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MX9601592A - Un metodo y aparato para diversidad de seleccion digital. - Google Patents

Un metodo y aparato para diversidad de seleccion digital.

Info

Publication number
MX9601592A
MX9601592A MX9601592A MX9601592A MX9601592A MX 9601592 A MX9601592 A MX 9601592A MX 9601592 A MX9601592 A MX 9601592A MX 9601592 A MX9601592 A MX 9601592A MX 9601592 A MX9601592 A MX 9601592A
Authority
MX
Mexico
Prior art keywords
signal
diversity
filter
active
demodulator
Prior art date
Application number
MX9601592A
Other languages
English (en)
Inventor
Bruce Joseph Zastera
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of MX9601592A publication Critical patent/MX9601592A/es

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
    • H04B7/0802—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 antenna selection
    • H04B7/0817—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 antenna selection with multiple receivers and antenna path selection
    • H04B7/082—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 antenna selection with multiple receivers and antenna path selection selecting best antenna path

Landscapes

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

Abstract

Un sistema para diversidad de seleccion digital incluye la recepcion de diferentes versiones de una señal en antenas diferentes (222, 226) de un receptor (210), y el procesamiento de las diferentes versiones en bifurcaciones separadas que tienen cada una un subconversor digital (224, 228) y un filtro (232, 236). Los filtros se controlan mediante un selector de conmutacion en diversidad (250) a fin de que uno actue para filtrar (la bifurcacion activa), y los otros diezman sus versiones respectivas de la señal entrada, en base a la cantidad de señal detectada. El selector de conmutacion en diversidad también controla un demodulador (240) para demodular la señal filtrada. Las señales diezmadas se utilizan para proporcionar tanto informacion de calidad de señal como historia de fase cuando una bifurcacion se vuelve activa. Cuando se determina que la cantidad de señal en una bifurcacion inactiva es mayor, el controlador de conmutacion en diversidad es mayor, el controlador de conmutacion en diversidad controla ese filtro de la bifurcacion para conmutarlo a un modo de filtro, y al demodulador para utilizar la ultima muestra diezmada para la historia de fase cuando se demodule inicialmente la version de la señal proveniente de la bifurcacion nuevamente activa.
MX9601592A 1994-08-31 1995-07-20 Un metodo y aparato para diversidad de seleccion digital. MX9601592A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/298,876 US5621770A (en) 1994-08-31 1994-08-31 Method and system for processing first and second digital signal versions of a signal in a diversity receiver
PCT/US1995/009129 WO1996007247A1 (en) 1994-08-31 1995-07-20 A method and apparatus for digital selection diversity

Publications (1)

Publication Number Publication Date
MX9601592A true MX9601592A (es) 1997-05-31

Family

ID=23152351

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9601592A MX9601592A (es) 1994-08-31 1995-07-20 Un metodo y aparato para diversidad de seleccion digital.

Country Status (10)

