FI80365B - Foerfarande och anordning foer synkronisering av mottagaranordningar i ett digitaliskt multiplextransmissionssystem. - Google Patents

Foerfarande och anordning foer synkronisering av mottagaranordningar i ett digitaliskt multiplextransmissionssystem. Download PDF

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Publication number
FI80365B
FI80365B FI861323A FI861323A FI80365B FI 80365 B FI80365 B FI 80365B FI 861323 A FI861323 A FI 861323A FI 861323 A FI861323 A FI 861323A FI 80365 B FI80365 B FI 80365B
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Finland
Prior art keywords
symbols
synchronization
receiver
transmitted
data
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FI861323A
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English (en)
Finnish (fi)
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FI80365C (sv
FI861323A (fi
FI861323A0 (fi
Inventor
Alfons Eizenhoefer
Christoph Grauel
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Philips Nv
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Publication of FI861323A0 publication Critical patent/FI861323A0/fi
Publication of FI861323A publication Critical patent/FI861323A/fi
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Publication of FI80365B publication Critical patent/FI80365B/fi
Publication of FI80365C publication Critical patent/FI80365C/sv

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0602—Systems characterised by the synchronising information used
    • H04J3/0614—Systems characterised by the synchronising information used the synchronising signal being characterised by the amplitude, duration or polarity

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Communication Control (AREA)
  • Radar Systems Or Details Thereof (AREA)

Claims (9)

1. Förfarande för synkronisering av mottagaranord-ningarna i ett digitalt multiplextransmissionssystem, i 5 vilket förfarande separationen av enskilda transmissions-kanaler har utförts genom användning av olika datasymbol-grupper och symbolema frän multiplextransmissionssystemets enskilda signaltransmissionskanaler överförs tidssynkro-niskt med varandra, kännetecknat därav, att 10 synkroniseringssymboler (s1 - sn) placeras med bestämda intervaller och skickas samtidigt i ett flertal signaltransmissionskanaler och är sinsemellan identiska.
2. Förfarande enligt patentkravet 1, kännetecknat därav, att de enskilda kanalernas symboler 15 överförs i en bestämd gemensam bärvägsfas.
3. Förfarande enligt patentkravet 1, kännetecknat därav, att man använder synkroniseringssymboler (sx - sn), vilka skiljer sig frän alla andra datasym-boler (dx - da ). 20
4. Förfarande enligt patentkravet 1, känne tecknat därav, att de olika signaltransmissionskana-lemas data- och synkroniseringssymboler (dx - dB , sx - sn ) överförs enligt ett kodfördelnings-multiplexförfarande.
5. Förfarande enligt patentkravet 1, k ä n n e-25 tecknat därav, att mottagaren i mottagaranordningar-na pä basen av de mottagna synkroniseringssymbolerna (sx-sn ) definierar signaltransmissionskanalens momentana transmissionsfaktorer och mottagaren anpassar kontinuerligt sinä egenskaper tili nämnda kanalegenskaper. 30
6. Förfarande enligt patentkravet 1, känne tecknat därav, att synkroniseringssymbolerna (sx-sn) överförs vid regelbundna intervaller, vilka mottagar-anordningarnas mottagare känner tili.
7. Förfarande enligt patentkravet 1, k ä n n e-35 tecknat därav, att datasymbolerna (dx - dii ) överförs 22 8 0 3 6 5 i blockföljd, att som en synkroniseringssymbol (sx - sn ) överförs alltid en av minst tv4 olika symboler (c0 , c0 ) att synkroniseringssymbolerna (c0 - c0) överförs i definierad följd vid datablockens definierade tidpunkter, att synkro-5 niseringssymbolernas (c0 - c0 ) följd och tidpunkter är kända för mottagaranordningamas mottagare, och att motta-garen definierar utgäende frärt de mottagna synkroniserings-symbolernas (c0 - c0) mottagningsstund och följd tidpunkten för datasymbolblockets (d1 - dB) början. 10
8. Förfarande enligt patentkravet 1, känne- t e c k n a t därav, att datasymbolerna (dx - dB) över-försi blockföljd, att synkroniseringssymbolerna (sx - sn) överförs vid datablockets bestämda tidpunkter, vilka är kända av mottagaranordningamas mottagare, och att mottaga-15 ren definierar utgäende frän de mottagna synkroniserings-symbolernas (sL - sn) tidpunkt tidpunkten för datasymbolblockets (dj - dm ) början.
9. Kretsanordning för utförande av förfarandet enligt patentkravet 1, speciellt i ett digitalt radiotrans-20 missionssystem, i vilket ett flertal signaltransmissions-kanaler bildas i den fasta radiostationen (BS) genom an-vändning av en kombination av tidfördelningsmultiplex, kodfördelningsmultiplex- och frekvensfördelningsmultiplex metoder, kännetecknad därav, att en kontroll-25 anordning (15) och en synkroniseringskrets (4) har anord-nats i den fasta radiostationen (BS), att kontrollanord-ningen (15), som är kopplad tili synkroniseringskretsen (4), kontrollerar synkroniseringssymbolernas (sx - sn), vilka synkroniseringskretsen (4) producerar, placering 30 mellan datasymbolerna (dj - dB), sä att synkroniseringssymbolerna (Sj - sn) överförs i signaltransmissionskanalerna samtidigt, att den fasta radiostationen (BS) innehäller en tili kontrollanordningen (15) kopplad kodgenerator (5), vilken kontrollerad av kontrollanordningen (15) väljer 35 datasymboler (dt - dm) och synkroniseringssymboler (Sj- 23 80 365 sn ) ur sitt symbollager, att de rörliga radiostationerna (MS) omfattar en kontrollanordnlng (26), flera korrelatorer (23, 24, 25), en anordnlng (30), flera stickprovskretsar (27, 28) och ett beslutsstege (29), att kontrollanord-5 ningen (26), vilken är kopplad till korrelatorema (23, 24, 25), utför placeringen av synkroniseringssymboler och data-symboler (s1 - sn; dx -dm ), att anordningen (30) Sr kopplad till kontrollanordningen (26), till en första korrelator (23), till stickprovskretsarna (27, 28) och till besluts-10 steget (29) och väger stickprovsvärdena proportionellt till ekonas amplitud, vilken mätts under synkroniseringen, och att belutsstadiet (29), som är kopplat till stickprovskretsarna (27, 28), utför bäde förvandlingen frän symbol till bit och ocksä estimation av polariteten.
FI861323A 1985-03-29 1986-03-26 Förfarande och anordning för synkronisering av mottagaranordningar i e tt digitaliskt multiplextransmissionssystem FI80365C (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853511430 DE3511430A1 (de) 1985-03-29 1985-03-29 Verfahren zur synchronisierung der empfangseinrichtungen in einem digitalen multiplex-uebertragungssystem
DE3511430 1985-03-29

