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Novel FIR-filter configuration tolerant to fast phase fluctuations in digital coherent receivers for higher-order QAM signals

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3 Author(s)
Mori, Y. ; Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan ; Chao Zhang ; Kikuchi, K.

We propose a novel configuration of FIR filters adapted by the decision-directed LMS algorithm in the digital coherent receiver. Simulations and experiments show its high tolerance to phase noise and frequency offset for 16-QAM signals.

Published in:

Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2012 and the National Fiber Optic Engineers Conference

Date of Conference:

4-8 March 2012