KR840007331A - 수 신 기 - Google Patents

수 신 기 Download PDF

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Publication number
KR840007331A
KR840007331A KR1019840000393A KR840000393A KR840007331A KR 840007331 A KR840007331 A KR 840007331A KR 1019840000393 A KR1019840000393 A KR 1019840000393A KR 840000393 A KR840000393 A KR 840000393A KR 840007331 A KR840007331 A KR 840007331A
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KR
South Korea
Prior art keywords
receiver
output
circuit
code
attenuator
Prior art date
Application number
KR1019840000393A
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English (en)
Inventor
랑게웰포트 울리히
Original Assignee
더블유. 제이. 바움
인터내쇼날 스탠다드 일렉트릭 코오포레이숀
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.)
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Publication date
Application filed by 더블유. 제이. 바움, 인터내쇼날 스탠다드 일렉트릭 코오포레이숀 filed Critical 더블유. 제이. 바움
Publication of KR840007331A publication Critical patent/KR840007331A/ko

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Classifications

    • 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
    • H04B1/66—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 for reducing bandwidth of signals; for improving efficiency of transmission
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuits Of Receivers In General (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

내용 없음

Description

수신기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 수신기의 블록도.
제2도는 수신기에 대한 재생회로의 블록도.

Claims (8)

  1. 시분할 다중호출과 분산 스펙트럼 방식을 사용한 디지털 무선 시스템의 고정 및 이동송수신국에 대해 시이퀀스 제어기로서 수반되는 동기 트랙식 상관기와 m 검출기 및 결정단으로 수반되는 m부호 상관기로 포함하여 송신되는 매 n 비트가 n 비트군을 형성하도록 결합되고 n소자 알파벳의 코우드부호로서 엔코우드되는 IF신호로 공급되는 복조기를 구비한 수신기에 있어서, 각각의 검출기는 저역필터(121―1216) 샘플링 스위치(131―1316) 및 주기리세트 적분기(141―1416)으로 수반되는 혼합기(111―1116)를 포함하고,각각의 부호 상관기(71―716)가 그것의 출력이 디멀티플렉서(20)로 수반되는 지연선(101―1016)에 연결되고 디멀티플렉서(20)의 입력중 하나가 동기 트랙식 상관기(6)의 출력에 연결되어 결정단(15)의 출력신호로서 유도되고 그리고 재생회로(21)가 수반되는데 이 재생회로(21)는 그것의 출력이 샘플링 스위치(131―1316)를 제어하는 검출기(22)와 혼합기(111―1116)에 연결되고 그리고 일관성 있는 위상혼합을 위해 적합한 파형을 가진 신호를 혼합기(111―1116)에 인가하는 것을 특징으로 하는 수신기.
  2. 제1항에 있어서, 재생회로(21)의 출력이 제1감쇠기(29)를 통해 지연선(28)의 입력을 앞서는 합성회로(27)에 연결되고 그리고 제2감식기(26)를 통해 재생회로의 입력에 연결된 지연선(28)으로 이루어진 재생회로(21)를 특징으로 하는 수신기.
  3. 제2항에 있어서, 지연선(28)에 의해 제공된 지연이 한부호의 지속시간과 동일한 것을 특징으로 하는 수신기.
  4. 제2항에 있어서, 제2감쇠기(26)는 1보다 적은 감쇠율 α를 제공하고 그리고 제1감쇠기(29)는 β＝1－α의 감쇠율을 제공하는 것을 특징으로 하는 수신기.
  5. 제4항에 있어서, 감쇠율을 조정할 수 있는 것을 특징으로 하는 수신기.
  6. 제5항에 있어서, 제2감쇠기(26)의 감쇠율 α가 동시 프리엠블의 지속시간을 위한 각각의 시간 슬로트의 시작부에서는 1에 세트되고 그리고 트레이닝 시이퀀스로서 사용된 몇 개의 주지 부호 시이퀀스를 뒤따르게 하는 것을 특징으로 하는 수신기.
  7. 제1항에 있어서, 디멀티플렉서(20)의 출력 및 재생회로(21)의 출력은 각각 90위상 시프터(24)를 거쳐 직접 그것의 출력이 지역필터(25)를 통해 극부발진기(4)로서 사용되고 IF신호를 생성하기 위한 혼합기(3)를 공급하는 전압제어 발진기의 제어 입력에 접속된 위상비교기(23)에 접속된 것을 특징으로 하는 수신기.
  8. 제1항 내지 제7항중 어느 하나의 항에 있어서, 코우드 문자의 사용이 2중 직교 m소자 코우드 부호로 이루어지고 다음 사인반전이 디멀티플렉서(20)에서 초래될 수 있는 것을 특징으로 하는 수신기.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019840000393A 1983-01-28 1984-01-28 수 신 기 KR840007331A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833302828 DE3302828A1 (de) 1983-01-28 1983-01-28 Empfangsgeraet
DEP3302828.1 1983-01-28

Publications (1)

Publication Number Publication Date
KR840007331A true KR840007331A (ko) 1984-12-06

Family

ID=6189431

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840000393A KR840007331A (ko) 1983-01-28 1984-01-28 수 신 기

Country Status (8)

Country Link
US (1) US4587662A (ko)
EP (1) EP0115330A3 (ko)
JP (1) JPS59161146A (ko)
KR (1) KR840007331A (ko)
BE (1) BE898783R (ko)
CH (1) CH662457A5 (ko)
DE (1) DE3302828A1 (ko)
ES (1) ES8503903A1 (ko)

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Also Published As

Publication number Publication date
US4587662A (en) 1986-05-06
JPS59161146A (ja) 1984-09-11
EP0115330A2 (de) 1984-08-08
BE898783R (fr) 1984-07-30
CH662457A5 (de) 1987-09-30
DE3302828A1 (de) 1984-08-02
ES529258A0 (es) 1985-03-01
JPH0137055B2 (ko) 1989-08-03
ES8503903A1 (es) 1985-03-01
EP0115330A3 (de) 1987-09-09

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