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Performance Improvement of Chaos-Coded Modulation Method with Non-Binary Error Correction Codes
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DOI：10.23919/transcom.2025EBP3005.png)
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Abstract
En 中文
With the recent increase in mobile devices and Internet of We focus on physical-layer security and propose chaos-coded modulation (CCM), which encrypts modulation in the physical layer. CCM is a type eavesdroppers by convolving multiple bits and the shared key during modulation, while enabling legitimate receivers to obtain coding gain. However, owing to the encryption in the CCM, in principle, no correlation exists between the Hamming distance of the bit sequence and the Euclidean distance of the modulated symbol sequence. Therefore, the bit labeling of CCM is imperfect when compared to the Gray labeling of linear modulation, and the log-likelihood ratio obtained at the receiver is degraded. Consequently, the CCM has significantly limited performance improvement when conthe modulation rate increases. To solve this problem, we propose a CCM ulation problem and improving error-rate performance. Numerical results
Keywords:
physical layer security
chaos coded modulation
physical layer security
non-binary error correction code
Reed-Solomon code
LDPC code
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