一种脉冲噪声环境中的MFSK信号符号速率盲估计算法  

Blind Estimation Algorithm of MFSK Symbol Rate in Impulsive Noise Environment

作　　者：张俊林[1] 王彬[1] 汪洋[1] ZHANG Junlin;WANG Bin;WANG Yang(Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2017年第6期657-661,共5页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(61272041)

摘　　要：为改善脉冲噪声环境中MFSK信号符号速率估计性能,提出一种脉冲噪声环境中MFSK信号符号速率估计算法。该算法首先对接收到的信号进行非线性映射;然后对非线性映射后的信号进行小波分析,推导出其二次小波变换的表达式,并给出小波变换尺度与频率间隔的对应关系;最后给出MFSK信号符号速率估计步骤。仿真结果表明,在脉冲噪声环境中,该方法具有良好的估计性能。To solve the problem of poor performance for MFSK symbol rate blind estimation in im- pulsive noise environment, a novel symbol rate estimation method of the MFSK signals is proposed. Firstly, the received signal is mapped by nonlinear transformation. Then, on the basis of studying the wavelet analysis aspect of nonlinear transformation MFSK, the analytical expressions for the wavelet transform function are derived, and the relationship of the wavelet scale to frequency devia- tion is certified. Finally, we summarize the processes of the symbol rate estimation algorithm for MF- SK. Simulation results show that the proposed method has higher estimation performance in impul- sive noise environment.

关 键 词：脉冲噪声 符号速率 MFSK 小波变换 

分 类 号：TN911[电子电信—通信与信息系统]