282198B (zh) 2017-01-06 2021-11-19 华为技术有限公司 一种信号传输方法和装置
US10560169B2 (en) * 2017-03-24 2020-02-11 Mediatek Inc. CSI acquisition with channel reciprocity in mobile communications
KR102266761B1 (ko) 2017-07-14 2021-06-21 후아웨이 테크놀러지 컴퍼니 리미티드 빔형성 방법 및 디바이스
EP3763052B1 (en) 2018-04-12 2023-05-31 Huawei Technologies Co., Ltd. Channel covariance matrix conversion
CN113572506B (zh) * 2021-06-01 2022-09-16 南京泰通科技股份有限公司 基于fdd预编码的高铁多trp无线通信方法

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019037745A1 (zh) * 2017-08-24 2019-02-28 上海诺基亚贝尔股份有限公司 用于确定信道状态信息的方法和装置
CN107911153A (zh) * 2017-10-31 2018-04-13 东南大学 一种面向fdd系统的基于上行csi的下行信道重建方法
CN107911153B (zh) * 2017-10-31 2021-01-19 东南大学 一种面向fdd系统的基于上行csi的下行信道重建方法
CN108809870A (zh) * 2018-05-08 2018-11-13 南京邮电大学 大规模mimo中的信道互易性补偿方法
CN108809870B (zh) * 2018-05-08 2021-03-30 南京邮电大学 大规模mimo中的信道互易性补偿方法
CN111901258A (zh) * 2020-05-08 2020-11-06 中兴通讯股份有限公司 上下行信道互易的实现方法、通信节点和存储介质

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