ES2141707T3 - Sistema de recepcion en diversidad. - Google Patents

Sistema de recepcion en diversidad.

Info

Publication number
ES2141707T3
ES2141707T3 ES91850229T ES91850229T ES2141707T3 ES 2141707 T3 ES2141707 T3 ES 2141707T3 ES 91850229 T ES91850229 T ES 91850229T ES 91850229 T ES91850229 T ES 91850229T ES 2141707 T3 ES2141707 T3 ES 2141707T3
Authority
ES
Spain
Prior art keywords
signals
signal
radio frequency
steps
phase
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.)
Expired - Lifetime
Application number
ES91850229T
Other languages
English (en)
Inventor
Paul Wilkinson Dent
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.)
Ericsson Inc
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Application granted granted Critical
Publication of ES2141707T3 publication Critical patent/ES2141707T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Circuits Of Receivers In General (AREA)
  • Noise Elimination (AREA)

Abstract

SE PROPORCIONAN DOS O MAS PASOS DE SEÑALES PARA RECIBIR UNA SEÑAL DE RADIO FRECUENCIA. UNO O MAS PASOS DE SEÑALES INCLUYEN FILTROS DE PASO DE BANDA CONVENCIONALES PARA ELIMINAR LAS SEÑALES DE INTERFERENCIA Y DE RUIDO. UNO O MAS PASOS DE SEÑALES SOBRANTES INCLUYEN DISPOSITIVOS REDUCIDOS DE FILTRACION PARA AUMENTAR LA SENSIBILIDAD DE UN RECEPTOR DE RADIO FRECUENCIAS HACIA LA SEÑAL DESEADA. CADA UNO DE LOS PASOS DE RECEPCION ESTAN ACOPLADOS A SU AMPLIFICADOR DE RADIO FRECUENCIA RESPECTIVO. SIEMPRE QUE CADA AMPLIFICADOR DE RADIO FRECUENCIA TENGA IMPEDANCIAS DE SALIDA DE LA FUENTE DE POTENCIA EQUIVALENTES, LAS SEÑALES DE SALIDA DE CADA AMPLIFICADOR SE AÑADEN CONSTRUCTIVAMENTE SI SON SEÑALES EN FASE. SI LAS SEÑALES DE SALIDA ESTAN FUERA DE FASE, UN INVERSOR DE FASES INVERTIRA LA FASE DE UNA SEÑAL DE FORMA QUE LAS SEÑALES PUEDAN AÑADIRSE CONSTRUCTIVAMENTE. LAS SEÑALES COMBINADAS DE DOS O MAS AMPLIFICADORES DE RADIO FRECUENCIAS, PASAN A TRAVES DE VARIOS COMPONENTES DE PROCESAMIENTO DE SEÑALES ASOCIADOS CON LOS RECEPTORES SUPERHETERODINOS CONVENCIONALES. UNA UNIDAD DE CONTROL PRODUCE SEÑALES DE VARIACION DE GANANCIA PARA CONTROLAR LA GANANCIA DE CADA AMPLIFICADOR DE RADIO FRECUENCIA. POR LO TANTO, LA UNIDAD DE CONTROL, CONTROLA SI LA SEÑAL DESEADA SE RECIBE DESDE UN PRIMER PASO DE SEÑALES, DESDE UN SEGUNDO PASO, O COMO UNA COMBINACION PESADA DE DOS O MAS PASOS DE SEÑALES.
ES91850229T 1990-09-21 1991-09-20 Sistema de recepcion en diversidad. Expired - Lifetime ES2141707T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58591090A 1990-09-21 1990-09-21

Publications (1)

Publication Number Publication Date
ES2141707T3 true ES2141707T3 (es) 2000-04-01

Family

ID=24343487

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91850229T Expired - Lifetime ES2141707T3 (es) 1990-09-21 1991-09-20 Sistema de recepcion en diversidad.

Country Status (12)

Country Link
US (1) US5361404A (es)
EP (1) EP0477158B1 (es)
JP (1) JP3298911B2 (es)
AU (1) AU651376B2 (es)
CA (1) CA2051283C (es)
DE (1) DE69131772T2 (es)
ES (1) ES2141707T3 (es)
FI (1) FI110219B (es)
HK (1) HK1014317A1 (es)
MX (1) MX9101202A (es)
NO (1) NO175338C (es)
NZ (1) NZ239733A (es)

