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| OFDM低压电力线通信中基于小波去噪的盲信道估计 | |
| 引用本文： | 陈燕华,焦毅. OFDM低压电力线通信中基于小波去噪的盲信道估计[J]. 电力系统通信, 2006, 27(12): 58-62 |
| 作者姓名： | 陈燕华 焦毅 |
| 作者单位： | 1. 重庆电力高等专科学校,电力系电子通信教研室,重庆,400053 2. 西安通信学院四系,野战通信装备教研室,陕西,西安,710106 |
| 摘 要： | 分析了OFDM低压电力线通信中采用盲信道估计的可行性,基于二阶矩盲信道估计算法提出一种小波去噪盲估计,这种算法利用小波变换思想,对盲算法中接收信号自相关矩阵的估计值进行消噪处理,以减小噪声干扰对信道估计的影响。通过仿真试验分析了小波去噪盲估计的性能。仿真结果表明,该方法与盲算法相比信道估计性能得到了明显的提高。 |
| 关 键 词： | OFDM 低压电力线通信 盲估计 小波去噪 |
| 文章编号： | 1005-7641(2006)12-0058-05 |
| 收稿时间： | 2006-07-05 |
| 修稿时间： | 2006-08-07 |
Blind channel estimation based on wavelet denoising for OFDM system in low-voltage power line communication |
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| CHEN Yan-hua,JIAO Yi. Blind channel estimation based on wavelet denoising for OFDM system in low-voltage power line communication[J]. Telecommunications for Electric Power System, 2006, 27(12): 58-62 | |
| Authors: | CHEN Yan-hua JIAO Yi |
| Abstract: | In this paper,the author analyzes the feasibility of blind channel estimation used in OFDM technology in low-voltage power line.A wavelet denoising blind channel estimation is proposed based on a blind channel estimation in which second order moment is used.This algorithm utilizes wavelet transformation to eliminate the noise contained in the autocorrelation matrix of received signal estimated by blind algorithm,by which the noise interference effect on channel estimation can be decreased.The paper also analyzes the performance of the algorithm proposed by stimulation trial. |
| Keywords: | OFDM low-voltage power line communication blind estimation wavelet denoising |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |