摘要
提出一种基于软判决BICM-ID系统中的DD(Decision-Directed)迭代载波相位同步算法。该算法基于最大似然估计(ML)算法,利用BICM-ID译码产生的判决信息,通过迭代地在同步和解码之间交换信息来完成联合解码和载波相位同步。仿真结果验证了算法的有效性,较传统的相位同步算法具有更优的性能,随着信噪比的增大,更快地逼近理想同步性能。
An iterative ML-based DD（Decision-Directed） carder phase recovery algorithm in BICM-ID based on soft-decision was proposed, which made use of the decision information provided by the decoder and got good estimate of carrier phase by iteratively exchanging information between the synchronizer and the decoder. Simulation results show the algorithm is effective and has better performance, compared with the classical method. With the increasing SNR, it approaches the performance of ideal synchronization faster.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2007年第20期4769-4772,共4页
Journal of System Simulation