Country Link
US (1) US5621770A (es)
JP (1) JPH09504936A (es)
CN (1) CN1080040C (es)
BR (1) BR9506344A (es)
CA (1) CA2174242C (es)
DE (1) DE19581148C2 (es)
FI (1) FI114359B (es)
MX (1) MX9601592A (es)
SE (1) SE517617C2 (es)
WO (1) WO1996007247A1 (es)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5883921A (en) * 1995-07-31 1999-03-16 Harris Corporation Short burst acquisition circuit and method for direct sequence spread spectrum links
US6009130A (en) * 1995-12-28 1999-12-28 Motorola, Inc. Multiple access digital transmitter and receiver
US6421543B1 (en) * 1996-01-29 2002-07-16 Ericsson Inc. Cellular radiotelephone base stations and methods using selected multiple diversity reception
JP3576676B2 (ja) * 1996-01-31 2004-10-13 三菱電機株式会社 ダイバーシチ受信機
JP3288574B2 (ja) * 1996-02-26 2002-06-04 松下電器産業株式会社 データ受信装置
US5822326A (en) * 1996-05-10 1998-10-13 Tektronix, Inc. Synchronizing digital audio signals
JP3060952B2 (ja) * 1996-07-19 2000-07-10 日本電気株式会社 ダイバーシチ受信装置
US6335954B1 (en) * 1996-12-27 2002-01-01 Ericsson Inc. Method and apparatus for joint synchronization of multiple receive channels
JP3110333B2 (ja) * 1997-01-23 2000-11-20 埼玉日本電気株式会社 Ｔｄｍａ方式無線装置の送信ダイバシチー回路
JPH10336087A (ja) * 1997-05-30 1998-12-18 Kyocera Corp 最大比合成送信ダイバーシティ装置
US6707807B1 (en) * 1997-06-17 2004-03-16 Siemens Aktiengesellschaft Reception time of messages in access channels of TDMA mobile communication system controlled by transmitting device
US6069913A (en) * 1997-08-20 2000-05-30 Radio Frequency Systems Inc. Method and apparatus for determining an identifying bit sequence in a radio frequency waveform
US6018647A (en) * 1997-11-10 2000-01-25 Electrocom Communication Systems, Inc. Diversity reception system
US6477197B1 (en) * 1998-06-30 2002-11-05 Arris International, Inc. Method and apparatus for a cable modem upstream RF switching system
DE19833967C2 (de) * 1998-07-28 2001-02-08 Siemens Ag Empfangsdiversitätsverfahren und Funk-Kommunikationssystem mit Diversitätsempfang
JP3109595B2 (ja) * 1998-08-28 2000-11-20 日本電気株式会社 受信ダイバーシティ制御方法およびダイバーシティ受信機
JP3602974B2 (ja) * 1998-11-10 2004-12-15 富士通株式会社 ダイバーシチ受信装置及びその方法
JP4232879B2 (ja) * 1999-09-02 2009-03-04 パナソニック株式会社 通信装置
SE521566C2 (sv) * 1999-10-15 2003-11-11 Ericsson Telefon Ab L M Förfarande och anordning för att ta emot analoga signaler som varierar inom ett stort signalområde i ett radiokommunikationssystem
AT410871B (de) * 1999-12-22 2003-08-25 Siemens Ag Oesterreich Verfahren zur auswertung der empfangssignale von n antennen eines mobilfunkempfängers und mobilfunkempfänger zur durchführung des verfahrens
US6477359B2 (en) * 2000-05-05 2002-11-05 Stephen B. Heppe Diversity reception for aeronautical packet data communications systems
JP3574057B2 (ja) * 2000-09-04 2004-10-06 三洋電機株式会社 無線受信システム及び方法
EP1404046B1 (en) * 2002-09-26 2006-11-08 Lucent Technologies Inc. Equalizer with two space-time filters and with a selector for choosing the filter with the best symbol estimate
JP2005142939A (ja) * 2003-11-07 2005-06-02 Fujitsu Ltd 無線受信機
EP1566899B1 (en) * 2004-02-23 2016-05-11 Harman Becker Automotive Systems GmbH Multipath compensation for diversity signal receivers
DE602004004503D1 (de) * 2004-04-02 2007-03-15 Suisse Electronique Microtech HF-Mehrbandempfänger mit Vorrichtung zur Reduzierung des Energieverbrauches
US20060178126A1 (en) * 2005-02-04 2006-08-10 Thompson Charles D Diversity receiver system having a shared local oscillator source
US7639999B2 (en) * 2005-04-08 2009-12-29 Qualcomm Incorporated System for diverse path antenna selection
JP4894530B2 (ja) * 2007-01-18 2012-03-14 パナソニック株式会社 受信装置とこれを用いた電子機器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61284125A (ja) * 1985-06-11 1986-12-15 Nec Corp ダイバ−シチ受信方式
US4672658A (en) * 1985-10-16 1987-06-09 At&T Company And At&T Bell Laboratories Spread spectrum wireless PBX
JPH0338932A (ja) * 1989-07-06 1991-02-20 Oki Electric Ind Co Ltd スペースダイバーシチ方式
JP2552928B2 (ja) * 1990-01-31 1996-11-13 三菱電機株式会社 アンテナ選択ダイバーシチ受信装置
JPH0787445B2 (ja) * 1990-08-01 1995-09-20 三菱電機株式会社 アンテナ選択ダイバーシティ受信装置
US5280637A (en) * 1991-09-18 1994-01-18 Motorola, Inc. Phase combining method and apparatus for use in a diversity receiver
US5345406A (en) * 1992-08-25 1994-09-06 Wireless Access, Inc. Bandpass sigma delta converter suitable for multiple protocols
US5392300A (en) * 1992-11-10 1995-02-21 Motorola, Inc. Dual mode radio communication unit
US5479453A (en) * 1993-12-29 1995-12-26 Tsci Corporation Wireless telecommunication digital receiver
US5461646A (en) * 1993-12-29 1995-10-24 Tcsi Corporation Synchronization apparatus for a diversity receiver

Also Published As

Publication number Publication date
FI114359B (fi) 2004-09-30
CN1134767A (zh) 1996-10-30
SE9601586D0 (sv) 1996-04-26
SE9601586L (sv) 1996-06-25
FI961736A7 (fi) 1996-04-22
FI961736A0 (fi) 1996-04-22
BR9506344A (pt) 1997-08-05
US5621770A (en) 1997-04-15
WO1996007247A1 (en) 1996-03-07
SE517617C2 (sv) 2002-06-25
DE19581148T1 (de) 1996-12-19
DE19581148C2 (de) 2001-02-01
CN1080040C (zh) 2002-02-27
JPH09504936A (ja) 1997-05-13
CA2174242A1 (en) 1996-03-07
CA2174242C (en) 2000-10-24

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