WO2002033852A3 - Verfahren zur verbesserung einer kanalabschätzung in einem funk-kommunikationssytem - Google Patents

Verfahren zur verbesserung einer kanalabschätzung in einem funk-kommunikationssytem Download PDF

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Publication number
WO2002033852A3
WO2002033852A3 PCT/DE2001/003922 DE0103922W WO0233852A3 WO 2002033852 A3 WO2002033852 A3 WO 2002033852A3 DE 0103922 W DE0103922 W DE 0103922W WO 0233852 A3 WO0233852 A3 WO 0233852A3
Authority
WO
WIPO (PCT)
Prior art keywords
channel estimate
improving
starting channel
radiocommunications system
eigenvectors
Prior art date
Application number
PCT/DE2001/003922
Other languages
English (en)
French (fr)
Other versions
WO2002033852A2 (de
Inventor
Martin Haardt
Original Assignee
Siemens Ag
Martin Haardt
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 Siemens Ag, Martin Haardt filed Critical Siemens Ag
Priority to US10/399,107 priority Critical patent/US20040110537A1/en
Priority to AU2002218139A priority patent/AU2002218139A1/en
Priority to KR10-2003-7005328A priority patent/KR20030044004A/ko
Publication of WO2002033852A2 publication Critical patent/WO2002033852A2/de
Publication of WO2002033852A3 publication Critical patent/WO2002033852A3/de

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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
    • 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
    • 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
    • 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

Landscapes

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

Abstract

Die Erfindung bezieht sich auf ein Verfahren zur Verbesserung einer Kanalabschätzung eines in einem mit einer adaptiven, eine Mehrzahl von M Antennenelementen umfassenden Antenne arbeitenden Funk-Kommunikationssystem übertragenen Funksignals, mit den Schritten: Bilden einer räumlichen Kovarianzmatrix anhand einer Ausgangs-Kanalabschätzung, wobei die Ausgangs-Kanalabschätzung die Form eines Vektors in einem M-dimensionalen Vektorraum hat; Ermitteln einer Anzahl Ln von Eigenvektoren der räumlichen Kovarianzmatrix, die kleiner als die Mehrzahl M der Antennenelemente ist; Berechnen einer Projektion der Ausgangs-Kanalabschätzung auf den von den Ln Eigenvektoren aufgespannten Unterraum; Ersetzen der Ausgangs-Kanalabschätzung durch die Projektion.
PCT/DE2001/003922 2000-10-16 2001-10-12 Verfahren zur verbesserung einer kanalabschätzung in einem funk-kommunikationssytem WO2002033852A2 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/399,107 US20040110537A1 (en) 2000-10-16 2001-10-12 Method for improving a channel estimate in a radiocommunication system
AU2002218139A AU2002218139A1 (en) 2000-10-16 2001-10-12 Method for improving a channel estimate in a radiocommunications system
KR10-2003-7005328A KR20030044004A (ko) 2000-10-16 2001-10-12 이동 통신 시스템에서 채널 추정을 개선시키기 위한 방법

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10051144.9 2000-10-16
DE10051144A DE10051144C2 (de) 2000-10-16 2000-10-16 Verfahren zur Verbesserung einer Kanalabschätzung in einem Funk-Kommunikationssystem

Publications (2)

Publication Number Publication Date
WO2002033852A2 WO2002033852A2 (de) 2002-04-25
WO2002033852A3 true WO2002033852A3 (de) 2002-09-06

Family

ID=7659904

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003922 WO2002033852A2 (de) 2000-10-16 2001-10-12 Verfahren zur verbesserung einer kanalabschätzung in einem funk-kommunikationssytem

Country Status (6)

Country Link
US (1) US20040110537A1 (de)
KR (1) KR20030044004A (de)
CN (1) CN1316756C (de)
AU (1) AU2002218139A1 (de)
DE (1) DE10051144C2 (de)
WO (1) WO2002033852A2 (de)

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US8842657B2 (en) 2003-10-15 2014-09-23 Qualcomm Incorporated High speed media access control with legacy system interoperability

