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Research on Spread-Spectrum Modulation and Demodulation System Using Real-Valued Orthogonal Pseudonoise Sequences

Research Project

Project/Area Number 02650249
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 電子通信系統工学
Research InstitutionKagoshima University

Principal Investigator

TANADA Yoshihiro  Kagoshima Univ., Fac. of Eng., Professor, 工学部, 教授 (70033248)

Co-Investigator(Kenkyū-buntansha) YUNOKUCHI Kazutomo  Kagoshima Univ., Fac. of Eng., Assistant, 工学部, 助手 (10094187)
NAGASAWA Yoji  Kagoshima Univ., Fac. of Eng., Professor, 工学部, 教授 (80005313)
YOSHIDA Hiroshi  Kagoshima Univ., Fac. of Eng., Professor, 工学部, 教授 (20037849)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1990: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsReal-valued orthogonal pseudonoise sequence / Amplitude-modulated code / Pulse-width-modulated code / Spread-spectrum communication / Quasi-synchronous SSMA / Digital correlation processing / Process gain / Desired to undesired signal ratio / DU比 / スペクトル拡散通信 / 振幅変調 / パルス幅変調 / 位相変調 / 相関処理
Research Abstract

This research has been performed from 1990 to 1991, for the purpose of developing spread-spectrum modulation and demodulation system using real-valued orthogonal pseudonoise sequences with the better crosscorrelation properties than those of M-sequences and of urging the practical application of this system to high-quality spread-spectrum communication system. The process from design to experiment has been investigated to be understandable for the engineers in this field.
It is shown that the synchronous or quasi-synchronous spread-spectrum transmission of the amplitude-modulated code and the pulse-width-modulated code enables multichannel interference suppressed to the low level according to theory. The experimental system adopts digital signal processing at a low frequency range, but a high-speed special processor will realize a practical system of high bit rate. The achievements of this project are the followings.
(1)Design of modulation and demodulation system
An amplitude-modulated c … More ode and a pulse-width-modulated code as well as correlation processing are designed so that multichannel interference does not occur in a synchronous or quasi-synchronous spread-spectrum multiple access. Effects of quantization error, additive noise and frequency band on correlator output are made clear through analysis and simulation.
(2)Construction of modulation and demodulation system
In the constructed system, the amplitude-modulated code or the pulse-width-modulated code due to the real-valued pseudonoise sequences of 256 length, passes through a band-pass transmission channel and is demodulated by a front- or back-end digital correlator based on the fast Fourier transform.
(3)Experiment for estimating modulation and demodulation system
When two different codes are multiplexed and demodulated along with additive noise, correlator output waveform, process gain, improvement ratio of desired to undesired signal ratio and bit error rate show the high performance of the values close to theory. Less

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (31 results)

All Other

All Publications (31 results)

  • [Publications] 棚田 嘉博: "有限体上の直交系列" 電子情報通信学会技術研究報告. SSTA90ー28. 75-81 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "実数直交擬似雑音系列を用いた画像の符号化スクランブル伝送" 電子夏報通信学会技術研究報告. SSTA90ー36. 15-22 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "実数直交擬似雑音系列を用いたパルス圧縮多重ソ-ナ" 電子情報通信学会技術研究報告. SSTA90ー37. 23-29 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "実数直交PN系列による画像のスクランブル符号化" 情報理論とその応用学会第13回シンポジウム論文集. 13ーTB2ー4. 131-136 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "一定のシフト範囲で相互相関のない実数直交PN系列とその準同期式SSMAへの応用" 電子情報通信学会論文誌(A). J74ーA. 104-110 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "絶対値が小さい偶数長の実数直交擬似雑音系列" 電子情報通信学会技術研究報告. SSTA91ー10. 61-66 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "パルス圧縮多重ソ-ナに適用した実数谷交PN系列の実験的検証" 電子情報通信学会論文誌(BーII). J74ーBーII. 215-224 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "実数直交PN信号の変復調実験" 電子情報通信学会技術研究報告. SST91ー12. 19-24 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "実数直交PN系列による音声のスクランブル伝送" 情報理論とその応用学会第14回シンポジウム論文集. 14ーSAーBーIIー1. 653-656 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "実数直交PN符号の変復調処理" 情報理論とその応用学会第14回シンポジウム論文集. 14ーSAーBーIIー2. 657-660 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yoshihiro TANADA: "Experimental Verification ofReal-Valued Orthogonal Pn Sequence Applied to Pulse Compression Sonar" Electronics and Communications in Japan,Part1. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "絶対値が小さい偶数周期の実数直交PN系列" 電子情報通信学会論文誌(A). J75ーA. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] TANADA Yoshihiro, YOSHIDA Hiroshi, NAGASAWA Yoji: "Experimental Verification of Real-Valued Orthogonal PN Sequence Applied to Pulse Compression Sonar" Electronics and Communications. Part1. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 棚田 嘉博: "有限体上の直交系列" 電子情報通信学会技術研究報告. SSTA90ー28. 75-81 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交擬似雑音系列を用いた画像の符号化スクランブル伝送" 電子情報通信学会技術研究報告. SSTA90ー36. 15-22 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交擬似雑音系列を用いたパルス圧縮多重ソ-ナ" 電子情報通信学会技術研究報告. SSTA90ー37. 23-29 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交PN系列による画像のスクランブル符号化" 情報理論とその応用学会第13回シンポジウム論文集. 13ーTB2ー4. 131-136 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "一定のシフト範囲で相互相関のない実数直交PN系列とその準同期式SSMAへの応用" 電子情報通信学会論文誌(A). J74ーA. 104-110 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "絶対値が小さい偶数長の実数直交擬似雑音系列" 電子情報通信学会技術研究報告. SSTA91ー10. 61-66 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "パルス圧縮多重ソ-ナに適用した実数直交PN系列の実験的検証" 電子情報通信学会論文誌(BーII). J74ーBーII. 215-224 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交PN信号の変復調実験" 電子情報通信学会技術研究報告. SST91ー12. 19-24 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交PN系列による音声のスクランブル伝送" 情報理論とその応用学会第14回シンポジウム論文集. 14ーSAーBーIIー1. 653-656 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交PN符号の変復調処理" 情報理論とその応用学会第14回シンポジウム論文集. 14ーSAーBーIIー2. 657-660 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yoshihiro TANADA: "Experimental Verification of Real‐Valued Orthogonal PN Sequence Applied to Pulse Compression Sonar" Electronics and Communications in Japan,Part1. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "絶対値が小さい偶数周期の実数直交PN系列" 電子情報通信学会論文誌(A). J75ーA. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 棚田 嘉博: "有限体上の直交系列" 電子情報通信学会技術研究報告. SSTA90ー28. 75-81 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交擬似雑音系列を用いた画像の符号化・スクランブル伝送" 電子情報通信学会技術研究報告. SSTA90ー36. 15-22 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 棚田 嘉博: "実数直交擬似雑音系列を用いたパルス圧縮多重ソ-ナ" 電子情報通信学会技術研究報告. SSTA90ー37. 23-29 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 棚田 嘉博: "一定のシフト範囲で相互相関のない実数直交PN系列とその準同期式SSMAへの応用" 電子情報通信学会論文誌(A). J74ーA. 104-110 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 棚田 嘉博: "絶対値が小さい偶数長の実数直交擬似雑音系列" 電子情報通信学会技術研究報告. SSTA91ー10. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 棚田 嘉博: "パルス圧縮ソ-ナに適用した実数直交PN系列の実験的検証" 電子情報通信学会論文誌(BII). J74ーBーII. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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