<I>M</I>-ary modulation scheme based on separation of deterministic chaotic dynamics for noncoherent chaos-based communications

DOI Web Site 参考文献19件 オープンアクセス
  • Arai Shintaro
    Dept. of Communication Network Engineering, Kagawa National College of Technology
  • Nishio Yoshifumi
    Dept. of Electrical and Electronic Engineering, Tokushima University
  • Yamazato Takaya
    Institute of Liberal Arts and Science, Nagoya University

説明

The present paper proposes a novel M-ary modulation scheme based on separation and reconstruction of deterministic chaotic dynamics for noncoherent chaos-based communications. The M-ary modulation scheme can transmit b-bit data at a time by using M=2b distinct sequences. In order to generate M distinct sequences and recover b-bit data, the proposed system separates the chaotic dynamics having the chaotic sequence by using M interleavers, and reconstructs the original sequence based on the chaotic dynamics from the separated one by using M deinterleavers. In advance, each data symbol among M symbols is allocated to each interleaver-deinterleaver pair. The transmitter selects an interleaver corresponding to a data symbol and separates the order of samples of the chaotic sequence using the selected interleaver. The receiver feeds the received sequence into all M deinterleavers and outputs M reconstructed sequences. The proposed system can reconstruct the original chaotic sequence only when the correct deinterleaver, which becomes paired with the interleaver, is selected. Therefore, the receiver can recover b-bit data by analyzing the chaotic dynamics of each reconstructed sequence. We carry out computer simulations and evaluate performances of the proposed M-ary modulation scheme.

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