Title :
A modified CMA for blind equalization and phase recovery in optical coherent receivers
Author :
Zhu, Hai ; Chen, Xue ; Zhou, Weiqin ; Li, Zhiyu ; Zhou, Xian ; Zhang, Zhiguo
Author_Institution :
Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, P.O. Box 128, #10 XiTuCheng Road, HaiDian District, 100876, China
Abstract :
In order to solve the phase rotating problem for constant modulus algorithm (CMA) in polarization division multiplexing system with optical coherent receivers, a modified constant modulus algorithm based on decomposing cost function into real and imaginary parts is proposed in this paper. Simulation results show that, the proposed algorithm can compensate any angle phase distortion arising from channel, and deal with phase offset caused by intradyne receiver, with better performance comparing the conventional CMA.
Keywords :
Blind equalizers; Cost function; Optical distortion; Optical filters; Optical modulation; Optical polarization; Optical receivers; Optical signal processing; Phase distortion; Signal processing algorithms; CMA; Digital Equalization; Optical Coherent Receiver; Polarization Multiplexing;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
