Fast FH-FSK Modulation Method Using Fast Frequency Hopping PLL Synthesizer

  • YAMAGUCHI Tomofumi
    Dept. of Electrical and Electronic Engineering, Faculty of Engineering, Tokushima University
  • IRITANI Tadamitsu
    Dept. of Electrical and Electronic Engineering, Faculty of Engineering, Tokushima University
  • OIE Takahiro
    Dept. of Electrical and Electronic Engineering, Faculty of Engineering, Tokushima University

Bibliographic Information

Other Title
  • 高速ホッピング周波数シンセサイザを用いた高速FH-FSK変調方式

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Description

In fast FH-SS communication system, it is practically difficult to modulate in order to change the carrier frequency fast. Therefore, in this thesis, a new FSK modulation method with fast frequency hopping PLL synthesizer is proposed. In this method, the interval of next channel difference in the input voltage of VCO multiplied by p/m (p<m, p : odd number, m : multiple power of 2) is added to the input voltage. Because of this way, VCO output frequency is changed. Dividing number of synthesizer is integral number, so it is different that changed VCO output frequency and reference frequency. Therefore, this change of voltage is measured in terms of phase change that reference frequency and VCO output frequency, and it is used to reverse the phase difference, the dividing number apparently appear to be a fraction dividing number. In this paper, the modulation method for a binary data is explained considering two cases. The results of computer simulations are shown which confirm the theoretical predictions.

Journal

  • Technical report of IEICE. SST

    Technical report of IEICE. SST 97 (265), 73-78, 1997-09-25

    The Institute of Electronics, Information and Communication Engineers

Keywords

Details 詳細情報について

  • CRID
    1570572702453605120
  • NII Article ID
    110003289151
  • NII Book ID
    AN10345990
  • ISSN
    09135685
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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