Performance Analysis of Mixed Beaulieu-Xie and M $\mathcal {M}$ Dual-Hop Amplify-and-Forward Relay Systems

IF 1.6 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IET Communications Pub Date : 2025-07-03 DOI:10.1049/cmu2.12764

Jiashun Hu, Yuexiang Wu, Weiqiang Wu, Sunan Wang

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Abstract

This work presents a comprehensive study on the performance of an asymmetric dual-hop radio frequency (RF)/free-space optical (FSO) transmission system that utilizes a fixed gain amplify-and-forward protocol. The RF path is characterized by the Beaulieu–Xie model, and the FSO link is affected by Málaga ( $M$ ) turbulence in the presence of pointing errors. In this study, we introduce novel and precise analytical expressions for the probability density function, the cumulative distribution function (CDF), and the moment generating function (MGF) of the overall signal-to-noise ratio (SNR). Using the derived expressions, we proceed to obtain accurate infinite series representations for the outage probability (OP), the average bit-error rate (BER), and the ergodic capacity (EC). In addition, we conduct asymptotic analysis for the CDF, the MGF, the OP, the average BER, and the EC in the high SNR regime. Numerical results are compared with the Monte Carlo simulations to validate the accuracy of these derived expressions.

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混合Beaulieu-Xie和M $\mathcal {M}$双跳放大转发中继系统性能分析

本文对采用固定增益放大转发协议的非对称双跳射频(RF)/自由空间光（FSO）传输系统的性能进行了全面研究。RF路径用Beaulieu-Xie模型表征，在指向误差存在的情况下，FSO链路受到Málaga （M $\mathcal {M}$）湍流的影响。在本研究中，我们引入了总体信噪比（SNR）的概率密度函数、累积分布函数（CDF）和矩生成函数（MGF）的新颖而精确的解析表达式。利用导出的表达式，我们进一步得到了中断概率（OP）、平均误码率（BER）和遍历容量（EC）的精确无穷级数表示。此外，我们还对高信噪比下的CDF、MGF、OP、平均误码率和EC进行了渐近分析。数值结果与蒙特卡罗模拟结果进行了比较，验证了所得表达式的准确性。

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来源期刊

IET Communications 工程技术-工程：电子与电气

CiteScore

4.30

自引率

6.20%

发文量

220

审稿时长

5.9 months

期刊介绍： IET Communications covers the fundamental and generic research for a better understanding of communication technologies to harness the signals for better performing communication systems using various wired and/or wireless media. This Journal is particularly interested in research papers reporting novel solutions to the dominating problems of noise, interference, timing and errors for reduction systems deficiencies such as wasting scarce resources such as spectra, energy and bandwidth. Topics include, but are not limited to: Coding and Communication Theory; Modulation and Signal Design; Wired, Wireless and Optical Communication; Communication System Special Issues. Current Call for Papers: Cognitive and AI-enabled Wireless and Mobile - https://digital-library.theiet.org/files/IET_COM_CFP_CAWM.pdf UAV-Enabled Mobile Edge Computing - https://digital-library.theiet.org/files/IET_COM_CFP_UAV.pdf