| 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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