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IT1259031B (it) * 1992-05-25 1996-03-11 Alcatel Italia Metodo e dispositivo per ottimizzare il collegamento radio per un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo variando il livello di attenuazione relativo tra i due canali
IT1259032B (it) * 1992-05-25 1996-03-11 Alcatel Italia Metodo per processare ed ottimizzare la funzione per analogica in un sistema di trasmissione radio digitale in diversita' di spazio e/o angolo
GB2281479B (en) * 1993-08-27 1997-09-03 Nokia Telecommunications Oy Radio receiving apparatus
JPH07273840A (ja) 1994-03-25 1995-10-20 Nec Corp 音声帯域制御機能を有する移動電話機
JPH10501395A (ja) * 1994-06-03 1998-02-03 テレフオンアクチーボラゲツト エル エム エリクソン アンテナ用ダイバシティ結合
US5628052A (en) * 1994-09-12 1997-05-06 Lucent Technologies Inc. Wireless communication system using distributed switched antennas
US5579319A (en) * 1994-09-22 1996-11-26 Motorola, Inc. Receiver path selection based on burst-type in a time division multiple access receiver
JP3088246B2 (ja) * 1994-10-05 2000-09-18 三菱電機株式会社 無線通信装置
JP3243130B2 (ja) * 1994-10-31 2002-01-07 松下電器産業株式会社 アダプティブアンテナ付き受信装置
GB9424341D0 (en) * 1994-12-02 1995-01-18 Philips Electronics Uk Ltd Receiver diversity
US6975582B1 (en) 1995-07-12 2005-12-13 Ericsson Inc. Dual mode satellite/cellular terminal
US6018651A (en) * 1995-11-29 2000-01-25 Motorola, Inc. Radio subscriber unit having a switched antenna diversity apparatus and method therefor
US6023615A (en) * 1995-11-29 2000-02-08 Motorola, Inc. Method for controlling a diversity receiver apparatus in a radio subscriber unit
US6014570A (en) * 1995-12-18 2000-01-11 The Board Of Trustees Of The Leland Stanford Junior University Efficient radio signal diversity combining using a small set of discrete amplitude and phase weights
US5761614A (en) * 1996-03-22 1998-06-02 Ericsson Inc. Automated system and method for optimizing receive system performance
FI107851B (fi) * 1996-05-22 2001-10-15 Nokia Networks Oy Menetelmä antennikeilan valitsemiseksi, tukiasema ja solukkoradiojärjestelmä
US5852772A (en) * 1997-02-25 1998-12-22 Ericsson Inc. Receiver IF system with active filters
US6256484B1 (en) * 1997-02-26 2001-07-03 Telex Communications, Inc. Diversity reception system
EP0872964A1 (en) * 1997-04-09 1998-10-21 Nec Corporation Apparatus and method of achieving improved diversity reception in a digital radio communications system
US5966646A (en) * 1997-05-13 1999-10-12 Ericsson, Inc. Dual-band radio receiver
DE19743123B4 (de) * 1997-09-30 2005-11-24 Harman Becker Automotive Systems (Xsys Division) Gmbh Verfahren und Schaltungsanordnung zur Auswahl eines von mehreren Empfängern einer Diversity-Empfangsanlage
US6226507B1 (en) 1998-02-03 2001-05-01 Ericsson Inc. Apparatus and method for selecting between a plurality of antennas utilized by a microcellular communications terminal for reception of a signal
US6330458B1 (en) * 1998-08-31 2001-12-11 Lucent Technologies Inc. Intelligent antenna sub-sector switching for time slotted systems
US6556807B1 (en) * 1998-10-06 2003-04-29 Mitsubishi Electric & Electronics Usa, Inc. Antenna receiving system
US6567475B1 (en) 1998-12-29 2003-05-20 Ericsson Inc. Method and system for the transmission, reception and processing of 4-level and 8-level signaling symbols
US7024168B1 (en) 1999-07-07 2006-04-04 Telefonaktiebolaget L M Ericsson (Publ) Controlled antenna diversity
US6259752B1 (en) * 2000-02-01 2001-07-10 Conexant Systems, Inc. System for cancelling internal interference in a receiver
DE10038616B4 (de) * 2000-08-08 2012-07-12 Atmel Automotive Gmbh Verfahren und Anordnung zur Störunterdrückung in einer Empfängerschaltung
US20030022648A1 (en) * 2001-07-27 2003-01-30 J.S. Wight, Inc. Selectable inversion / variable gain combiner for diversity reception in RF transceivers
US6963733B2 (en) * 2001-10-31 2005-11-08 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for reducing the effect of AGC switching transients
JP2005531202A (ja) 2002-06-21 2005-10-13 ワイデファイ インコーポレイテッド 無線ローカル・エリア・ネットワーク・リピータ
GB0219170D0 (en) * 2002-08-16 2002-09-25 Univ Surrey Wireless communication system and a method of operating a wireless communication system
US8885688B2 (en) 2002-10-01 2014-11-11 Qualcomm Incorporated Control message management in physical layer repeater
KR100548321B1 (ko) 2003-01-07 2006-02-02 엘지전자 주식회사 동위상 합성 다이버시티 수신 장치 및 방법
US7359692B2 (en) 2003-06-30 2008-04-15 Zarbana Digital Fund, Llc Method of and device for antennae diversity switching
US7512392B2 (en) * 2004-08-12 2009-03-31 Skyworks Solutions, Inc. System for adaptively filtering a received signal in a wireless receiver
EP2064903A4 (en) 2006-09-21 2011-12-14 Qualcomm Inc METHOD AND APPARATUS FOR REDUCING OSCILLATION BETWEEN REPEATERS
EP2082496A4 (en) 2006-10-26 2013-05-22 Qualcomm Inc REPEATER TECHNIQUES FOR MULTIPLE INPUTS AND MULTIPLE OUTPUTS USING JET MAKERS

