Title :
Novel FIR-filter configuration tolerant to fast phase fluctuations in digital coherent receivers for higher-order QAM signals
Author :
Mori, Yojiro ; Zhang, Chao ; Kikuchi, Kazuro
Author_Institution :
Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan
Abstract :
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.
Keywords :
FIR filters; optical fibre communication; optical modulation; optical receivers; quadrature amplitude modulation; 16-QAM signals; FIR-filter configuration; decision-directed LMS algorithm; digital coherent receivers; fast phase fluctuations; higher-order QAM signals; phase noise; Delay; Finite impulse response filter; Fluctuations; Least squares approximation; Optical fiber filters; Phase noise;
Conference_Titel :
Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2012 and the National Fiber Optic Engineers Conference
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-1-4673-0262-3
