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KR970705264A - 공통파 네트 워크에서 다중 반송파 전송(multiple carrier transmisson in common wave broadcasting networks) - Google Patents

공통파 네트 워크에서 다중 반송파 전송(multiple carrier transmisson in common wave broadcasting networks) Download PDF

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Publication number
KR970705264A
KR970705264A KR1019970700313A KR19970700313A KR970705264A KR 970705264 A KR970705264 A KR 970705264A KR 1019970700313 A KR1019970700313 A KR 1019970700313A KR 19970700313 A KR19970700313 A KR 19970700313A KR 970705264 A KR970705264 A KR 970705264A
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data
symbols
ofdm transmission
transmission frame
guard interval
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KR1019970700313A
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KR100335035B1 (ko
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크리스트프리트 베크
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions

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  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Radio Relay Systems (AREA)
  • Waveguides (AREA)
  • Television Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Circuits Of Receivers In General (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmitters (AREA)
  • Handcart (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

원하는 신호 용량이 디지탈 코딩된 데이타의 OFDM변조중 감소되는 것을 막기 위해, 개개의 OFDM전송 프레임 헤드에서 제어 심볼 보호 간격이 개개의 OFDM전송 프레임의 원하는 데이타 영역에서 데이타 심볼 보호 간격보다 더 크다. 데이타 심볼 보호 간격의 길이는 복조중에 결정되고 데이타 심볼 스캐닝 시간은 결정된 보호 간격의 길이에 따라 결정된다.

Description

공통파 네트 워크에서 다중 반송파 전송(MULTIPLE CARRIER TRANSMISSION IN COMMON WAVE BROADCASTING NETWORKS)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명에 따른OFDM전송 프레임의 3가지 예를 든 개략적인 설계도.
제3도는 2도에 따른OFDM전송 프레임을 발생하기 위한 OFDM변조기의 블록도.
제4도는 2도에 따른OFDM전송 프레임을 복조하기 위한 OFDM 복조기의 블록도.

Claims (3)

  1. OFDM심볼의 타임 시퀀스가 발생되고, 상기 심볼은 연속 OFDM전송 프레임으로 패턴화되고, 개개의 OFDM전송 프레임은 하나 또는 수개의 제어 심볼을 갖는 프레임헤드와 다수의 데이타 심볼을 가진 유효 데이타 영역으로 구성되고, 상기 연속 제어 심볼 또는 데이타 심볼들사이에는 개개의 보호 간격이 제공되는, 디지탈 코딩된 데이타의 다중 반송파 변조(OFDM변조)를 위한 방법에 있어서, 상기 개개의 OFDM전송 프레임의 프레임 헤드의 제어 심볼에 대한 보호 간격을 상기 개개의 OFDM전송 프레임의 유효 데이타 영역의 상기 데이타 심볼에 대한 보호 간격보다 더 커지도록 선택되는 것을 특징으로 하는 디지탈 코딩된 데이타의 다중 반송파 변조 방법.
  2. 제1항에 있어서, 상기 개개의 OFDM전송 프레임의 유효 데이타 영역의 상기 데이타 심볼에 대한 보호 간격의 시간 길이는 가변적인 것을 특징으로 하는 디지탈 방식으로 코딩된 데이타의 다중 반송파 변조 방법.
  3. 제1항 또는 제2항에 따라 변조되는 디지탈 코딩된 데이타의 다중 반송파 복조방법에 있어서, 상기 보호 간격의 시간 길이는 개개의 수신된 OFDM전송 프레임의 유효 데이타 영역에서 데이타 심볼에 대하여 결정되고, 상기 데이타 심볼에 대한 스캐닝 모멘트는 상기 검출된 보호 간격의 길이의 함수로서 결정되는 것을 특징으로 하는 디지탈 코딩된 데이타의 다중 반송파 복조 방법.
    ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970700313A 1994-07-20 1995-07-20 공동파 네트 워크에서 다중 반송파 전송 Expired - Lifetime KR100335035B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEP4425713.9 1994-07-20
DE4425713A DE4425713C1 (de) 1994-07-20 1994-07-20 Verfahren zur Vielträger Modulation und Demodulation von digital codierten Daten
PCT/EP1995/002868 WO1996002989A1 (de) 1994-07-20 1995-07-20 Mehrträgerübertragung in gleichwellennetzen

Publications (2)

Publication Number Publication Date
KR970705264A true KR970705264A (ko) 1997-09-06
KR100335035B1 KR100335035B1 (ko) 2002-11-22

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KR1019970700313A Expired - Lifetime KR100335035B1 (ko) 1994-07-20 1995-07-20 공동파 네트 워크에서 다중 반송파 전송

Country Status (15)

Country Link
US (1) US6115354A (ko)
EP (1) EP0771497B1 (ko)
JP (1) JP2901018B2 (ko)
KR (1) KR100335035B1 (ko)
AT (1) ATE170685T1 (ko)
AU (1) AU681806B2 (ko)
CA (1) CA2194394C (ko)
CZ (1) CZ286082B6 (ko)
DE (2) DE4425713C1 (ko)
DK (1) DK0771497T3 (ko)
ES (1) ES2121410T3 (ko)
FI (1) FI114263B (ko)
HU (1) HU215892B (ko)
PL (1) PL177232B1 (ko)
WO (1) WO1996002989A1 (ko)

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EP0771497B1 (de) 1998-09-02
JP2901018B2 (ja) 1999-06-02
DE4425713C1 (de) 1995-04-20
JPH09512156A (ja) 1997-12-02
DE59503453D1 (de) 1998-10-08
CZ369796A3 (en) 1997-04-16
WO1996002989A1 (de) 1996-02-01
CZ286082B6 (cs) 2000-01-12
FI970204L (fi) 1997-01-17
HUT77417A (hu) 1998-04-28
HU215892B (hu) 1999-03-29
US6115354A (en) 2000-09-05
DK0771497T3 (da) 1999-06-07
AU681806B2 (en) 1997-09-04
PL318348A1 (en) 1997-06-09
FI114263B (fi) 2004-09-15
HU9603628D0 (en) 1997-02-28
ATE170685T1 (de) 1998-09-15
PL177232B1 (pl) 1999-10-29
EP0771497A1 (de) 1997-05-07
ES2121410T3 (es) 1998-11-16
FI970204A0 (fi) 1997-01-17
AU3162795A (en) 1996-02-16
KR100335035B1 (ko) 2002-11-22
CA2194394A1 (en) 1996-02-01
CA2194394C (en) 2001-12-25

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