KR960701544A - 다중-변조 통신 시스템(multiple-modulation communication system) - Google Patents

다중-변조 통신 시스템(multiple-modulation communication system) Download PDF

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Publication number
KR960701544A
KR960701544A KR1019950703419A KR19950703419A KR960701544A KR 960701544 A KR960701544 A KR 960701544A KR 1019950703419 A KR1019950703419 A KR 1019950703419A KR 19950703419 A KR19950703419 A KR 19950703419A KR 960701544 A KR960701544 A KR 960701544A
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South Korea
Prior art keywords
modulation technique
signal
modulation
communication
modulated
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KR1019950703419A
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KR0183143B1 (ko
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알란 엘. 윌슨
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안쏘니 제이. 살리, 쥬니어.
모토롤라, 인크.
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Publication of KR960701544A publication Critical patent/KR960701544A/ko
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transmitters (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Small-Scale Networks (AREA)
  • Transceivers (AREA)

Abstract

다중-변조 통신 시스템은 제1변조 기술(201,203,205,207)에 의해 변조된 통신 신호 및 제2변조 기술(211,213,215,217)에 의해 변조된 통신 신호를 변조 및 전송하는 송신기(201,203,205,207,209,211,213,215,217,219)포함한다. 제1변조 기술 및 제2변조 기술은 상이하다. 제1변조 기술에 의해 변조된 통신 신호 및 제2변조 기술에 의해 변조된 통신 신호를 수신할 수 있고 이들 통신 신호를 복조할 수 있는 수신기(221,223,225,227,229,231)를 또한 포함한다.

Description

다중-변조 통신 시스템(MULTIPLE-MODULATION COMMUNICATION SYSTEM)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 FM 송신기, AM 송신기, 및 공통 수신기를 도시하는 도면이다

Claims (10)

  1. 통신 시스템에 있어서, 제1변조 기술에 의해 변조된 통신 신호 및 상기 제1변조 기술과는 다른 제2변조 기술에 의해 변조된 통신 신호를 변조 및 전송하는 송신기; 및 상기 제1변조 기술에 의해 변조된 상기 통신 신호 및 상기 제2변조 기술에 의해 변조된 상기 통신 신호를 수신하고, 이들 통신 신호들을 복조시킬 수 있는 수신기를 포함하는 것을 특징으로 하는 통신 시스템.
  2. 제1항에 있어서, 상기 제1변조 기술이 진폭 변조이고 상기 제2변조 기술이 주파수 변조인 것을 특징으로하는 통신 시스템.
  3. 제1항에 있어서, 상기 제1변조 기술이 미분 1/4 위상 편이 변조(differential quaternary phase shift keying)이고 상기 제2변조 기술이 4-레벨 주파수 편이 변조(4-level frequency shift keying)인 것을 특징으로 하는 통신 시스템.
  4. 제1항에 있어서, 상기 제1변조 기술에 의해 변조된 상기 통신 신호는 상기 송신기에 저전력 소비가 요구될 때 전송되는 것을 특징으로 하는 통신 시스템.
  5. 제1항에 있어서, 상기 제2변조 기술에 의해 변조된 상기 통신 신호는 상기 송신기에 더 큰 신호 유효 범위(coverage)가 요구될 때 전송되는 것을 특징으로 하는 시스템.
  6. 통신 유닛에 있어서, 제1변조 기술에 의해 통신 신호를 변조하고, 제1변조된 신호를 생성하는 수단; 상기 제1변조 기술과는 다른 제2변조 기술에 의해 통신 신호를 변조하고, 제2변조된 신호를 생성하는 수단; 상기 제1변조된 신호와 상기 제2변조된 신호 둘 사이에서 선택하고, 선택된 신호를 생성하는 수단; 및 상기 선택된 신호를 전송하는 송신기를 포함하는 것을 특징으로 하는 통신 유닛.
  7. 제6항에 있어서, 상기 제1변조 기술은 진폭 변조하고 상기 제2변조 기술은 주파수 변조인 것을 특징으로 하는 통신 유닛.
  8. 제6항에 있어서, 제1변조 기술은 미분 1/4 위상 편이 변조이고 상기 제2변조 기술은 4-레벨 주파수 편이 변조인 것을 특징으로 하는 통신 유닛.
  9. 제6항에 있어서, 상기 제1변조된 신호는 송신기에 저전력 소비가 요구될 때 선택되는 것을 특징으로 하는 통신 유닛.
  10. 제6항에 있어서, 상기 제2변조된 신호는 송신기에 더 큰 신호 유효 범위가 요구될 때 선택되는 것을 특징으로 하는 통신 유닛.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950703419A 1993-02-17 1994-01-14 다중-변조 통신 시스템 KR0183143B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US1858993A 1993-02-17 1993-02-17
US08/018,589 1993-02-17
US8/018589 1993-02-17
PCT/US1994/000580 WO1994019892A1 (en) 1993-02-17 1994-01-14 Multiple-modulation communication system

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KR960701544A true KR960701544A (ko) 1996-02-24
KR0183143B1 KR0183143B1 (ko) 1999-05-15

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US (1) US5602868A (ko)
KR (1) KR0183143B1 (ko)
CN (1) CN1100860A (ko)
AU (1) AU677300B2 (ko)
BR (1) BR9405728A (ko)
CA (1) CA2154180C (ko)
TW (1) TW325609B (ko)
WO (1) WO1994019892A1 (ko)

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KR0183143B1 (ko) 1999-05-15
US5602868A (en) 1997-02-11
WO1994019892A1 (en) 1994-09-01
AU6229794A (en) 1994-09-14
BR9405728A (pt) 1995-11-28
CA2154180A1 (en) 1994-09-01
AU677300B2 (en) 1997-04-17
CN1100860A (zh) 1995-03-29
CA2154180C (en) 1999-04-06
TW325609B (en) 1998-01-21

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