CA2088111A1 - Method and apparatus for using orthogonal coding in a communication system - Google Patents

Method and apparatus for using orthogonal coding in a communication system

Info

Publication number
CA2088111A1
CA2088111A1 CA2088111A CA2088111A CA2088111A1 CA 2088111 A1 CA2088111 A1 CA 2088111A1 CA 2088111 A CA2088111 A CA 2088111A CA 2088111 A CA2088111 A CA 2088111A CA 2088111 A1 CA2088111 A1 CA 2088111A1
Authority
CA
Canada
Prior art keywords
group
samples
subsequently
block
symbols
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
CA2088111A
Other languages
French (fr)
Other versions
CA2088111C (en
Inventor
David D. Falconer
Fuyun Ling
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.)
Motorola Mobility LLC
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
Priority claimed from US07/839,528 external-priority patent/US5204874A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of CA2088111A1 publication Critical patent/CA2088111A1/en
Application granted granted Critical
Publication of CA2088111C publication Critical patent/CA2088111C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/12—Generation of orthogonal codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Error Detection And Correction (AREA)

Abstract

A method and apparatus is provided for encoding and decoding. In encoding, bits are encoded into symbols such that maximum likelihood decoding is facilitated. Groups of symbols are translated by either interleaving by group each group within a block and subsequently deriving an orthogonal code from each group or deriving an orthogonal code from each group and subsequently interleaving by code each code within a block. In decoding, groups of samples are transformed by either generating metrics and index symbols for each group of samples and subsequently deinterleaving by group each group of metrics within a block or deinterleaving by group each group of samples within a block and subsequently generating metrics and index symbols for each deinterleaved group of samples. Each metric represents the confidence that a group of samples is a particular orthogonal code. Subsequently, maximum likelihood decoding generates an estimated bit from the index symbols and metrics.
CA002088111A 1992-02-19 1993-01-26 Method and apparatus for using orthogonal coding in a communication system Expired - Lifetime CA2088111C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/839,528 1992-02-19
US07/839,528 US5204874A (en) 1991-08-28 1992-02-19 Method and apparatus for using orthogonal coding in a communication system

Publications (2)

Publication Number Publication Date
CA2088111A1 true CA2088111A1 (en) 1993-08-20
CA2088111C CA2088111C (en) 1998-04-07

Family

ID=25279979

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002088111A Expired - Lifetime CA2088111C (en) 1992-02-19 1993-01-26 Method and apparatus for using orthogonal coding in a communication system

Country Status (5)

Country Link
JP (1) JPH0831840B2 (en)
KR (1) KR960008960B1 (en)
CA (1) CA2088111C (en)
IL (1) IL104640A (en)
MX (1) MX9300902A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1826938A1 (en) 1998-07-24 2007-08-29 Matsushita Electric Industrial Co., Ltd. CDMA radio communication system and method

Also Published As

Publication number Publication date
CA2088111C (en) 1998-04-07
KR960008960B1 (en) 1996-07-10
KR930018880A (en) 1993-09-22
JPH0831840B2 (en) 1996-03-27
IL104640A (en) 1996-09-12
IL104640A0 (en) 1993-08-18
JPH0697913A (en) 1994-04-08
MX9300902A (en) 1993-08-01

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MKEX Expiry

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