[go: up one dir, main page]

WO2009091128A3 - Apparatus and method for receiving signal in a communication system - Google Patents

Apparatus and method for receiving signal in a communication system Download PDF

Info

Publication number
WO2009091128A3
WO2009091128A3 PCT/KR2008/007729 KR2008007729W WO2009091128A3 WO 2009091128 A3 WO2009091128 A3 WO 2009091128A3 KR 2008007729 W KR2008007729 W KR 2008007729W WO 2009091128 A3 WO2009091128 A3 WO 2009091128A3
Authority
WO
WIPO (PCT)
Prior art keywords
transmission
transmission signal
symbols
transmission signals
detection error
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2008/007729
Other languages
French (fr)
Other versions
WO2009091128A2 (en
Inventor
San-Hae Kim
Sang-Bae Ji
Sung-Jin Kang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posdata Co Ltd
Original Assignee
Posdata Co Ltd
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 Posdata Co Ltd filed Critical Posdata Co Ltd
Publication of WO2009091128A2 publication Critical patent/WO2009091128A2/en
Publication of WO2009091128A3 publication Critical patent/WO2009091128A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • H04B7/08—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
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • 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
    • 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
    • H04L25/0256—Channel estimation using minimum mean square error criteria
    • 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
    • H04L25/0258—Channel estimation using zero-forcing criteria

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Radio Transmission System (AREA)

Abstract

The present invention calculates detection error offsets for respective symbols of a first transmission signal among transmission signals transmitted via a plurality of transmission antennas, by using a first channel matrix among a channel matrix formed by the transmission signals and a reception signal received via a plurality of reception antennas, and candidate symbols of the transmission signals, stores the detection error offsets for the respective symbols of the first transmission signal and the candidate symbols of the first transmission signal, calculates a Log Likelihood Ratio (LLR) of the first transmission signal by using the detection error offsets for the respective symbols of the first transmission signal, and the candidate symbols of the first transmission signal, and calculates LLRs of the transmission signals by repeating the above steps as many times as a number of the transmission signals.
PCT/KR2008/007729 2007-12-28 2008-12-27 Apparatus and method for receiving signal in a communication system Ceased WO2009091128A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070139783A KR100960418B1 (en) 2007-12-28 2007-12-28 Apparatus and method for receiving signal in communication system
KR10-2007-0139783 2007-12-28

Publications (2)

Publication Number Publication Date
WO2009091128A2 WO2009091128A2 (en) 2009-07-23
WO2009091128A3 true WO2009091128A3 (en) 2009-09-11

Family

ID=40885755

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/007729 Ceased WO2009091128A2 (en) 2007-12-28 2008-12-27 Apparatus and method for receiving signal in a communication system

Country Status (2)

Country Link
KR (1) KR100960418B1 (en)
WO (1) WO2009091128A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8995581B2 (en) 2011-05-11 2015-03-31 Samsung Electronics Co., Ltd. Apparatus and method for soft demapping
CN103095358B (en) * 2011-11-02 2016-08-03 华为技术有限公司 The detection method of a kind of multiple-input, multiple-output signal and device
CN103248587B (en) * 2012-02-14 2016-03-09 电信科学技术研究院 Signal processing method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050018789A1 (en) * 2003-06-27 2005-01-27 Nortel Networks Limited Fast space-time decoding using soft demapping with table look-up
WO2005034455A1 (en) * 2003-10-03 2005-04-14 Kabushiki Kaisha Toshiba Method and apparatus for sphere decoding
WO2005076491A1 (en) * 2004-02-09 2005-08-18 Nokia Corporation Signal detection using sphere decoding technique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7302018B2 (en) * 2003-05-29 2007-11-27 Texas Instruments Incorporated Iterative detection in MIMO systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050018789A1 (en) * 2003-06-27 2005-01-27 Nortel Networks Limited Fast space-time decoding using soft demapping with table look-up
WO2005034455A1 (en) * 2003-10-03 2005-04-14 Kabushiki Kaisha Toshiba Method and apparatus for sphere decoding
WO2005076491A1 (en) * 2004-02-09 2005-08-18 Nokia Corporation Signal detection using sphere decoding technique

Also Published As

Publication number Publication date
KR20090071857A (en) 2009-07-02
WO2009091128A2 (en) 2009-07-23
KR100960418B1 (en) 2010-05-28

Similar Documents

Publication Publication Date Title
WO2007062021A3 (en) Reduced complexity detection and decoding for a receiver in a communication system
WO2008058109A3 (en) Codeword level scrambling for mimo transmission
WO2005060363A3 (en) Methods and apparatus for synchronously combining signals from plural transmitters
WO2010147515A8 (en) A method for antenna calibration in a wideband communication system
WO2010011056A3 (en) Method and apparatus for transmitting reference signal in multiple antenna system
WO2011037426A3 (en) Method whereby a channel quality indicator is fed back by a terminal in a multiple-antenna wireless communication system, and a device therefor
WO2013064835A3 (en) Communication apparatus and method
WO2009109394A3 (en) Mimo sphere detection with parallel distributed node processing
WO2008075264A3 (en) Beacon transmission and reception using directional antennas
WO2008150534A3 (en) Short range booster and methods for boosting with multiple antennas
WO2011078951A3 (en) Method and system for improving wireless link robustness using spatial diversity
WO2010123332A3 (en) Data communication using 2d bar codes
WO2011034340A3 (en) Method and apparatus for transmitting a downlink reference signal in a wireless communication system supporting multiple antennas
WO2007037637A3 (en) A method and apparatus for channel estimation
WO2009124283A3 (en) A method and system of a mobile subscriber estimating position
WO2008001364A3 (en) Method, device and system of multi-input-multi-output wireless communication
WO2009113105A3 (en) A method to detect data transmitted by multiple antennas
WO2008136750A3 (en) Method for detecting transmission mode in a system using multiple antennas
WO2008150223A3 (en) Method and apparatus for channel estimation in a transmit diversity environment
WO2010011078A3 (en) Method of transmitting data in multiple antenna system
WO2011120031A3 (en) Method and apparatus to adjust received signal
WO2011142576A3 (en) Method and apparatus for receiving downlink signals
WO2007084303A3 (en) Method and apparatus for supporting transmit diversity in a receiver
WO2012103853A3 (en) Signal receiving and sending methods, transmitter, receiver, and system thereof
WO2009004767A1 (en) Multi-antenna transmission device and multi-antenna transmission method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08870624

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08870624

Country of ref document: EP

Kind code of ref document: A2