IT1258477B - RECEIVER AND RADIO TRANSMITTER SUITABLE TO WORK IN DIVERSITY - Google Patents

RECEIVER AND RADIO TRANSMITTER SUITABLE TO WORK IN DIVERSITY

Info

Publication number
IT1258477B
IT1258477B ITRM920645A ITRM920645A IT1258477B IT 1258477 B IT1258477 B IT 1258477B IT RM920645 A ITRM920645 A IT RM920645A IT RM920645 A ITRM920645 A IT RM920645A IT 1258477 B IT1258477 B IT 1258477B
Authority
IT
Italy
Prior art keywords
antenna
diversity
receiver
work
signals received
Prior art date
Application number
ITRM920645A
Other languages
Italian (it)
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 filed Critical
Publication of ITRM920645A0 publication Critical patent/ITRM920645A0/en
Publication of ITRM920645A1 publication Critical patent/ITRM920645A1/en
Application granted granted Critical
Publication of IT1258477B publication Critical patent/IT1258477B/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

Oggetto dell'invenzione è un radio ricevitore comprendente una prima (10) ed una seconda (11) antenna, fisicamente distanziate in modo da fornire diversità, nonché un equalizzatore (20) per combinare le componenti di un simbolo ricevuto le quali sono separate nel tempo. I segnali ricevuti nella prima e nella seconda antenna vengono combinate in un combinatore (19) ed applicati all'equalizzatore. Mezzi di ritardo variabile (18) sono forniti nel percorso di ricezione di una delle antenne, per ritardare i segnali ricevuti su tale antenna rispetto ai segnali ricevuti sull'altra antenna, per cui viene significativamente ridotta la probabilità di interferenza distruttiva fra i segnali provenienti dalla prima e dalla seconda antenna. In conformità con un secondo aspetto dell'invenzione, una analoga disposizione viene fornita per la diversità in trasmissione.The object of the invention is a radio receiver comprising a first (10) and a second (11) antenna, physically spaced so as to provide diversity, as well as an equalizer (20) to combine the components of a received symbol which are separated over time . The signals received in the first and second antenna are combined in a combiner (19) and applied to the equalizer. Variable delay means (18) are provided in the reception path of one of the antennas, to delay the signals received on this antenna with respect to the signals received on the other antenna, whereby the probability of destructive interference between the signals coming from the first and second antenna. In accordance with a second aspect of the invention, a similar arrangement is provided for diversity in transmission.

ITRM920645A 1991-09-07 1992-09-04 RECEIVER AND RADIO TRANSMITTER SUITABLE TO WORK IN DIVERSITY IT1258477B (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 (3)

Publication Number Publication Date
ITRM920645A0 ITRM920645A0 (en) 1992-09-04
ITRM920645A1 ITRM920645A1 (en) 1994-03-04
IT1258477B true IT1258477B (en) 1996-02-26

Family

ID=10701102

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM920645A IT1258477B (en) 1991-09-07 1992-09-04 RECEIVER AND RADIO TRANSMITTER SUITABLE TO WORK IN DIVERSITY

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
US5579341A (en) * 1994-12-29 1996-11-26 Motorola, Inc. Multi-channel digital transceiver and method
WO1996021305A1 (en) * 1994-12-29 1996-07-11 Motorola Inc. Multiple access digital transmitter and receiver
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
JP2000503184A (en) * 1995-12-28 2000-03-14 カルコム・インコーポレーテッド Method and apparatus for providing antenna diversity in a portable wireless telephone
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
DE69940111D1 (en) 1999-02-16 2009-01-29 Mitsubishi Electric Corp RADIO TRANSMISSION 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
US20060293006A1 (en) * 2004-07-28 2006-12-28 Tomohiko Taniguchi 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
GB2427338B (en) * 2005-06-17 2010-01-20 Univ Cambridge Tech 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
WO2021026655A1 (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
PL295855A1 (en) 1993-05-04
AU2098192A (en) 1993-03-11
FR2682838B1 (en) 1996-07-12
FI923987A7 (en) 1993-03-08
IL102817A (en) 1996-01-19
DE4229573A1 (en) 1993-04-15
JPH06169273A (en) 1994-06-14
GB2259430B (en) 1996-05-01
SE9202541L (en) 1993-03-08
GB2259430A (en) 1993-03-10
CA2076290A1 (en) 1993-03-08
IL102817A0 (en) 1993-02-21
KR930007119A (en) 1993-04-22
ITRM920645A1 (en) 1994-03-04
FR2682838A1 (en) 1993-04-23
FI923987A0 (en) 1992-09-04
GB9119194D0 (en) 1991-10-23
ITRM920645A0 (en) 1992-09-04
PL174158B1 (en) 1998-06-30
SE9202541D0 (en) 1992-09-04
HK1001340A1 (en) 1998-06-12

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960722