| 基于循环自相关集平均的DS信号参数盲估计 |
| |
| 引用本文： | 瞿福琪,胡以华.基于循环自相关集平均的DS信号参数盲估计[J].无线电工程,2009,39(3):22-23. |
| |
| 作者姓名： | 瞿福琪 胡以华 |
| |
| 作者单位： | 解放军电子工程学院,安徽省电子制约技术重点试验室,安徽,合肥,230037 |
| |
| 摘 要： | 在循环平稳理论基础上,以DS/BPSK信号为例,分析其循环自相关函数特征,提出一种基于循环自相关集平均的参数盲估计算法。该算法在非零循环频率上搜索特征谱线,从而在较低信噪比下完成对直扩信号载频和PN码速率的估计。通过算法仿真,证明该算法能够有效提高参数估计的信噪比容限。
|
| 关 键 词： | 直扩信号 循环自相关 集平均 参数估计 |
Parameter Blind Estimation of DS Signal Based on Cyclic Autocorrelation and Ensemble Average Method |
| |
| QU Fu-qi,HU Yi-hua.Parameter Blind Estimation of DS Signal Based on Cyclic Autocorrelation and Ensemble Average Method[J].Radio Engineering of China,2009,39(3):22-23. |
| |
| Authors: | QU Fu-qi HU Yi-hua |
| |
| Affiliation: | (Electronic Engineering Institute of PLA,Key Laboratory of Electronic Restricting Technique,Hefei Anhui 230037,China) |
| |
| Abstract: | This paper analyzes the characteristics of cyclic autocorrelation by taking the DS/BPSK signal as an example based on cyclic stationary theory,and provides a new parameter estimation algorithm based on cyclic autocorrelation and ensemble average method.This algorithm makes use of the position and magnitude of non-zero cyclic spectral peaks to estimate the key parameters in low SNR environment.The simulation results prove that this method can improve the SNR tolerance of parameter estimation. |
| |
| Keywords: | DS signals cyclic autocorrelation ensemble average method parameter estimation |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
