KR950022501A - 다중캐리어 주파수 호핑 통신 시스템 - Google Patents

다중캐리어 주파수 호핑 통신 시스템 Download PDF

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KR950022501A
KR950022501A KR1019940035844A KR19940035844A KR950022501A KR 950022501 A KR950022501 A KR 950022501A KR 1019940035844 A KR1019940035844 A KR 1019940035844A KR 19940035844 A KR19940035844 A KR 19940035844A KR 950022501 A KR950022501 A KR 950022501A
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communication system
frequency hopping
data
spread spectrum
transmitting
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KR1019940035844A
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KR100379047B1 (ko
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브라잘 아메리꼬
슐리 앙뜨와느
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프레데릭 얀 스미트
필립스 일렉트로닉스 엔. 브이.
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/02—Details not particular to receiver or transmitter
    • H04L13/06—Tape or page guiding or feeding devices
    • 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
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2649—Demodulators
    • H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
    • 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
    • H04L5/023—Multiplexing of multicarrier modulation signals
    • H04L5/026—Multiplexing of multicarrier modulation signals using code division

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

다중캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템은 직교 주파수 스프레딩을 통하여 부호화를 실행함으로써 기저대역 데이타를 전송하는 수단을 포함하는 적어도 하나의 전송국과 역 전단 수단을 포함하는 적어도 하나의 수신국을 구비한다. 채널 전송된 데이타는 디지탈 변조의 결과인 심볼을 포함할 수 있다. 이 심볼은 실레로 OFDM신호를 불리는 신호 포맷을 갖는 프레임인 신호 프레임에 결합함으로서 전송단에서 공급될 수 있다. 통신 시스템은 하나의 송수신 기지국(B)과 다수의 송수신 사용자국(U1,U2)로 형성될 수 있다.
참조도 : 제2도
응용 : 전화 통신 또는 다른 통신용 시스템

Description

다중캐리어 주파수 호핑 통신 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1A 및 1B도는 사용자국에 동작하는 송수신 처리회로의 회로도.
제2도는 본 발명에 따른 통신 시스템 부분의 일반적인 회로도.
제4도는 본 발명에 따른 주파수 호핑 분사 스펙트럼에 대한 일실시예의 회로도.

Claims (11)

  1. 최소한 하나의 전송 채널로 서로 통신하는 최소한 하나의 전송국과 최소한 하나의 수신국을 구비하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템에서, 상기 시스템의 전송국은 주파수 호핑 스프레드 스펙트럼 부호화에 의해 데이타를 전달하는 베이스밴드 전달 수단을 구비하고, 수신국은 추정 데이타(estimated data)를 복원하는 역 전달 수단을 구비하는 상기 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템에 있어서, 전달 수단은 직교 주파수 분할에 따라 부호화를 실생하고, 역 전달 수단은 부호화 실행의 역 변환을 수행하는 동안 복호화를 실행하는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  2. 제1항에 있어서, 전달 수단은 역 푸리에 변환을 실행하는 수단을 구비하며, 역 전달 수단은 직접 푸리에 변환을 실행하는 수단을 구비하는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  3. 제2항에 있어서, 주파수 호핑을 부호화하거나 복호화하기 위하여, 전달 수단 및 역 전달 수단 각각은 데이타 믹싱수단 및 데이타 디믹싱 수단을 각각을 구비하며, 상기 전달 수단 및 상기 역 전달 수단 모두는, -가변 번지 시퀀스를 발생하는 번지 발생기와- 믹싱할 또는 역믹싱할 데이타가 기록되어, 판독시 믹싱된 데이타 또는 역믹싱된 데이터를 각각 전달하는 메모리로서, 믹싱 및/또는 역믹싱은 가변 시퀀스 번지 발생기의 도움에 의해 기록모드와 판독모드에서 메모리를 다르게 번지지정함으로써 실행되어지는 상기 메모리를 구비하는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  4. 제1항 내지 제3항중 어느 한항에 있어서, 데이타는 디지탈 변조에 의해 변조된 신호로부터 발생하며, 상기 시스템은 전송국에 있어서는 전송 메시지를 디지탈 변조 심볼로 변환하는 수단을 구비하고, 수신국에 있어서는 수신된 심볼에서 메시지를 추출하는 수단를 구비하는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  5. 제4항에 있어서, 주파수 점프를 부호화하기 위하여, 전달 수단은 심볼을 표본화하는 수단(821-82M)과 가변표본화된 신호(SU1-SUM)를 패킷화 하는 수단(831-83M)를 구비하며, 하나의 패킷은 심볼이 발생되는 곳으로부터의 디지틀 변조의 심볼수와 같거나 보다 많은 표본화된 심볼의 수를 포함하게 되는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  6. 제2항 내지 제5항중 어느 한항에 있어서, 역 푸리에 변환을 실행하는 수단은 신호 프레임을 형성하는 수단에 앞서 있으며, 직접 푸리에 변환을 실행하는 수단은 신호 프레임으로부터 신호를 추출하는 수단에 뒤따르는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  7. 제6항에 있어서, 프레임을 형성하는 수단(15), -보호 심볼을 가산하는 수단과,- 시리얼라이저 수단, 및 심볼 블럭의 프레임을 형성하고, 특정 심볼의 블럭을 가산하는 수단을 구비하는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  8. 제1항 내지 제7항중 어느 한항에 있어서, 적어도 하나의 송수신 기지국(B)과 기지국을 통하여 전송 채널(CHA1,CHA2)에 의해 서로간에 통신하는 다수의 송수신 사용자국(U1,U2)을 구비하는 것을 특징으로 하는 다중 캐리어 주파수 호핑 스프레드 스펙트럼 통신 시스템.
  9. 제7항에 청구된 바와 같은 시스템에 사용되는 사용자국.
  10. 제7항에 청구된 바와 같은 시스템에 사용되는 기지국.
  11. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940035844A 1993-12-22 1994-12-22 다중캐리어주파수호핑확산스펙트럼통신시스템,사용자국,및기지국 KR100379047B1 (ko)

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US (1) US5548582A (ko)
EP (1) EP0660559B1 (ko)
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DE (1) DE69434353T2 (ko)
SG (1) SG48266A1 (ko)

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