Multi-h CPM信号的参数设计研究

Research on Parameters Design of Multi-h CPM Signal

Multi-h CPM是在传统CPM的基础上发展而来的一种调制方式,合理的参数设计可以使得Multi-h CPM具有更好的频带利用率和误码性能。对Multi-h CPM的基本原理和基于维特比算法的最大似然序列检测法进行介绍之后,在Matlab仿真实验环境下,利用控制变量法,分别研究了调制指数、关联长度、输入序列的进制数和相位脉冲函数这四个参数对信号频谱带宽和误码性能的影响规律。这为优化Multi-h CPM信号的参数选取,进而使得通信系统性能在特定的场景下达到最佳提供了参考依据。

Multi-h CPM is a modulation method from the traditional CPM, and reasonable parameter design can make Multi-h CPM better performances on band width efficiency and bit error rate. After introducing the basic principle of Multi-h CPM and the maximum likelihood sequence detection method based on Viterbi algorithm, the control index method is used to study the influences of the four parameters of the modulation index, the correlation length, the number of input sequences, and the phase pulse function on the spectral bandwidth and bit error rate through Matlab software, which provides a reference to the parameters selection of Multi-h CPM signals in specific scenarios.