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Publication number Priority date Publication date Assignee Title
US3728633A (en) * 1961-11-22 1973-04-17 Gte Sylvania Inc Radio receiver with wide dynamic range
GB991446A (en) * 1962-08-29 1965-05-05 Nippon Electric Co A control signal generator for diversity reception
GB1408423A (en) * 1972-04-11 1975-10-01 Marconi Co Ltd Signal handling arrangements and frequency diversity combining arrangements utilising the same
US3879664A (en) * 1973-05-07 1975-04-22 Signatron High speed digital communication receiver
US3965422A (en) * 1974-07-26 1976-06-22 The United States Of America As Represented By The Secretary Of The Air Force System channel distortion weighting for predetection combiners
US3934204A (en) * 1974-10-04 1976-01-20 The United States Of America As Represented By The Secretary Of The Navy AM/AGC weighted diversity combiner/selector
US4347627A (en) * 1979-02-26 1982-08-31 E-Systems, Inc. Adaptive array processor and processing method for communication system
JPS5792931A (en) * 1980-11-28 1982-06-09 Fujitsu Ltd Space diversity receiving device
GB2096865B (en) * 1981-03-26 1984-12-12 Ferranti Ltd Diversity receivers
JPS58202642A (ja) * 1982-05-21 1983-11-25 Nec Corp スペ−スダイバ−シテイ受信装置
JPS5992633A (ja) * 1982-11-19 1984-05-28 Nec Corp ダイバ−シテイ受信合成方式
JPS61131625A (ja) * 1984-11-29 1986-06-19 Nec Corp スペ−スダイバ−シチ受信方式
JPS61284125A (ja) * 1985-06-11 1986-12-15 Nec Corp ダイバ−シチ受信方式
US4734701A (en) * 1986-03-12 1988-03-29 Magnavox Government And Industrial Electronics Company Null processing receiver apparatus and method
US4710945A (en) * 1986-04-30 1987-12-01 Motorola, Inc. Signal selection by statistical comparison
SE455981B (sv) * 1986-12-15 1988-08-22 Ericsson Telefon Ab L M Diversitetskombinator
JP2622972B2 (ja) * 1987-09-17 1997-06-25 三洋電機株式会社 Ｆｍラジオ受信機
CA1292584C (en) * 1987-11-30 1991-11-26 Henry Ludwig Kazecki Antenna selection control circuit
FR2628913B1 (fr) * 1988-03-18 1990-06-29 Alcatel Thomson Faisceaux Recepteur pour systeme de transmission par voie hertzienne a diversite d'espace

Also Published As

Publication number Publication date
MX9101202A (es) 1992-05-04
DE69131772D1 (de) 1999-12-16
FI914412A (fi) 1992-03-22
AU651376B2 (en) 1994-07-21
HK1014317A1 (en) 1999-09-24
JP3298911B2 (ja) 2002-07-08
AU8461091A (en) 1992-03-26
FI914412A0 (fi) 1991-09-19
FI110219B (fi) 2002-12-13
NO175338B (no) 1994-06-20
JPH0697858A (ja) 1994-04-08
NO913611D0 (no) 1991-09-12
NZ239733A (en) 1994-04-27
CA2051283C (en) 2000-11-21
NO913611L (no) 1992-03-23
CA2051283A1 (en) 1992-03-22
EP0477158A3 (en) 1993-03-03
DE69131772T2 (de) 2000-04-06
US5361404A (en) 1994-11-01
EP0477158B1 (en) 1999-11-10
NO175338C (no) 1994-09-28
EP0477158A2 (en) 1992-03-25

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