WO2001018975A3 - Verfahren und anordnung zur strahlformung eines rake-empfängers für den ein-nutzer-empfang für den uplink-kanal in mobilfunksystemen - Google Patents

Verfahren und anordnung zur strahlformung eines rake-empfängers für den ein-nutzer-empfang für den uplink-kanal in mobilfunksystemen Download PDF

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Publication number
WO2001018975A3
WO2001018975A3 PCT/DE2000/003120 DE0003120W WO0118975A3 WO 2001018975 A3 WO2001018975 A3 WO 2001018975A3 DE 0003120 W DE0003120 W DE 0003120W WO 0118975 A3 WO0118975 A3 WO 0118975A3
Authority
WO
WIPO (PCT)
Prior art keywords
signals
rake receiver
paths
antenna array
directions
Prior art date
Application number
PCT/DE2000/003120
Other languages
English (en)
French (fr)
Other versions
WO2001018975A2 (de
Inventor
Holger Boche
Martin Schubert
Original Assignee
Holger Boche
Martin Schubert
Hertz Inst Heinrich
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 Holger Boche, Martin Schubert, Hertz Inst Heinrich filed Critical Holger Boche
Priority to EP00972580A priority Critical patent/EP1214797A2/de
Priority to AU11289/01A priority patent/AU1128901A/en
Publication of WO2001018975A2 publication Critical patent/WO2001018975A2/de
Publication of WO2001018975A3 publication Critical patent/WO2001018975A3/de

Links

Classifications

    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H01Q3/2611—Means for null steering; Adaptive interference nulling
    • 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
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

Es soll eine Lösung zur Verbesserung des Empfangs und zur Erhöhung der Signalqualität von Mobilstationen in CDMA-basierten Mobilfunksystemen der 3. Generation angegeben werden, die weniger aufwendig ist als bisher bekannte Lösungen. Bei dem erfindunsgemäßen Verfahren, bei dem ein Rake-Empfänger einem linearen Antennenarray (AA) nachgeschaltet wird, werden zunächst die Signale über N Antennen eines Antennenarrays empfangen und an Beamformer (BF) weitergeleitet, gleichzeitig werden zur Weiterleitung der empfangenen Signale an Beamformer die Richtungen der einzelnen Pfade der Empfangssignale geschätzt (DSPI) und danach aus den geschätzten Richtungen der Pfade die K stärksten Pfade ermittelt und ihrer Leistung nach sortiert. Anschließend werden die so ermittelten Signale der Richtungen φ1, ..., φK einzelnen Beamformern übergeben, deren Anzahl der der K stärksten Pfade entspricht, dann werden im k-ten Beamformer die Gewichtsfaktoren w(k) ermittelt, jeweils mit den Signalen der Ausgänge des Antennenarrays multipliziert und die so erzeugte Richtcharakteristik auf den jeweils zugeordneten Rake-Finger (RF) gegeben und abschließend die Richtcharakteristiken aus jedem der Rake-Finger zum Gesamtempfangssignal des 2D-Rake-Empfängers kombiniert (KO). Somit wird für jeden einzelnen Finger des 2D-Rake-Empfängers eine Richtcharakteristik erzeugt, die eine optimale Direktivität besitzt.
PCT/DE2000/003120 1999-09-06 2000-09-06 Verfahren und anordnung zur strahlformung eines rake-empfängers für den ein-nutzer-empfang für den uplink-kanal in mobilfunksystemen WO2001018975A2 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00972580A EP1214797A2 (de) 1999-09-06 2000-09-06 Verfahren und anordnung zur strahlformung eines rake-empfängers für den ein-nutzer-empfang für den uplink-kanal in mobilfunksystemen
AU11289/01A AU1128901A (en) 1999-09-06 2000-09-06 Method and arrangement for beam forming a rake receiver for the single user reception for the uplink channel in mobile radio telephone systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19943687.8 1999-09-06
DE1999143687 DE19943687C1 (de) 1999-09-06 1999-09-06 Verfahren und Anordnung zur Strahlformung eines Rake-Empfängers für den Ein-Nutzer-Empfang für den Uplink-Kanal in Mobilfunksystemen

Publications (2)

Publication Number Publication Date
WO2001018975A2 WO2001018975A2 (de) 2001-03-15
WO2001018975A3 true WO2001018975A3 (de) 2001-08-02

Family

ID=7921758

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/003120 WO2001018975A2 (de) 1999-09-06 2000-09-06 Verfahren und anordnung zur strahlformung eines rake-empfängers für den ein-nutzer-empfang für den uplink-kanal in mobilfunksystemen

Country Status (4)

Country Link
EP (1) EP1214797A2 (de)
AU (1) AU1128901A (de)
DE (1) DE19943687C1 (de)
WO (1) WO2001018975A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6956841B1 (en) 2000-05-24 2005-10-18 Nokia Networks Oy Receiver and method of receiving a desired signal
JP3424659B2 (ja) * 2000-06-02 2003-07-07 日本電気株式会社 マルチビーム受信装置
KR100591700B1 (ko) * 2001-10-06 2006-07-03 엘지노텔 주식회사 배열 안테나 시스템에서 신호 경로 탐색 방법 및 이를위한 장치
KR20030078521A (ko) * 2002-03-30 2003-10-08 삼성전자주식회사 상향 데이타 통신 장치 및 방법
WO2015182292A1 (ja) * 2014-05-29 2015-12-03 ソニー株式会社 装置
WO2016123766A1 (zh) * 2015-02-04 2016-08-11 华为技术有限公司 信号处理方法和相关设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0974372A (ja) * 1995-09-04 1997-03-18 Matsushita Electric Ind Co Ltd スペクトラム拡散無線伝送受信装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KUHWALD ET AL: "A New Optimum Constrained Beamforming-Algorithm for Future Mobile Communicaiton Systems Based on CDMA", PROC. 4TH ACTS MOBILE COMMUNICATIONS SUMMIT, June 1999 (1999-06-01), pages 963 - 968, XP000986632 *
OGAWA Y ET AL: "SPATIAL-DOMAIN PATH-DIVERSITY USING AN ADAPTIVE ARRAY FOR MOBILE COMMUNICATIONS", IEEE INTERNATIONAL CONFERENCE ON UNIVERSAL PERSONAL COMMUNICATIONS,US,NEW YORK, IEEE, vol. CONF. 4, 6 November 1995 (1995-11-06), pages 600 - 604, XP000690022, ISBN: 0-7803-2955-4 *

Also Published As

Publication number Publication date
DE19943687C1 (de) 2001-07-26
WO2001018975A2 (de) 2001-03-15
AU1128901A (en) 2001-04-10
EP1214797A2 (de) 2002-06-19

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