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| 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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