CN1602599A - Cofd系统的位级分集合并 - Google Patents

Cofd系统的位级分集合并 Download PDF

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Publication number
CN1602599A
CN1602599A CNA028247590A CN02824759A CN1602599A CN 1602599 A CN1602599 A CN 1602599A CN A028247590 A CNA028247590 A CN A028247590A CN 02824759 A CN02824759 A CN 02824759A CN 1602599 A CN1602599 A CN 1602599A
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CN
China
Prior art keywords
symbol
channel
receives
bit
metrics calculation
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.)
Pending
Application number
CNA028247590A
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English (en)
Chinese (zh)
Inventor
M·格霍斯
X·欧阳
J·米汉
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of CN1602599A publication Critical patent/CN1602599A/zh
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • 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
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • 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
    • 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
    • H04B7/0882—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 post-detection diversity
    • H04B7/0885—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 post-detection diversity with combination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Radio Transmission System (AREA)
CNA028247590A 2001-12-13 2002-11-20 Cofd系统的位级分集合并 Pending CN1602599A (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US34150801P 2001-12-13 2001-12-13
US60/341,508 2001-12-13
US10/185,385 US7236548B2 (en) 2001-12-13 2002-06-28 Bit level diversity combining for COFDM system
US10/185,385 2002-06-28

Publications (1)

Publication Number Publication Date
CN1602599A true CN1602599A (zh) 2005-03-30

Family

ID=26881097

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA028247590A Pending CN1602599A (zh) 2001-12-13 2002-11-20 Cofd系统的位级分集合并

Country Status (7)

Country Link
US (1) US7236548B2 (enExample)
EP (1) EP1459469A1 (enExample)
JP (1) JP2005512458A (enExample)
KR (1) KR20040075326A (enExample)
CN (1) CN1602599A (enExample)
AU (1) AU2002348837A1 (enExample)
WO (1) WO2003050993A1 (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7170961B2 (en) * 2002-01-08 2007-01-30 Patrick Vandenameele-Lepla Method and apparatus for frequency-domain tracking of residual frequency and channel estimation offsets
US7039001B2 (en) * 2002-10-29 2006-05-02 Qualcomm, Incorporated Channel estimation for OFDM communication systems
US7421046B2 (en) * 2002-12-31 2008-09-02 Vixs Systems Inc. Method and apparatus for signal decoding in a diversity reception system with maximum ratio combining
US20070110172A1 (en) * 2003-12-03 2007-05-17 Australian Telecommunications Cooperative Research Channel estimation for ofdm systems
US8891349B2 (en) 2004-07-23 2014-11-18 Qualcomm Incorporated Method of optimizing portions of a frame
KR100690086B1 (ko) * 2005-01-03 2007-03-08 한국전기연구원 직교 부호화 주파수 분할 다중 방식 통신 시스템에서의주파수 오프셋 추정을 위한 방법 및 반복적 수신기
US9113364B2 (en) * 2012-08-09 2015-08-18 Microsoft Technology Licensing, Llc Extended access point
FR3009909A1 (fr) * 2013-08-23 2015-02-27 Bluwan Procede de traitement au niveau paquet des perturbations induites par la transmission

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449327B1 (en) 1990-03-30 1998-07-15 Nec Corporation Noise-immune space diversity receiver
GB2244190A (en) 1990-05-17 1991-11-20 Orbitel Mobile Communications Receiver systems with equalisers
US5265122A (en) * 1992-03-19 1993-11-23 Motorola, Inc. Method and apparatus for estimating signal weighting parameters in a diversity receiver
SE513657C2 (sv) * 1993-06-24 2000-10-16 Ericsson Telefon Ab L M Sätt och anordning att vid digital signalöverföring estimera överförda symboler hos en mottagare
US6173014B1 (en) * 1994-08-02 2001-01-09 Telefonaktiebolaget Lm Ericsson Method of and apparatus for interference rejection combining and downlink beamforming in a cellular radio communications system
US6081566A (en) * 1994-08-02 2000-06-27 Ericsson, Inc. Method and apparatus for interference rejection with different beams, polarizations, and phase references
JP2689926B2 (ja) * 1994-12-05 1997-12-10 日本電気株式会社 ダイバーシティ受信機
US6192038B1 (en) * 1995-10-18 2001-02-20 Mdiversity Inc. Method and apparatus for wireless communication employing aggregation for digital signals
JP3180761B2 (ja) * 1997-07-23 2001-06-25 三菱電機株式会社 系列推定方法及び系列推定装置
US6130909A (en) * 1998-01-16 2000-10-10 Transamerica Business Credit Corporation Method and apparatus for equalization in a diversity receiver
EP0945989A1 (en) 1998-03-12 1999-09-29 Hitachi Micro Systems Europe Limited Viterbi decoding
US6498784B1 (en) * 1998-10-20 2002-12-24 Interdigital Technology Corporation Cancellation of pilot and traffic signals
GB9908675D0 (en) 1999-04-15 1999-06-09 British Broadcasting Corp Diversity reception method and diversity receivers
US6515978B1 (en) * 1999-04-19 2003-02-04 Lucent Technologies Inc. Methods and apparatus for downlink diversity in CDMA using Walsh codes
FR2794914B1 (fr) 1999-06-08 2002-03-01 Sagem Systeme parametrable a entrelacement temporel et frequentiel pour la transmission de donnees numeriques entre stations fixes ou mobiles
GB2355164B (en) 1999-10-07 2004-06-09 Oak Technology Inc Demodulator circuit
WO2001058105A1 (en) 2000-02-07 2001-08-09 At & T Corp. System and method for near optimal joint channel estimation and data detection for cofdm systems
US6763074B1 (en) * 2000-11-08 2004-07-13 Skyworks Solutions, Inc. Adaptive configurable demodulation system with multiple operating modes
US8158160B2 (en) * 2001-11-13 2012-04-17 Eric Hauser Kuhrts Anti-inflammatory cyclooxygenase inhibitors

Also Published As

Publication number Publication date
KR20040075326A (ko) 2004-08-27
JP2005512458A (ja) 2005-04-28
WO2003050993A1 (en) 2003-06-19
AU2002348837A1 (en) 2003-06-23
US7236548B2 (en) 2007-06-26
US20030112902A1 (en) 2003-06-19
EP1459469A1 (en) 2004-09-22

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