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Multilevel Modulated Chaotic Encryption and Belief Propagation Decoding

  • THEORY AND METHODS OF SIGNAL PROCESSING
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Abstract

Due to the increasing channel capacity of multiple input multiple output (MIMO) systems, we herein propose a multilevel modulated chaotic encryption method to allow belief propagation (BP) decoding in massive MIMO systems. The proposed scheme was reconstructed based on a previous scheme: binary modulated chaotic encryption for allowing BP decoding. In the encryption method of the proposed scheme, constellation points in general multilevel modulation were encrypted by rotating them by an arbitrary angle using chaos rules. Numerical results showed that the proposed scheme has high performance with regard to the bit error ratio and security. Thus, the proposed scheme could be practical and may also increase the channel capacity of massive MIMO systems using chaotic encryption.

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Funding

The work was supported by the Telecommunications Advancement Foundation, Japan.

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Authors and Affiliations

  1. National Institute of Fitness and Sports in Kanoya, Information Technology Center for Sports Science, 891-2311, Kagoshima, Japan

    K. Sakoda

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  1. K. Sakoda
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Correspondence to K. Sakoda.

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Sakoda, K. Multilevel Modulated Chaotic Encryption and Belief Propagation Decoding. J. Commun. Technol. Electron. 68, 454–459 (2023). https://doi.org/10.1134/S1064226923040137

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  • DOI: https://doi.org/10.1134/S1064226923040137

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