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Joint-Polarization ...
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Alfredsson, Arni,1989Chalmers tekniska högskola,Chalmers University of Technology
(author)
Joint-Polarization Phase-Noise Estimation and Symbol Detection for Optical Coherent Receivers
- Article/chapterEnglish2016
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2016
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electronicrdacarrier
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LIBRIS-ID:oai:research.chalmers.se:cd6f80f5-6a11-43dc-9220-f1ac987b8233
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https://doi.org/10.1109/JLT.2016.2593981DOI
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https://research.chalmers.se/publication/246484URI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
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The problem of optimal symbol detection in the presence of laser phase noise is studied, for uncoded polarization-multiplexed fiber-optic transmission. To this end, the maximum a posteriori (MAP) symbol detector is presented. Specifically, it is emphasized that obtaining phase-noise point estimates, and treating them as the true values of the phase noise, is in general suboptimal. Furthermore, a pilot-based algorithm that approximates the MAP symbol detector is developed, using approaches adopted from the wireless literature. The algorithm performs joint-polarization phase-noise estimation and symbol detection, for arbitrary modulation formats. Through Monte Carlo simulations, the algorithm is compared to existing solutions from the optical communications literature. It is demonstrated that joint-polarization processing can significantly improve upon the single-polarization case, with respect to linewidth tolerance. Finally, it is shown that with less than 3% pilot overhead, the algorithm can be used with lasers having up to 6 times larger linewidths than the most well-performing blind algorithms can tolerate.
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Krishnan, Rajet,1982
(author)
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Agrell, Erik,1965Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)agrell
(author)
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Chalmers tekniska högskola
(creator_code:org_t)
Related titles
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In:Journal of Lightwave Technology34:18, s. 4394-44050733-87241558-2213
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