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Atmospheric turbulence can cause significant performance degradation in free space optical communication systems. An efficient solution could be to exploit the temporal diversity to improve the performance of the transmission link. Depending on the tolerable delay latency, the authors can benefit from some degree of time diversity that they can exploit by employing channel coding and interleaving. In this paper, they investigate the efficiency of several channel coding techniques for different time diversity orders and turbulence conditions. They show that a simple convolutional code is a suitable choice in most cases as it makes a good compromise between decoding complexity and performance.
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