Multicarrier dual-index permuted chaos shift keying system for efficiency improvement in chaotic communications
We propose a multicarrier chaotic system that incorporates dual-index and M-ary modulation techniques. The proposed system improves the energy andspectrum efficiencies with a tradeoff in computational complexity. In addition,it applies index modulation to select the chaotic signal and permuted chaot...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Electronics and Telecommunications Research Institute (ETRI)
2025-08-01
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| Series: | ETRI Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.4218/etrij.2024-0124 |
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| Summary: | We propose a multicarrier chaotic system that incorporates dual-index and M-ary modulation techniques. The proposed system improves the energy andspectrum efficiencies with a tradeoff in computational complexity. In addition,it applies index modulation to select the chaotic signal and permuted chaoticsignals along with M-ary modulated symbols. As a result, the spectral andenergy efficiencies are increased in chaotic systems. Theoretical expressionsare derived to calculate the bit error rate of the proposed system under additivewhite Gaussian noise and Rayleigh fading channels. The equations are vali-dated through Monte Carlo simulations, whose results demonstrate a reduc-tion in bit error rate for the proposed system. The data rate, spectral efficiency,energy efficiency, and computational complexity of the proposed system areanalyzed and compared with those of existing multicarrier chaotic systems. |
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| ISSN: | 1225-6463 2233-7326 |