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SE9202541L - RADIO RECEIVERS, RADIO TRANSMITTERS FOR COMMUNICATION WITH A RECEIVER HAVING A FOREIGNER, AND A REPEATER FOR RECEIVING SIGNALS FROM A MAIN TRANSMITTER - Google Patents

RADIO RECEIVERS, RADIO TRANSMITTERS FOR COMMUNICATION WITH A RECEIVER HAVING A FOREIGNER, AND A REPEATER FOR RECEIVING SIGNALS FROM A MAIN TRANSMITTER

Info

Publication number
SE9202541L
SE9202541L SE9202541A SE9202541A SE9202541L SE 9202541 L SE9202541 L SE 9202541L SE 9202541 A SE9202541 A SE 9202541A SE 9202541 A SE9202541 A SE 9202541A SE 9202541 L SE9202541 L SE 9202541L
Authority
SE
Sweden
Prior art keywords
radio
antennas
receiver
foreigner
repeater
Prior art date
Application number
SE9202541A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9202541D0 (en
Inventor
A W D Watson
Original Assignee
Motorola Ltd
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 Ltd filed Critical Motorola Ltd
Publication of SE9202541D0 publication Critical patent/SE9202541D0/en
Publication of SE9202541L publication Critical patent/SE9202541L/en

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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • 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
    • H04B7/0891—Space-time diversity
    • H04B7/0894—Space-time diversity using different delays between antennas
    • 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
    • H04B7/0667—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 delayed versions of same signal
    • H04B7/0671—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 delayed versions of same signal using different delays between antennas
    • 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

Landscapes

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

Abstract

A radio receiver is provided comprising first (10) and second (11) antennas, physically spaced apart to provide diversity and an equalizer (20) for combining components of a received symbol which are separated in time. The signals received at the first and second antennas are combined in a combiner (19) and coupled to the equalizer. Delay means (18) are provided in the receive path of one of the antennas, for delaying signals received at that antenna with respect to signals received at the other antenna whereby the probability of destructive interference between the signals from the first and second antennas is significantly reduced. in accordance with a second aspect of the invention, a similar arrangement is provided for diversity in transmission. <IMAGE>
SE9202541A 1991-09-07 1992-09-04 RADIO RECEIVERS, RADIO TRANSMITTERS FOR COMMUNICATION WITH A RECEIVER HAVING A FOREIGNER, AND A REPEATER FOR RECEIVING SIGNALS FROM A MAIN TRANSMITTER SE9202541L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9119194A GB2259430B (en) 1991-09-07 1991-09-07 Radio receiver and transmitter providing diversity

Publications (2)

Publication Number Publication Date
SE9202541D0 SE9202541D0 (en) 1992-09-04
SE9202541L true SE9202541L (en) 1993-03-08

Family

ID=10701102

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9202541A SE9202541L (en) 1991-09-07 1992-09-04 RADIO RECEIVERS, RADIO TRANSMITTERS FOR COMMUNICATION WITH A RECEIVER HAVING A FOREIGNER, AND A REPEATER FOR RECEIVING SIGNALS FROM A MAIN TRANSMITTER

Country Status (13)

