Abstract
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.
© 2010 IEEE
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