CA2090513A1 - Method and apparatus for providing antenna diversity - Google Patents

Method and apparatus for providing antenna diversity

Info

Publication number
CA2090513A1
CA2090513A1 CA2090513A CA2090513A CA2090513A1 CA 2090513 A1 CA2090513 A1 CA 2090513A1 CA 2090513 A CA2090513 A CA 2090513A CA 2090513 A CA2090513 A CA 2090513A CA 2090513 A1 CA2090513 A1 CA 2090513A1
Authority
CA
Canada
Prior art keywords
symbols
codeword
sequence
received
antenna diversity
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.)
Granted
Application number
CA2090513A
Other languages
French (fr)
Other versions
CA2090513C (en
Inventor
Nambirajan Seshadri
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co 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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2090513A1 publication Critical patent/CA2090513A1/en
Application granted granted Critical
Publication of CA2090513C publication Critical patent/CA2090513C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—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 antenna switching
    • H04B7/0604—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 antenna switching with predefined switching scheme
    • 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
    • H04B7/0669—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 channel coding between antennas

Abstract

A method and apparatus providing antenna diversity is disclosed. A set of bits of a digital signal are used to generate a codeword of N symbols. Codewords are provided according to a channel code having a minimum Hamming distance, dmin, where 2~dm~N. N signals representing N symbols of a codeword are transmitted with N different antennas. The N transmitted signals are received and isolated. A sequence of N received symbols is formed from the isolated symbols and compared with one or more valid codewords to associate the sequence with a codeword. A set of bits based on a codeword associated with the received sequence is generated.
CA002090513A 1992-03-31 1993-02-26 Method and apparatus for providing antenna diversity Expired - Fee Related CA2090513C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US860,830 1992-03-31
US07/860,830 US5479448A (en) 1992-03-31 1992-03-31 Method and apparatus for providing antenna diversity

Publications (2)

Publication Number Publication Date
CA2090513A1 true CA2090513A1 (en) 1993-10-01
CA2090513C CA2090513C (en) 1998-02-03

Family

ID=25334124

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002090513A Expired - Fee Related CA2090513C (en) 1992-03-31 1993-02-26 Method and apparatus for providing antenna diversity

Country Status (6)

Country Link
US (1) US5479448A (en)
EP (1) EP0566257B1 (en)
JP (1) JP3096538B2 (en)
CA (1) CA2090513C (en)
DE (1) DE69322119T2 (en)
ES (1) ES2125302T3 (en)

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US7260369B2 (en) 2005-08-03 2007-08-21 Kamilo Feher Location finder, tracker, communication and remote control system
US9373251B2 (en) 1999-08-09 2016-06-21 Kamilo Feher Base station devices and automobile wireless communication systems
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US20030069043A1 (en) * 2001-10-10 2003-04-10 Pallav Chhaochharia Methods and devices for wirelessly transmitting data in dependence on location
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US8064528B2 (en) 2003-05-21 2011-11-22 Regents Of The University Of Minnesota Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems
KR100584329B1 (en) * 2003-09-09 2006-05-26 삼성전자주식회사 Distortion compensation apparatus for asynchronous wcdma communication system when a frame reference signal is phase-slewed and method therefor
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Also Published As

Publication number Publication date
EP0566257B1 (en) 1998-11-18
DE69322119T2 (en) 1999-05-27
ES2125302T3 (en) 1999-03-01
CA2090513C (en) 1998-02-03
US5479448A (en) 1995-12-26
DE69322119D1 (en) 1998-12-24
JP3096538B2 (en) 2000-10-10
JPH0621856A (en) 1994-01-28
EP0566257A1 (en) 1993-10-20

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Legal Events

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