SER analysis of selective DF relaying based OWC system with generalised turbulence

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• 作者：Nikhil Sharma ; Ankur Bansal and Parul Garg
• 刊名：Transactions on Emerging Telecommunications Technologies
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：27
• 期：6
• 页码：790-797
• 全文大小：754K
• ISSN：2161-3915

文摘

In this paper, we analyse the error performance of selective decode-and-forward based optical wireless communication system utilising subcarrier intensity modulation for arbitrary M-ary signalling over generalised ℳ-distributed atmospheric turbulence. The ℳ-distribution is a generic statistical model for characterising the atmospheric turbulence-induced fading and unifies several existing statistical models for atmospheric turbulence. In particular, we derive a closed-form expression of the approximate average symbol error rate for the considered system with independent and non-identically distributed optical links. Furthermore, we analytically evaluate the diversity order for various distributions (e.g. gamma–gamma distribution, K-distribution and negative exponential distribution), characterised by the generalised ℳ-distribution model. The analytical results have been verified by simulations. Copyright