基于有限码长极性码的 RIS 辅助编码合作系统性能分析

IF 3.2 2区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Yan Pan;Shunwai Zhang
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引用次数: 0

摘要

在这封信中,我们提出了一种基于极地编码的新型可重构智能表面(RIS)辅助编码合作系统,以实现超可靠的全球覆盖传输。首先,我们建立了基于极地编码的 RIS 辅助编码合作系统。源极码和中继极码采用普洛特金构造方法共同设计,并在目的地进行联合译码。随后,我们利用中心极限定理(CLT)和伽马近似(GA)推导出了 Nakagamii-$m$ 衰减信道模型下的遍历容量(EC)理论表达式。特别是,通过近似其严格的上下限,得到了有限码长情况下 Ergodic 容量的闭式表达式。最后,理论分析和仿真结果证明了所提系统与现有方案相比的优越性,并揭示了随着极码码长的增加,有限码长所提系统的EC接近理想EC。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance Analysis of RIS-Assisted Coded Cooperation System Based on Polar Codes With Finite Code Length
In this letter, we propose a novel reconfigurable intelligent surface (RIS)-assisted coded cooperation system based on polar codes to pursue the ultra-reliable and global coverage transmission. Firstly, we establish the RIS-assisted coded cooperation system based on polar codes. The polar codes employed at the source and relay are jointly designed by Plotkin construction method, and the joint decoding is performed at the destination. Subsequently, we derive the theoretical expressions for ergodic capacity (EC) under Nakagami- $m$ fading channel model with central limit theorem (CLT) and Gamma approximation (GA). Specially, the closed-form expression for EC with finite code length is obtained by approximating its tight upper and lower bounds. Finally, theoretical analysis and simulation results demonstrate the superiorities of the proposed system compared to the existing schemes, and also reveal that the EC of the proposed system with finite code length approaches the ideal EC as the code length of polar codes increases.
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来源期刊
IEEE Signal Processing Letters
IEEE Signal Processing Letters 工程技术-工程:电子与电气
CiteScore
7.40
自引率
12.80%
发文量
339
审稿时长
2.8 months
期刊介绍: The IEEE Signal Processing Letters is a monthly, archival publication designed to provide rapid dissemination of original, cutting-edge ideas and timely, significant contributions in signal, image, speech, language and audio processing. Papers published in the Letters can be presented within one year of their appearance in signal processing conferences such as ICASSP, GlobalSIP and ICIP, and also in several workshop organized by the Signal Processing Society.
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