| 基于改进Morlet小波的信号符号率估计 |
| |
| 引用本文： | 郭晶,曹洁.基于改进Morlet小波的信号符号率估计[J].电子测量技术,2009,32(11):40-42,75. |
| |
| 作者姓名： | 郭晶 曹洁 |
| |
| 作者单位： | 兰州理工大学计算机与通信学院,兰州,730050 |
| |
| 摘 要： | 连续小波变换由于具有良好的时频分析能力而广泛应用于信号特征分析，同时也由于较大的运算量而影响了其在工程上的运用。针对这个问题，本文根据指数遗忘分布在时间上的相关性，对Morlet小波函数进行了改进，并应用于信号符号率估计。仿真结果表明，采用快速算法的morlet小波变换在信号符号率估计性能方面并没有下降，并且运算效率大大提高了。
|
| 关 键 词： | Morlet小波 符号率估计 快速算法 指数遗忘分布 |
Symbol rate estimation based on the modified Morlet wavelet |
| |
| Guo Jing,Cao Jie.Symbol rate estimation based on the modified Morlet wavelet[J].Electronic Measurement Technology,2009,32(11):40-42,75. |
| |
| Authors: | Guo Jing Cao Jie |
| |
| Affiliation: | Guo Jing Cao Jie(College of Computer and Communication,Lanzhou University of Technology,Lanzhou 730050) |
| |
| Abstract: | Continuous wavelet transform had been widely used in signal recognition for it has excellent capability of time-frequency analysis. But it was limited in engineering application due to heavy cost of operation. In view of the problems,according to the time correlation of exponent forgetting distribution,this paper modified the Morlet wavelet function,and derived a fast algorithm for modified Morlet wavelet transform to reduce the computation. The simulation results show that the modified Morlet wavelet trans... |
| |
| Keywords: | Morlet wavelet symbol rate estimation fast algorithm exponent forgetting distribution |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