Country Link
JP (1) JPH06169273A (en)
KR (1) KR930007119A (en)
AU (1) AU2098192A (en)
CA (1) CA2076290A1 (en)
DE (1) DE4229573A1 (en)
FI (1) FI923987A7 (en)
FR (1) FR2682838B1 (en)
GB (1) GB2259430B (en)
HK (1) HK1001340A1 (en)
IL (1) IL102817A (en)
IT (1) IT1258477B (en)
PL (1) PL174158B1 (en)
SE (1) SE9202541L (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5659572A (en) 1993-11-22 1997-08-19 Interdigital Technology Corporation Phased array spread spectrum system and method
US5614914A (en) 1994-09-06 1997-03-25 Interdigital Technology Corporation Wireless telephone distribution system with time and space diversity transmission for determining receiver location
GB9424341D0 (en) * 1994-12-02 1995-01-18 Philips Electronics Uk Ltd Receiver diversity
CA2206311C (en) * 1994-12-29 2003-11-11 Motorola, Inc. Multiple access digital transmitter/receiver and method
US5579341A (en) * 1994-12-29 1996-11-26 Motorola, Inc. Multi-channel digital transceiver and method
GB2299488A (en) * 1995-03-16 1996-10-02 Motorola Ltd Radio antenna arrangement
JPH0974372A (en) * 1995-09-04 1997-03-18 Matsushita Electric Ind Co Ltd Spread spectrum wireless transmission receiver
DE19539312A1 (en) * 1995-10-23 1997-04-24 Grundig Emv Procedure for increasing the transmission security in radio alarm systems
EP0870370A1 (en) * 1995-12-28 1998-10-14 Qualcomm Incorporated Method and apparatus for providing antenna diversity in a portable radiotelephone
JPH10247869A (en) * 1997-03-04 1998-09-14 Nec Corp Diversity circuit
US5926503A (en) * 1997-08-27 1999-07-20 Motorola, Inc. DS-CDMA receiver and forward link diversity method
GB2332124B (en) * 1997-12-05 2002-07-17 British Broadcasting Corp Digital radio communication system
WO2000049730A1 (en) 1999-02-16 2000-08-24 Mitsubishi Denki Kabushiki Kaisha Radio communication system, transmitter and receiver
JP3379465B2 (en) 1999-03-03 2003-02-24 日本電気株式会社 Wireless communication system, base station and mobile device used for the same
DE10026538A1 (en) * 2000-05-27 2001-11-29 Deutsche Telekom Ag Method and diversity receiving device for receiving a multicarrier signal
US6748024B2 (en) * 2001-03-28 2004-06-08 Nokia Corporation Non-zero complex weighted space-time code for multiple antenna transmission
JP4731055B2 (en) * 2001-06-29 2011-07-20 パナソニック株式会社 Wireless communication apparatus and wireless communication method
US8233555B2 (en) 2004-05-17 2012-07-31 Qualcomm Incorporated Time varying delay diversity of OFDM
CN1842983A (en) * 2004-07-28 2006-10-04 松下电器产业株式会社 Diversity type receiver apparatus and receiving method
GB2423441A (en) * 2005-02-22 2006-08-23 Cambridge Silicon Radio Ltd Reducing signal paths required in an antenna diversity system
WO2006134366A1 (en) * 2005-06-17 2006-12-21 Cambridge Enterprise Limited Restoring corrupted audio signals
WO2007038969A1 (en) * 2005-10-05 2007-04-12 Telecom Italia S.P.A Method and system for multiple antenna communications, related apparatus and corresponding computer program product
JP2010183171A (en) 2009-02-03 2010-08-19 Toshiba Corp Receiver
JP2010187188A (en) * 2009-02-12 2010-08-26 Softbank Mobile Corp Radio relay device and radio relay system
GB2472074B (en) * 2009-07-24 2012-05-16 Vodafone Plc System and method utilising transmit diversity
GB2482761B (en) * 2011-06-17 2015-12-23 Airwave Solutions Ltd Communications system, apparatus and method
US9800315B2 (en) * 2013-10-10 2017-10-24 Sony Corporation Reception apparatus, reception method, and program
CA3150520A1 (en) * 2019-08-13 2021-02-18 Nanowave Technologies Inc. Transposed delay line oscillator and method
JP7486305B2 (en) * 2019-11-22 2024-05-17 日本無線株式会社 Wireless receiving device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB854720A (en) * 1958-05-12 1960-11-23 Lenkurt Electric Co Inc Improvements in or relating to electrical diversity signalling systems
JPS5255310A (en) * 1975-10-30 1977-05-06 Kokusai Denshin Denwa Co Ltd Phase control circuit
US4160952A (en) * 1978-05-12 1979-07-10 Bell Telephone Laboratories, Incorporated Space diversity receiver with combined step and continuous phase control
FR2628913B1 (en) * 1988-03-18 1990-06-29 Alcatel Thomson Faisceaux RECEIVER FOR SPACE DIVERSITY OVER-THE-AIR TRANSMISSION SYSTEM
FR2628914B1 (en) * 1988-03-18 1990-06-29 Alcatel Thomson Faisceaux RECEIVER FOR SPACE DIVERSITY WIRELESS TRANSMISSION SYSTEM, INCLUDING A DIVERSITY COMBINER
GB2237706A (en) * 1989-11-03 1991-05-08 Racal Res Ltd Radio communications link with diversity

Also Published As

Publication number Publication date
FI923987A0 (en) 1992-09-04
CA2076290A1 (en) 1993-03-08
AU2098192A (en) 1993-03-11
GB2259430A (en) 1993-03-10
IL102817A (en) 1996-01-19
DE4229573A1 (en) 1993-04-15
KR930007119A (en) 1993-04-22
FR2682838B1 (en) 1996-07-12
PL174158B1 (en) 1998-06-30
JPH06169273A (en) 1994-06-14
SE9202541D0 (en) 1992-09-04
FR2682838A1 (en) 1993-04-23
PL295855A1 (en) 1993-05-04
HK1001340A1 (en) 1998-06-12
IL102817A0 (en) 1993-02-21
GB2259430B (en) 1996-05-01
ITRM920645A1 (en) 1994-03-04
FI923987A7 (en) 1993-03-08
GB9119194D0 (en) 1991-10-23
IT1258477B (en) 1996-02-26
ITRM920645A0 (en) 1992-09-04

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