FI112746B - Förfarande och anordning för tidsinställning av signaler för mottagning i ett kodmultiplexerat fleranvändarkommunikationssystem - Google Patents

Förfarande och anordning för tidsinställning av signaler för mottagning i ett kodmultiplexerat fleranvändarkommunikationssystem Download PDF

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Publication number
FI112746B
FI112746B FI953407A FI953407A FI112746B FI 112746 B FI112746 B FI 112746B FI 953407 A FI953407 A FI 953407A FI 953407 A FI953407 A FI 953407A FI 112746 B FI112746 B FI 112746B
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Finland
Prior art keywords
signals
signal
group
basis
base station
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FI953407A
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English (en)
Finnish (fi)
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FI953407A0 (sv
FI953407A (sv
Inventor
Eugene Bruckert
Richard Sonnentag
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Motorola Inc
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Application filed by Motorola Inc filed Critical Motorola Inc
Publication of FI953407A0 publication Critical patent/FI953407A0/sv
Publication of FI953407A publication Critical patent/FI953407A/sv
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Publication of FI112746B publication Critical patent/FI112746B/sv

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    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
    • H04L7/007—Detection of the synchronisation error by features other than the received signal transition detection of error based on maximum signal power, e.g. peak value, maximizing autocorrelation

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (4)

1. Förfarande för tidsinställning av signaler i ett mikrocellulärt bandspridnings- (CDMA, code-division multiple access) kommunikationssystem, kanne-5 tecknat av att förfarandet omfattar följande steg: vid en första och andra basstation mottas i en första respektive andra mikrocell (403, 406) signaler sända av en motsvarande första respektive andra grupp abonnent-anordningar, 10 för varje signalgrupp bestäms en tidsposition för signalerna i den mottagna gruppen i förhällande tili varandra pä basis av effektestimat; tidspositionen för varje grupp jämförs, och frän den första basstationen (409) sänds en inställnings- 15 signal pä basis av jämförelsesteget tili motsvarande första abonnentanordningsgrupp pä sä sätt, att den första basstationen mottar efterföljande signaler sända av den första abonnentanordningsgruppen i den första mikrocellen ·' (403) väsentligen tidsinställda med signaler mottagna av * 20 den andra basstationen (412) i den andra mikrocellen : (406).
> : 2. Förfarande enligt patentkrav 1, kanne- tecknat av att steget, där varje mottagen signals tidsposition bestäms pä basis av signalernas effekt-25 estimat, vidare omf attar ett steg för bestämning av de mottagna signalernas tidsposition pä basis av ankomsttiden för det största effektestimatet för ett flertal försenade 13 1 12746 strälar, som representerar signalerna.
3. Förfarande enligt patentkrav 1, k ä n n e -tecknat av att steget, där varje mottagen signals tidsposition bestäms pä basis av signalernas effekt- 5 estimat, vidare omfattar ett steg för bestämning av varje mottagen signals tidsposition pä basis av medelvärdet av ankomsttiderna för ett flertal försenade strälar, som representerar signalerna.
4. Förfarande enligt patentkrav 1, kanne-10 tecknat av att varje abonnentanordning i den första gruppen är anordnad pä basis av den gemensamma tid som insällningssignalen representerar. 15
FI953407A 1993-11-30 1995-07-12 Förfarande och anordning för tidsinställning av signaler för mottagning i ett kodmultiplexerat fleranvändarkommunikationssystem FI112746B (sv)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/159,633 US5446727A (en) 1993-11-30 1993-11-30 Method and apparatus for time aligning signals for reception in a code-division multiple access communication system
US15963393 1993-11-30
US9412635 1994-11-03
PCT/US1994/012635 WO1995015626A1 (en) 1993-11-30 1994-11-03 Time alignment in a cdma system

Publications (3)

Publication Number Publication Date
FI953407A0 FI953407A0 (sv) 1995-07-12
FI953407A FI953407A (sv) 1995-07-12
FI112746B true FI112746B (sv) 2003-12-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FI953407A FI112746B (sv) 1993-11-30 1995-07-12 Förfarande och anordning för tidsinställning av signaler för mottagning i ett kodmultiplexerat fleranvändarkommunikationssystem

Country Status (13)

Country Link
US (1) US5446727A (sv)
EP (1) EP0695484B1 (sv)
JP (1) JP3565856B2 (sv)
KR (1) KR0177268B1 (sv)
CN (1) CN1065094C (sv)
BR (1) BR9405751A (sv)
DE (1) DE4499436B3 (sv)
FI (1) FI112746B (sv)
GB (1) GB2290200B (sv)
RU (1) RU2122290C1 (sv)
SE (1) SE521574C2 (sv)
SG (1) SG69960A1 (sv)
WO (1) WO1995015626A1 (sv)

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Also Published As

Publication number Publication date
FI953407A0 (sv) 1995-07-12
GB2290200B (en) 1998-07-22
BR9405751A (pt) 1995-12-05
EP0695484A1 (en) 1996-02-07
CN1116889A (zh) 1996-02-14
US5446727A (en) 1995-08-29
GB9515712D0 (en) 1995-10-11
GB2290200A (en) 1995-12-13
FI953407A (sv) 1995-07-12
KR0177268B1 (ko) 1999-05-15
SG69960A1 (en) 2000-01-25
EP0695484B1 (en) 2000-07-26
CN1065094C (zh) 2001-04-25
SE9502704D0 (sv) 1995-07-27
DE4499436B3 (de) 2005-07-28
WO1995015626A1 (en) 1995-06-08
SE521574C2 (sv) 2003-11-11
EP0695484A4 (en) 1997-09-03
SE9502704L (sv) 1995-09-29
RU2122290C1 (ru) 1998-11-20
KR960700595A (ko) 1996-01-20
JP3565856B2 (ja) 2004-09-15
JPH10508435A (ja) 1998-08-18

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