WO2008139865A1 - Ｍｍｓｅ等化回路、受信装置、及び通信システム、並びにその方法及びプログラム - Google Patents

Ｍｍｓｅ等化回路、受信装置、及び通信システム、並びにその方法及びプログラム Download PDF

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Publication number
WO2008139865A1
WO2008139865A1 PCT/JP2008/057819 JP2008057819W WO2008139865A1 WO 2008139865 A1 WO2008139865 A1 WO 2008139865A1 JP 2008057819 W JP2008057819 W JP 2008057819W WO 2008139865 A1 WO2008139865 A1 WO 2008139865A1
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WO
WIPO (PCT)
Prior art keywords
matrix
equalization circuit
mmse equalization
communication system
demodulation
Prior art date
Application number
PCT/JP2008/057819
Other languages
English (en)
French (fr)
Inventor
Katsutoshi Seki
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Publication of WO2008139865A1 publication Critical patent/WO2008139865A1/ja

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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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0854—Joint weighting using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0236—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols using estimation of the other symbols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0248—Eigen-space methods
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03617—Time recursive algorithms
    • H04L2025/03624—Zero-forcing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

【課題】少ない演算量を実現し、処理可能な通信容量の増大と、装置の小型化、省電力化を図る。 【解決手段】ＭＩＭＯ－ＯＦＤＭ通信システムに装備され、複数の送信アンテナ毎に設けられた復調部で復調されたベースバンド信号を成分とする復調信号ベクトルを等化し推定送信信号ベクトルを生成するＭＭＳＥ等化回路であり、ＭＩＭＯチャネルの特性を表すチャネル応答行列と，予め算定された雑音標準偏差を単位行列に乗算して得られる行列とにより拡散応答行列を形成し且つ当該拡散応答行列をＱＲ分解してユニタリ行列を生成するユニタリ行列生成手段を備え、この生成されたユニタリ行列から二つの部分行列を生成し且つ前記復調信号ベクトルに前記二つの部分行列と前記雑音標準偏差の逆数とを順次乗算して前記推定送信信号ベクトルを算出する送信ベクトル推定部を備えている。
PCT/JP2008/057819 2007-05-09 2008-04-23 Ｍｍｓｅ等化回路、受信装置、及び通信システム、並びにその方法及びプログラム WO2008139865A1 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007124905A JP2008283393A (ja) 2007-05-09 2007-05-09 Ｍｍｓｅ等化回路、受信装置、及び通信システム、並びにその方法及びプログラム
JP2007-124905 2007-05-09

Publications (1)

Publication Number Publication Date
WO2008139865A1 true WO2008139865A1 (ja) 2008-11-20

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Application Number Title Priority Date Filing Date
PCT/JP2008/057819 WO2008139865A1 (ja) 2007-05-09 2008-04-23 Ｍｍｓｅ等化回路、受信装置、及び通信システム、並びにその方法及びプログラム

Country Status (2)

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JP (1) JP2008283393A (ja)
WO (1) WO2008139865A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011035594A1 (zh) * 2009-09-28 2011-03-31 中兴通讯股份有限公司 正交频分复用-多输入多输出系统的解调方法及解调器
CN102208930A (zh) * 2010-03-30 2011-10-05 清华大学 快速信号子空间估计方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5385221B2 (ja) * 2010-06-30 2014-01-08 日本電信電話株式会社 雑音信号推定装置、雑音信号推定の方法、及び光受信機
JP5765105B2 (ja) * 2011-07-12 2015-08-19 富士通株式会社 受信装置および受信方法
JP6015372B2 (ja) * 2012-11-15 2016-10-26 富士通株式会社 無線通信装置、及び無線通信方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CESCATO D. ET AL.: "Interpolation-based QR decompositon in MIMO-OFDM systems", 2005 IEEE 6TH WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, 8 June 2005 (2005-06-08), XP010834656 *
WUBBEN D. AND KAMMEYER K.-D.: "INTERPOLATION-BASED SUCCESSIVE INTERFERENCE CANCELLATION FORPER-ANTENNA-CODED MIMO-OFDM SYSTEMS USING P-SQRD", WSA, 14 May 2006 (2006-05-14) *
WUBBEN D. ET AL.: "MMSE extension of V-BLAST based on sorted QR decomposition", VEHICULAR TECHNOLOGY CONFERENCE, 2003. VTC 2003-FALL. 2003 IEEE 58TH, 9 October 2003 (2003-10-09), XP010700838 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011035594A1 (zh) * 2009-09-28 2011-03-31 中兴通讯股份有限公司 正交频分复用-多输入多输出系统的解调方法及解调器
US8548101B2 (en) 2009-09-28 2013-10-01 Zte Corporation Demodulation method and demodulator for orthogonal frequency multiplexing—multiple input multiple output system
CN102208930A (zh) * 2010-03-30 2011-10-05 清华大学 快速信号子空间估计方法

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