Design of a Dual-Level Polar-Coded Scheme for GCI-DCSK Systems

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-02-20 DOI:10.1109/LCOMM.2025.3543856

Yu Zhou;Liang Lv;Dingfei Ma;Yunye Li;Yi Fang

引用次数: 0

Abstract

In this letter, we present a polar-coded scheme tailored to enhance transmission reliability in generalized carrier index differential chaos shift keying (GCI-DCSK) systems. Considering the reliability difference between the index and modulated layers in GCI-DCSK, we develop a dual-level polar-coded modulation (DLC-PCM) scheme that provides unequal error protection (UEP). Furthermore, to better manage the reliability differences among index bits in the GCI-DCSK system, we propose a dual-level bit-interleaved polar-coded modulation (DLC-BIPCM) scheme by incorporating a bit-interleaved coded modulation (BICM) structure within the index layer. Additionally, we derive log-likelihood ratio (LLR) expressions and calculate the capacities of both the index and modulated layers to strategically guide the design of the DLC-PCM scheme. Simulation results demonstrate that our proposed polar-coded approach achieves superior bit error rate (BER) performance and lower complexity compared to existing low-density parity-check (LDPC)-based schemes.

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GCI-DCSK系统的双电平极编码方案设计

在这封信中，我们提出了一种极编码方案，旨在提高广义载波指数微分混沌移位键控（GCI-DCSK）系统的传输可靠性。考虑到GCI-DCSK中索引层和调制层之间的可靠性差异，我们开发了一种提供不等错误保护（UEP）的双电平极编码调制（DLC-PCM）方案。此外，为了更好地管理GCI-DCSK系统中索引位之间的可靠性差异，我们提出了一种双电平位交错极编码调制（DLC-BIPCM）方案，该方案在索引层中加入了位交错编码调制（BICM）结构。此外，我们推导了对数似然比（LLR）表达式，并计算了索引层和调制层的容量，以策略性地指导DLC-PCM方案的设计。仿真结果表明，与现有的基于低密度奇偶校验（LDPC）的方案相比，我们提出的极编码方法具有更高的误码率（BER）性能和更低的复杂度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

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.