DAML相干光接收机的冷启动

Cold-start of optical coherent receiver with data-aided maximum likelihood carrier phase estimation

DAML(辅助判决式最大似然)相位估计相干光接收机已成为光通信领域未来考虑试验的相干接收方式之一。文章对DAML相干光接收机的启动进行了研究,在此基础上提出了一种冷启动方案。仿真验证了该方案的可行性,同时,对该方案进行了优化。仿真表明,当M次幂算法与DAML算法参数均取最优值时,冷启动方案性能达到最佳。

The optical coherent receiver with Data-Aided Maximum Likelihood （DAML）carrier phase estimation has become one of the coherent reception modes to be considered for tests in the optical communication field in the near future.This paper studies the initiation of this type of receiver and on this basis proposes a cold-start scheme.Simulation verify the feasibility of this scheme.Furthermore it optimizes this scheme and simulation results show that when both the parameters of the Mth pow-er algorithm and the DAML algorithm take the optimal values,the cold-start scheme achieves the best performance.