带备份射频链路的基于放大和前向的双跳自由空间光通信系统的容量分析

2016 12th International Conference on Innovations in Information Technology (IIT) Pub Date : 2016-11-01 DOI:10.1109/INNOVATIONS.2016.7880020

K. Alhamawi, E. Altubaishi

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引用次数: 2

摘要

本文提出了一种基于放大和转发的双跳自由空间光通信（FSO）系统，并带有射频（RF）备份链路。其中，双跳 FSO 链路采用对数正态分布湍流建模，而射频链路则假定遵循瑞利分布。对于提议的系统，推导出了累积分布函数和端到端信噪比概率密度函数的解析表达式。根据这些表达式，得出了遍历容量的闭式表达式。还介绍了衰减强度对系统容量的影响。与无备份射频链路的双跳 FSO 进行了比较。最后，介绍了计算机仿真结果，以验证我们的数学分析。

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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Capacity analysis of amplify-and-forward based dual-hop free space optical communication system with backup RF link

In this paper, we present an amplify and forward based dual-hop free space optical communication (FSO) system with a radio frequency (RF) backup link. In which, the dual-hop FSO links are modeled by log-normal distribution turbulence, and the RF link is assumed to follow the Rayleigh distribution. For the proposed system, analytical expressions for the cumulative distribution function and the probability density function of the end-to-end signal-to-noise ratio are derived. Based on these expressions, closed-form expression for the ergodic capacity is derived. The effect of the fading strength on the system capacity is presented. A Comparison with a dual-hop FSO without backup RF link is performed. Finally, computer simulation results are presented to verify our mathematical analysis.

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2016 12th International Conference on Innovations in Information Technology (IIT)

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