A modified CMA for blind equalization and phase recovery in optical coherent receivers
Hai Jiang Zhu, Xue Chen, Weiqin Zhou, Zhiyu Li, Xian Chong Zhou, Zhiguo Zhang · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2009
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.