Technical Program

Paper Detail

Paper:SPCOM-P10.3
Session:Application-Specific Systems and Implementations
Time:Thursday, May 20, 15:30 - 17:30
Presentation: Poster
Topic: Signal Processing for Communications: Application-Specific Systems and Implementation
Title: A MAP EQUALIZER FOR THE OPTICAL COMMUNICATIONS CHANNEL
Authors: Wenze Xi; University of Maryland, Baltimore County 
 Tülay Adali; University of Maryland, Baltimore County 
 John Zweck; University of Maryland, Baltimore County 
Abstract: A maximum a posteriori equalizer is presented for optical communication systems. Assuming that the span of the inter-symbol interference (ISI) does not extend beyond the neighboring bits -- typically the case for the distortion introduced by the polarization mode dispersion (PMD) -- we derive the conditional probability distribution function in the electrical domain in the presence of PMD and amplifier spontaneous emission dominated noise. Simulation results with accurate receiver model and all-order PMD show the success of the MAP equalizer in reducing the ISI due to PMD, and that the analytical conditional pdf we derive provides a good match to the actual distribution.
 
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