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arXiv · 1801.01433

Robust Faster-than-Nyquist PDM-mQAM Systems with Tomlinson-Harashima Precoding

Deyuan Chang·Oluyemi Omomukuyo·Xiang Lin·Shu Zhang·Octavia A. Dobre·Ramachandran Venkatesan
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Abstract

A training-based channel estimation algorithm is proposed for the faster-than-Nyquist PDM-mQAM (m = 4, 16, 64) systems with Tomlinson-Harashima precoding (THP). This is robust to the convergence failure phenomenon suffered by the existing algorithm, yet remaining format-transparent. Simulation results show that the proposed algorithm requires a reduced optical signal-to-noise ratio (OSNR) to achieve a certain bit error rate (BER) in the presence of first-order polarization mode dispersion and phase noise introduced by the laser linewidth.

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Deyuan Chang, Oluyemi Omomukuyo, Xiang Lin, Shu Zhang, Octavia A. Dobre, Ramachandran Venkatesan. 2018-01-04. Robust Faster-than-Nyquist PDM-mQAM Systems with Tomlinson-Harashima Precoding. https://doi.org/10.1109/lpt.2016.2573740

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