Performance of free space optical communication systems over exponentiated Weibull atmospheric turbulence channel for PPM and its derivatives

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• 作者：Md. Mobasher Ahmed ; Kazi Tanvir Ahmmed ; ^{tanvir@cu.ac.bd" class="auth_mail" title="E-mail the corresponding author} ; Alamgir Hossan ; Md. Rabiul Hossain
• 关键词：Free space optical communication ; Exponentiated Weibull ; OOK ; PPM ; Symbol error rate
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：127
• 期：20
• 页码：9647-9657
• 全文大小：1024 K

文摘

In this paper, we have characterized the performance of an intensity modulation/direct detection (IM/DD), free space optical (FSO) communication system in terms of average symbol error rate (SER) over exponentiated Weibull (EW) atmospheric turbulence channel. The system of interest uses on-off keying (OOK) and various pulse position modulation (PPM) schemes. Expressions to assess the SER performance of the modulation techniques under EW atmospheric turbulence channel are derived. Aperture averaging effect on SER performance is also presented. Numerical results are displayed for mentioned modulation techniques and compared graphically under weak, moderate and strong turbulence regime. The simulation results exhibit that for the same peak power, differential amplitude pulse position modulation (DAPPM) provides superior performance than the other modulation schemes considered in this paper.