SE9000566L - Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner - Google Patents

Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner

Info

Publication number
SE9000566L
SE9000566L SE9000566A SE9000566A SE9000566L SE 9000566 L SE9000566 L SE 9000566L SE 9000566 A SE9000566 A SE 9000566A SE 9000566 A SE9000566 A SE 9000566A SE 9000566 L SE9000566 L SE 9000566L
Authority
SE
Sweden
Prior art keywords
tij
delta
viterbi
signals
metric values
Prior art date
Application number
SE9000566A
Other languages
English (en)
Swedish (sv)
Other versions
SE465597B (sv
SE9000566D0 (sv
Inventor
O T Baeckstroem
Original Assignee
Ericsson Telefon Ab L M
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
Publication of SE9000566D0 publication Critical patent/SE9000566D0/xx
Priority to SE9000566A priority Critical patent/SE465597B/sv
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to NZ236924A priority patent/NZ236924A/xx
Priority to EP91850015A priority patent/EP0443997B1/en
Priority to DE69105298T priority patent/DE69105298T2/de
Priority to AT91850015T priority patent/ATE114906T1/de
Priority to DK91850015.8T priority patent/DK0443997T3/da
Priority to ES91850015T priority patent/ES2064981T3/es
Priority to KR1019910001970A priority patent/KR960013962B1/ko
Priority to US07/652,419 priority patent/US5191598A/en
Priority to MYPI91000204A priority patent/MY104741A/en
Priority to JP03022282A priority patent/JP3113293B2/ja
Priority to AU71074/91A priority patent/AU634629B2/en
Priority to CA002036423A priority patent/CA2036423C/en
Priority to CN91101088A priority patent/CN1025400C/zh
Publication of SE9000566L publication Critical patent/SE9000566L/
Publication of SE465597B publication Critical patent/SE465597B/sv
Priority to HK34495A priority patent/HK34495A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03184—Details concerning the metric
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03331—Arrangements for the joint estimation of multiple sequences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
SE9000566A 1990-02-16 1990-02-16 Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner SE465597B (sv)

Priority Applications (15)

Application Number Priority Date Filing Date Title
SE9000566A SE465597B (sv) 1990-02-16 1990-02-16 Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner
NZ236924A NZ236924A (en) 1990-02-16 1991-01-28 Viterbi receiver: estimating transmission function for each antenna signal
EP91850015A EP0443997B1 (en) 1990-02-16 1991-01-29 A method of reducing the influence of fading of a Viterbi-receiver having at least two antennas
DE69105298T DE69105298T2 (de) 1990-02-16 1991-01-29 Verfahren zur Fadingverminderung eines Viterbi-Empfängers mit zumindestens zwei Antennen.
AT91850015T ATE114906T1 (de) 1990-02-16 1991-01-29 Verfahren zur fadingverminderung eines viterbi- empfängers mit zumindestens zwei antennen.
DK91850015.8T DK0443997T3 (da) 1990-02-16 1991-01-29 Fremgangsmåde til reduktion af virkningen af fading i en viterbi-modtager med i det mindste to antenner
ES91850015T ES2064981T3 (es) 1990-02-16 1991-01-29 Un metodo de reducir la influencia del desvanecimiento de la se¦al en un receptor viterbi que tiene al menos dos antenas.
KR1019910001970A KR960013962B1 (ko) 1990-02-16 1991-02-05 두개 이상의 안테나를 갖는 비터비 수신기의 페이딩의 영향을 감소시키는 방법
US07/652,419 US5191598A (en) 1990-02-16 1991-02-07 System for reducing the affects of signal fading on received signals
MYPI91000204A MY104741A (en) 1990-02-16 1991-02-09 A method of reducing the influence of fading of a viterbi receiver having at least two antennas
JP03022282A JP3113293B2 (ja) 1990-02-16 1991-02-15 少なくとも２個のアンテナを有するビタビ受信機のフェージングの影響を減少させる方法
AU71074/91A AU634629B2 (en) 1990-02-16 1991-02-15 A method of reducing the influence of fading of a viterbi- receiver having at least two antennas
CA002036423A CA2036423C (en) 1990-02-16 1991-02-15 Method of reducing the influence of fading of a viterbi receiver having at least two antennas
CN91101088A CN1025400C (zh) 1990-02-16 1991-02-18 具有至少两个天线的维特毕收信机衰减影响的减小方法
HK34495A HK34495A (en) 1990-02-16 1995-03-09 A method of reducing the influence of fading of a viterbi-receiver having at least two antennas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9000566A SE465597B (sv) 1990-02-16 1990-02-16 Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner

