Generalized Multilevel Code-Shifted Differential Chaos Shift Keying Modulation System

IF 5.2 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems I: Regular Papers Pub Date : 2025-03-28 DOI:10.1109/TCSI.2025.3571716

Shou-Yi Li;Hua Yang;Guo-Ping Jiang

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Abstract

To achieve a high data rate while maintaining a low peak to average power ratio (PAPR), a novel generalized multi-level code-shifted differential chaos shift keying modulation system is proposed. In this system, both the reference and multiple data-bearing signals transmit data bits through code index modulations performed on the same set of Walsh codes, leading to enhanced utilization of indices and increased data rate. In addition, each data-bearing signal transmits one extra bit using differential chaos shift keying modulation. To mitigate high PAPR, discrete cosine spreading codes are employed to distinguish between the reference and data-carrying signals. Two receiver configurations are designed to balance low complexity and improved bit error rate performance. Bit error rate performances are analyzed and simulated under the additive white Gaussian noise and multipath Rayleigh fading channels. Finally, comparisons are made between the proposed and other CS-DCSK-based systems, which illustrates that our system can offer an increased data rate and superior bit error rate performance, along with a reduced PAPR.

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广义多电平码移微分混沌移键控调制系统

为了在保持低峰值平均功率比（PAPR）的同时实现高数据速率，提出了一种新型的广义多级码移微分混沌移键控调制系统。在该系统中，参考信号和多个承载数据的信号通过对同一组Walsh码进行码索引调制来传输数据位，从而提高了索引的利用率，提高了数据速率。此外，每个承载数据的信号使用差分混沌移位键控调制方式多传输一个比特。为了降低高PAPR，采用离散余弦扩频码来区分参考信号和承载数据的信号。设计了两种接收器配置，以平衡低复杂度和提高误码率性能。分析和仿真了加性高斯白噪声和多径瑞利衰落信道下的误码率性能。最后，与其他基于cs - dcsk的系统进行了比较，表明我们的系统可以提供更高的数据速率和更好的误码率性能，同时降低了PAPR。

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来源期刊

IEEE Transactions on Circuits and Systems I: Regular Papers 工程技术-工程：电子与电气

CiteScore

9.80

自引率

11.80%

发文量

441

审稿时长

2 months

期刊介绍： TCAS I publishes regular papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: - Circuits: Analog, Digital and Mixed Signal Circuits and Systems - Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic - Circuits and Systems, Power Electronics and Systems - Software for Analog-and-Logic Circuits and Systems - Control aspects of Circuits and Systems.