二进制移相键控信号信噪比估计研究  

A Study of SNR Estimation for MPSK Signals

作　　者：胡洪坡 梁书剑 张德兴 

机构地区：[1]总参通信训练基地科研中心,张家口075100

出　　处：《电子信息对抗技术》2010年第5期35-38,共4页Electronic Information Warfare Technology

摘　　要：通过使用最大似然估计算法,对二相移相键控(2PSK)信号在高斯白噪声条件下的信噪比估计进行了研究,推导出信号功率、噪声功率的估计公式,依据该公式构建了2PSK的信噪比估计仿真模型,并在Matlab中进行了仿真计算,仿真结果表明在数据长度达到2000个左右时,信噪比的估计性能较好。By using maximum likelihood estimation algorithm,SNR estimation of 2PSK signal in Gaussian white noise is studied,and the formula of signal,noise power estimation is derived based on the formula,the SNR estimation simulation model of 2PSK is built,and a MATLAB simulation is carried out.Simulation results show that the ratio of the estimated signal to noise has a better performance when the data length is about 2,000.

关 键 词：最大似然估计 信噪比估计 2PSK 

分 类 号：TN971.1[电子电信—信号与信息处理]