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Improved Lower Bounds on Mutual Information Accounting for Nonlinear Signal--Noise Interaction

Naga VishnuKanth Irukulapati,Marco Secondini,Erik Agrell,Pontus Johannisson,Henk Wymeersch

Journal of Lightwave Technology（2018）

Cited 4|Views0
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Abstract
In fiber-optic communications, evaluation of mutual information (MI) is still an open issue due to the unavailability of an exact and mathematically tractable channel model. Traditionally, lower bounds on MI are computed by approximating the (original) channel with an auxiliary forward channel. In this paper, lower bounds are computed using an auxiliary backward channel, which has not been previou...
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Key words
Information rates,Channel models,Backpropagation,Approximation algorithms,Computational modeling,Detectors,Mutual information
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