CA2094193A1 - Method and apparatus for providing time diversity - Google Patents

Method and apparatus for providing time diversity

Info

Publication number
CA2094193A1
CA2094193A1 CA2094193A CA2094193A CA2094193A1 CA 2094193 A1 CA2094193 A1 CA 2094193A1 CA 2094193 A CA2094193 A CA 2094193A CA 2094193 A CA2094193 A CA 2094193A CA 2094193 A1 CA2094193 A1 CA 2094193A1
Authority
CA
Canada
Prior art keywords
channel code
weighted
digital signal
symbol copies
time 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
CA2094193A
Other languages
French (fr)
Other versions
CA2094193C (en
Inventor
Vijitha Weerackody
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 CA2094193A1 publication Critical patent/CA2094193A1/en
Application granted granted Critical
Publication of CA2094193C publication Critical patent/CA2094193C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/02Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity

Abstract

The invention provides a method and apparatus for transmitting digital signal information to a receiver using a plurality of antennas. The invention involves applying a channel code to a digital signal producing one or more symbols. A
plurality of symbol copies is made and each copy is weighted by a distinct time varying function. Each antenna transmits a signal based on one of the weighted symbol copies. Any channel code may be used with the invention, such as a convolutional channel code or block channel code. Weighting provided to symbol copies may involve application of an amplitude gain, phase shift, or both. The present invention may be used in combination with either or both conventional interleavers and constellation mappers.
CA002094193A 1992-05-29 1993-04-16 Method and apparatus for providing time diversity Expired - Fee Related CA2094193C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US890,977 1992-05-29
US07/890,977 US5305353A (en) 1992-05-29 1992-05-29 Method and apparatus for providing time diversity

Publications (2)

Publication Number Publication Date
CA2094193A1 true CA2094193A1 (en) 1993-11-30
CA2094193C CA2094193C (en) 1998-08-25

Family

ID=25397412

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002094193A Expired - Fee Related CA2094193C (en) 1992-05-29 1993-04-16 Method and apparatus for providing time diversity

Country Status (4)

Country Link
US (2) US5305353A (en)
EP (1) EP0572171A1 (en)
JP (1) JP2859513B2 (en)
CA (1) CA2094193C (en)

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Also Published As

Publication number Publication date
US5305353A (en) 1994-04-19
JPH0637683A (en) 1994-02-10
EP0572171A1 (en) 1993-12-01
JP2859513B2 (en) 1999-02-17
CA2094193C (en) 1998-08-25
US5457712A (en) 1995-10-10

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