{"title":"Toward Non-Coherent Chaotic Communications: An RIS-Aided Dual M-ary DCSK System","authors":"Xiangming Cai;Weikai Xu;Lin Wang;Chau Yuen","doi":"10.1109/LCOMM.2024.3524637","DOIUrl":null,"url":null,"abstract":"In this letter, we propose a reconfigurable intelligent surface (RIS)-aided dual M-ary differential chaos shift keying (RIS-DM-DCSK) system for non-coherent chaotic communications. In RIS-DM-DCSK, a dual M-ary DCSK signal is designed to transmit twice the number of modulated bits compared to a standard M-ary DCSK signal while permutation index modulation is employed to convey additional index bits, thereby enhancing energy efficiency. Furthermore, we propose a permutation index detection and dual M-ary DCSK demodulation algorithm to recover the transmitted bits. The bit error probability (BEP) of RIS-DM-DCSK is analyzed over a Rayleigh fading channel. Numerical results show that the proposed RIS-DM-DCSK achieves superior bit error rate (BER) performance and energy efficiency compared to benchmark schemes.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"29 3","pages":"472-476"},"PeriodicalIF":3.7000,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10819439/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
In this letter, we propose a reconfigurable intelligent surface (RIS)-aided dual M-ary differential chaos shift keying (RIS-DM-DCSK) system for non-coherent chaotic communications. In RIS-DM-DCSK, a dual M-ary DCSK signal is designed to transmit twice the number of modulated bits compared to a standard M-ary DCSK signal while permutation index modulation is employed to convey additional index bits, thereby enhancing energy efficiency. Furthermore, we propose a permutation index detection and dual M-ary DCSK demodulation algorithm to recover the transmitted bits. The bit error probability (BEP) of RIS-DM-DCSK is analyzed over a Rayleigh fading channel. Numerical results show that the proposed RIS-DM-DCSK achieves superior bit error rate (BER) performance and energy efficiency compared to benchmark schemes.
期刊介绍：
The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.
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