Performance Analysis of Elastic MIMO-RF/FSO Communication Over Lutz Model with LDPC

2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC) Pub Date : 2019-04-01 DOI:10.1109/WACOWC.2019.8770187

Sanaz Baradaran Rowhani, Alireza Ghaneizadeh, I. Akhlaghi

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引用次数: 2

Abstract

Elastic radio frequency (RF)/ free space optical (FSO) system is a promising solution to access high reliability and quality of performance in satellite-ground communications. It is introduced as a reconfigurable system since RF and FSO links suffer from some unfavorable atmospheric conditions individually. Elastic RF/FSO system has considered RF as a back-up link while FSO stops working due to aforementioned destructive effects. This work has analyzed the performance of two kinds of channel coding schemes named low density parity check (LDPC) and space time block codes (STBC) the former is applied to provide coding gain and the latter to provide spatial diversity over Lutz model considered as a statistical model in RF communication. Finally, the bit error rate (BER) performance of coding schemes has been evaluated over Lutz model with Rayleigh and Rician fading distributions. Simulation results demonstrate a considerable BER reduction even in low signal to noise ratios particularly when FSO meets undesirable atmospheric effects.

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LDPC下Lutz模型弹性MIMO-RF/FSO通信性能分析

弹性射频/自由空间光(FSO)系统是实现卫星地面通信高可靠性和高质量性能的一种有前途的解决方案。由于RF和FSO链路分别受到一些不利的大气条件的影响，因此引入了可重构系统。弹性RF/FSO系统考虑了当FSO由于上述破坏性影响而停止工作时，RF作为备用链路。本文分析了低密度奇偶校验(LDPC)和空时分组码(STBC)两种信道编码方案的性能，前者用于提供编码增益，后者用于提供Lutz模型上的空间分集，这是射频通信中的一种统计模型。最后，在具有瑞利和瑞利衰落分布的鲁茨模型上，对编码方案的误码率性能进行了评价。模拟结果表明，即使在低信噪比的情况下，特别是当FSO遇到不希望的大气影响时，也能显著降低误码率。

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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2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC)

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