小波变换在符号率估计中的应用  

Application of Wavelet Transformation in Symbol Rate Estimation

作　　者：秦永[1] 周菁菁[1] 

机构地区：[1]江西蓝天学院电子信息工程系

出　　处：《江西蓝天学院学报》2010年第3期40-43,共4页Journal of Jiangxi Blue Sky University

摘　　要：本文基于小波变换提取数字信号瞬变特性功能,研究了利用小波变换结合自相关估计MPSK符号率的方案。给出了小波变换与FFT相结合估计MFSK符号率的方法。仿真结果表明,小波变换估计符号率的方法具有计算量小的优点,且该算法在信噪比大于5dB的情况下可以准确地估计出信号的符号率。Based on the function of wavelet transformation in extracting the transient properties of digital signals,the paper studies the feasibility of a scheme which is used to estimate MPSK symbol rates by combing wavelet transformation with auto-correlation.The paper also presents the method of estimating MFSK symbol rates through combing wavelet transformation with FFT.The simulation results indicate that the method of using wavelet transformation to estimate symbol rates has the advantage of less computational complexity and can be used to effectively estimate the symbol rate of signals even on condition that the signal-noise ratio is over 5 dB.

关 键 词：小波变换 符号率估计 自相关 MPSK MFSK 

分 类 号：TN914.3[电子电信—通信与信息系统]