辅助判决式最大似然式相干光接收机的冷启动(英文)

Cold-Start of Optical Coherent Receiver with Decision-aided Maximum Likelihood Carrier Phase Estimation

在辅助判决式最大似然式相干接收机启动策略基础上,提出了另一种冷启动方案:利用M次幂算法获得启动序列,再过渡至辅助判决最大似然性相位估计.仿真结果验证了该方案的可行性.进一步优化表明:当M次幂算法与辅助判决最大似然性算法参数均取最优值时,冷启动方案性能达到最佳.与传统启动方案相比,这种冷启动方案能够应用于多接收机系统中,且更加适用于未来突发模式相干光传输系统中.

Based on the strart of the Decision-Aided Maximum-Likelihood(DAML)receriver,a scheme for cold-start of the DAML receiver are proposed.In this scheme,M-th power algorithm is used to get the initial sequence to start up the DAML receiver.Simulation results confirm the feasibility of this scheme.Further optimization shows that when both the parameters of M-th power algorithm and DAML algorithm take the optimal values,the cold-start scheme achieves the best performance.Compared with the legacy start-up scheme,this scheme can be applied to multi-receiver systems and is more suitable for burst mode communications.