SwePub - search: id:"swepub:oai:research.chalme...

Enumeration	Reference	Cover	Find
1.	Alfredsson, Arni, 1989, et al. (author) Joint-Polarization Phase-Noise Estimation and Symbol Detection for Optical Coherent Receivers 2016 In: Journal of Lightwave Technology. - 0733-8724 .- 1558-2213. ; 34:18, s. 4394-4405 Journal article (peer-reviewed)abstract 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.

Alfredsson, Arni, 1989, et al. (author)
Joint-Polarization Phase-Noise Estimation and Symbol Detection for Optical Coherent Receivers
2016
In: Journal of Lightwave Technology. - 0733-8724 .- 1558-2213. ; 34:18, s. 4394-4405
Journal article (peer-reviewed)abstract
- 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.

Träfflista för sökning "id:"swepub:oai:research.chalmers.se:cd6f80f5-6a11-43dc-9220-f1ac987b8233" "