Publications (3)

Publication Number Publication Date
SE9000566D0 SE9000566D0 (sv) 1990-02-16
SE9000566L true SE9000566L (sv) 1991-08-17
SE465597B SE465597B (sv) 1991-09-30

Family

ID=20378589

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000566A SE465597B (sv) 1990-02-16 1990-02-16 Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner

Country Status (15)

Country Link
US (1) US5191598A ( )
EP (1) EP0443997B1 ( )
JP (1) JP3113293B2 ( )
KR (1) KR960013962B1 ( )
CN (1) CN1025400C ( )
AT (1) ATE114906T1 ( )
AU (1) AU634629B2 ( )
CA (1) CA2036423C ( )
DE (1) DE69105298T2 ( )
DK (1) DK0443997T3 ( )
ES (1) ES2064981T3 ( )
HK (1) HK34495A ( )
MY (1) MY104741A ( )
NZ (1) NZ236924A ( )
SE (1) SE465597B ( )

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DE4224214C2 (de) * 1992-07-22 1995-02-09 Deutsche Forsch Luft Raumfahrt Verfahren zur quellengesteuerten Kanaldecodierung durch Erweiterung des Viterbi-Algorithmus
US5432821A (en) * 1992-12-02 1995-07-11 University Of Southern California System and method for estimating data sequences in digital transmissions
US5289499A (en) * 1992-12-29 1994-02-22 At&T Bell Laboratories Diversity for direct-sequence spread spectrum systems
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US5668837A (en) * 1993-10-14 1997-09-16 Ericsson Inc. Dual-mode radio receiver for receiving narrowband and wideband signals
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US6151310A (en) * 1994-03-24 2000-11-21 Ericsson Inc. Dividable transmit antenna array for a cellular base station and associated method
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US5838739A (en) * 1996-03-29 1998-11-17 Ericsson Inc. Channel estimator circuitry, and associated method, for a digital communication system
US5796788A (en) * 1996-04-19 1998-08-18 Ericsson Inc. Method and apparatus for interference decorrelation in time and space
US5727028A (en) * 1996-07-31 1998-03-10 Motorola, Inc. Method and apparatus for receiving a signal in a digital radio frequency communication system
US5881073A (en) * 1996-09-20 1999-03-09 Ericsson Inc. Convolutional decoding with the ending state decided by CRC bits placed inside multiple coding bursts
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Also Published As

Publication number Publication date
JPH04215334A (ja) 1992-08-06
SE465597B (sv) 1991-09-30
DE69105298D1 (de) 1995-01-12
US5191598A (en) 1993-03-02
EP0443997A1 (en) 1991-08-28
NZ236924A (en) 1993-03-26
CN1025400C (zh) 1994-07-06
EP0443997B1 (en) 1994-11-30
DE69105298T2 (de) 1995-04-13
DK0443997T3 (da) 1995-05-08
AU7107491A (en) 1991-08-22
ATE114906T1 (de) 1994-12-15
AU634629B2 (en) 1993-02-25
CA2036423C (en) 1996-12-17
KR960013962B1 (ko) 1996-10-10
MY104741A (en) 1994-05-31
CN1054156A (zh) 1991-08-28
HK34495A (en) 1995-03-17
ES2064981T3 (es) 1995-02-01
JP3113293B2 (ja) 2000-11-27
KR910016163A (ko) 1991-09-30
CA2036423A1 (en) 1991-08-17
SE9000566D0 (sv) 1990-02-16

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