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US7068977B1 (en) * 2002-10-11 2006-06-27 Navini Networks, Inc. Method and system for interference assessment and reduction in a wireless communication system
US7065144B2 (en) 2003-08-27 2006-06-20 Qualcomm Incorporated Frequency-independent spatial processing for wideband MISO and MIMO systems
US9226308B2 (en) 2003-10-15 2015-12-29 Qualcomm Incorporated Method, apparatus, and system for medium access control
US8462817B2 (en) 2003-10-15 2013-06-11 Qualcomm Incorporated Method, apparatus, and system for multiplexing protocol data units
US8233462B2 (en) 2003-10-15 2012-07-31 Qualcomm Incorporated High speed media access control and direct link protocol
US8483105B2 (en) 2003-10-15 2013-07-09 Qualcomm Incorporated High speed media access control
US8903440B2 (en) 2004-01-29 2014-12-02 Qualcomm Incorporated Distributed hierarchical scheduling in an ad hoc network
US7818018B2 (en) 2004-01-29 2010-10-19 Qualcomm Incorporated Distributed hierarchical scheduling in an AD hoc network
US8077691B2 (en) * 2004-03-05 2011-12-13 Qualcomm Incorporated Pilot transmission and channel estimation for MISO and MIMO receivers in a multi-antenna system
US8315271B2 (en) 2004-03-26 2012-11-20 Qualcomm Incorporated Method and apparatus for an ad-hoc wireless communications system
KR20050106658A (ko) * 2004-05-06 2005-11-11 한국전자통신연구원 Ｏｆｄｍ／ｔｄｄ 방식의 하향링크용 고유빔을 형성하기위한 스마트 안테나 시스템 및 그 방법
KR20050106657A (ko) 2004-05-06 2005-11-11 한국전자통신연구원 Ｏｆｄｍ／ｔｄｄ 방식의 상향링크용 고유빔을 형성하기위한 스마트 안테나 시스템 및 그 방법
US7564814B2 (en) 2004-05-07 2009-07-21 Qualcomm, Incorporated Transmission mode and rate selection for a wireless communication system
US8401018B2 (en) 2004-06-02 2013-03-19 Qualcomm Incorporated Method and apparatus for scheduling in a wireless network
US7599978B2 (en) 2004-07-06 2009-10-06 Telefonaktiebolaget L M Ericsson (Publ) Digital signal decimation by subspace projection
US7882412B2 (en) 2004-10-05 2011-02-01 Sanjiv Nanda Enhanced block acknowledgement
US8600336B2 (en) 2005-09-12 2013-12-03 Qualcomm Incorporated Scheduling with reverse direction grant in wireless communication systems
CN1980088B (zh) * 2005-11-30 2011-06-22 东南大学 一种分布天线移动通信系统中的上行链路接收方法及设备
US9793967B2 (en) * 2013-11-21 2017-10-17 The Hong Kong University Of Science And Technology Weighted sum data rate maximization using linear transceivers in a full-duplex multi-user MIMO system

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EP0669729A1 (de) * 1994-02-25 1995-08-30 Thomson-Csf Verfahren zur Durchführung von einer mehrkanalen Entzerrung in einem Rundfunkempfänger bei Störungen und Mehrwegeausbreitung
EP1143636A2 (de) * 2000-04-07 2001-10-10 SAMSUNG ELECTRONICS Co. Ltd. Funkkommunikationssystem mit Rückkopplung und Verfahren dafür

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IT1284712B1 (it) * 1996-07-29 1998-05-21 Roberto Cusani Ricevitore map per trasmissioni numeriche ad alta velocita' attraverso canali di rayleigh rumorosi e dispersivi nel tempo e nella frequenza.
AU4238697A (en) * 1996-08-29 1998-03-19 Cisco Technology, Inc. Spatio-temporal processing for communication
FI106681B (fi) * 1997-08-29 2001-03-15 Nokia Networks Oy Parametrin estimointimenetelmä ja vastaanotin
DE19803188B4 (de) * 1998-01-28 2006-04-20 Siemens Ag Verfahren und Basisstation zur Datenübertragung in einem Funk-Kommunikationssystem
GB9828216D0 (en) * 1998-12-21 1999-02-17 Northern Telecom Ltd A downlink beamforming approach for frequency division duplex cellular systems
DE10032426B4 (de) * 2000-07-04 2006-01-12 Siemens Ag Strahlformungsverfahren
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EP0669729A1 (de) * 1994-02-25 1995-08-30 Thomson-Csf Verfahren zur Durchführung von einer mehrkanalen Entzerrung in einem Rundfunkempfänger bei Störungen und Mehrwegeausbreitung
EP1143636A2 (de) * 2000-04-07 2001-10-10 SAMSUNG ELECTRONICS Co. Ltd. Funkkommunikationssystem mit Rückkopplung und Verfahren dafür

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8842657B2 (en) 2003-10-15 2014-09-23 Qualcomm Incorporated High speed media access control with legacy system interoperability

Also Published As

Publication number Publication date
DE10051144C2 (de) 2002-11-14
US20040110537A1 (en) 2004-06-10
CN1524357A (zh) 2004-08-25
CN1316756C (zh) 2007-05-16
KR20030044004A (ko) 2003-06-02
DE10051144A1 (de) 2002-04-25
AU2002218139A1 (en) 2002-04-29
WO2002033852A2 (de) 2002-04-25

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