Publications (4)

Publication Number Publication Date
FI861323A0 FI861323A0 (fi) 1986-03-26
FI861323A FI861323A (fi) 1986-09-30
FI80365B true FI80365B (fi) 1990-01-31
FI80365C FI80365C (sv) 1990-05-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
FI861323A FI80365C (sv) 1985-03-29 1986-03-26 Förfarande och anordning för synkronisering av mottagaranordningar i e tt digitaliskt multiplextransmissionssystem

Country Status (11)

Country Link
US (1) US4688210A (sv)
EP (1) EP0196723B1 (sv)
JP (1) JP2532835B2 (sv)
AT (1) ATE66326T1 (sv)
AU (1) AU580857B2 (sv)
CA (1) CA1251875A (sv)
DE (2) DE3511430A1 (sv)
DK (1) DK165091C (sv)
FI (1) FI80365C (sv)
NO (1) NO170446C (sv)
ZA (1) ZA862054B (sv)

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DK165091C (da) 1993-02-22
NO170446B (no) 1992-07-06
JPS61227439A (ja) 1986-10-09
NO170446C (no) 1992-10-14
DK165091B (da) 1992-10-05
FI80365C (sv) 1990-05-10
US4688210A (en) 1987-08-18
NO861228L (no) 1986-09-30
DE3680805D1 (de) 1991-09-19
FI861323A (fi) 1986-09-30
DK128986D0 (da) 1986-03-20
AU5531086A (en) 1986-10-02
CA1251875A (en) 1989-03-28
AU580857B2 (en) 1989-02-02
JP2532835B2 (ja) 1996-09-11
DK128986A (da) 1986-09-30
EP0196723A2 (de) 1986-10-08
DE3511430A1 (de) 1986-10-02
ATE66326T1 (de) 1991-08-15
EP0196723A3 (en) 1987-10-07
ZA862054B (en) 1987-10-28
FI861323A0 (fi) 1986-03-26
EP0196723B1 (de) 1991-08-14

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