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Joint Statistics and MLSD in Filtered Incoherent High-Speed Fiber-Optic Communications

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6 Author(s)
Alic, N. ; Dept. of Electr. & Comput. Eng., Univ. of California San Diego, La Jolla, CA, USA ; Karlsson, M. ; Sköld, M. ; Milenkovic, O.
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In this paper, signal statistics and their utilization for detection in narrowly filtered equalized high-speed fiber-optic communications are investigated experimentally. Tradeoffs between log-likelihood metric applications and oversampling are covered in detail. It is, for the first time, demonstrated that performance loss in bandwidth-limited systems can be nearly fully recovered (to within 0.5 dB) by taking advantage of bandwidth-limitation-induced noise correlations and oversampling.

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Lightwave Technology, Journal of  (Volume:28 ,  Issue: 10 )