STTC-CPM系统中基于Laurent分解的简化检测算法

A Simple Detection Algorithm Based on Laurent Decomposition for STTC-CPM System

基于空时网格编码的CPM(Space-Time Trellis Coding CPM,STTC-CPM)技术在提高系统性能的同时增加了接收机的复杂度,而使用Laurent算法的CPM技术能够简化接收机的结构。将这两种技术相结合,给出了STTC-CPM系统中基于Laurent分解的一种简化检测算法。分析和仿真表明,该算法与最优的最大似然序列检测相比,性能非常接近且能有效地简化运算复杂度。

The system performance can be improved by STTC-CPM（Space-Time Trellis Coding CPM,STTC-CPM）technology,but it can results in high receiver complexity.The Laurent decomposition of CPM could be used to solve this problem.This paper proposes a simple detection algorithm by combining space-time code with Laurent decomposition technology for the STTC-CPM system.Analysis and simulation results show that the algorithm reduces efficiently the computation complexity with a very small degradation in error performance compared with the optimum maximum likelihood sequence detection.