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The growing need for network capacity due to peer-to-peer (P2P) users causes tremendous costs for Internet service providers (ISPs). Traffic shaping schemes have been applied to limit P2P traffic while reducing customer satisfaction and affecting the performance of other applications. As an alternative, in this work we propose the use of inexpensive free-space optical (FSO) links from ISPs to fibre...
In recent work, the error performance of on-off keying has been investigated for free-space optical (FSO) links impaired by both turbulence and pointing loss. In the current letter, the analytical framework is extended to M-ary pulse-position modulation (PPM), providing exact results for M = 2. Since the approach is not directly applicable to PPM signals with M > 2, a closed-form approximation...
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