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Error performance of preamplified optical PPM systems with finite extinction ratios

机译:具有有限消光比的预放大光学PPM系统的误差性能

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摘要

In this paper, we present an analytical study of the error performance in optically preamplified, M-ary pulse position modulation, in free-space optical communication systems with finite extinction ratios. We derive a theoretical expression for the probability of bit error and compute it numerically for different symbol sizes and extinction ratios. We also provide the power penalty due to a finite extinction ratio for both coded and uncoded systems. The study shows that, in certain cases and for a given extinction ratio, lower symbol sizes may yield an error performance similar to that achieved by higher symbol sizes.
机译:在本文中,我们对具有有限消光比的自由空间光通信系统中光学预放大的M元脉冲位置调制中的误差性能进行了分析研究。我们导出了误码概率的理论表达式,并针对不同的符号大小和消光比对它进行了数值计算。由于编码和未编码系统的消光比都有限,因此我们还提供了功率损失。研究表明,在某些情况下,对于给定的消光比,较低的符号大小可能会产生与较高的符号大小类似的错误性能。

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