Design and performance analysis of high-data-rate multi-carrier three-dimensional index modulation quadrature chaos shift keying system

被引：0

作者：

He, Lifang ^{[1
]}

Hu, Yanan ^{[1
]}

Chen, Xibiao ^{[1
]}

机构：

[1] Chongqing Univ Posts & Telecommun, Sch Commun & Informat Engn, Chongqing 400065, Peoples R China

来源：

DIGITAL SIGNAL PROCESSING | 2025年 / 167卷

关键词：

Quadrature Chaos Shift Keying (QCSK); Time-code-energy index modulation; AWGN; Multipath Rayleigh fading channels; COMMUNICATION; DCSK; CHANNEL; SCHEME;

D O I：

10.1016/j.dsp.2025.105429

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper proposes a novel multi-carrier quadrature chaos shift keying communication scheme that utilizes joint time slot, code, and energy index modulation (JTCE-IM-QCSK) to achieve high-speed data transmission. By selecting chaotic signals based on the activation status of time slots and expanding them using Discrete Cosine Transform (DCT) code generated by code index, the data transmission rate is significantly increased. Additionally, the paper improves the bit error rate (BER) performance by employing an energy allocation strategy to boost signal energy, along with a noise suppression module. The paper provides theoretical expressions for the system's BER under additive white Gaussian noise (AWGN) and multipath Rayleigh fading channels, and compares its data rate, spectral efficiency, and complexity performance with other chaotic communication systems. Finally, the performance advantages of the proposed scheme are verified through Monte Carlo simulation results.

引用

页数：12

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