All-optical two-way relaying dual-hop FSO systems using network coding over atmospheric turbulence channel

M. Vu, H. Pham, Thu A. Pham, N. Dang
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引用次数: 6

Abstract

All-optical two-way relaying is an advanced techniques that helps to improve the data-rate and throughput of free-space optical (FSO) communication systems. In this paper, we propose to implement all-optical two-way relaying in dual-hop FSO systems using network coding. The relay node that is based on optical regenerate-and-forward relaying is equipped with an all-optical XOR gate and optical hard-limiters. Performance of the proposed system is analyzed under the effect of atmospheric turbulence and noise induced by the background light. Based on the closed-form expression for bit-error-rate (BER) derived in this paper, the numerical results demonstrate the feasibility of the proposed systems. In addition, the numerical results provide the useful information for system design such as optimum range of threshold power, required transmitted power, and supportable transmission distance.
在大气湍流信道上使用网络编码的全光双向中继双跳FSO系统
全光双向中继是一种有助于提高自由空间光通信系统数据速率和吞吐量的先进技术。本文提出利用网络编码实现双跳FSO系统的全光双向中继。基于光再生转发中继的中继节点配有全光异或门和光硬限幅器。分析了该系统在大气湍流和背景光噪声影响下的性能。基于本文导出的误码率的封闭表达式,数值结果验证了所提系统的可行性。此外,数值计算结果为系统设计提供了最佳阈值功率范围、所需传输功率和可支持传输距离等有用信息。
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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