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| OFDM低压电力线通信信道估计研究 | |
| 引用本文： | 杨海宝,徐磊,尹继春,宏哲.OFDM低压电力线通信信道估计研究[J].电力系统通信,2006,27(6):69-73. |
| 作者姓名： | 杨海宝 徐磊 尹继春 宏哲 |
| 作者单位： | 1. 张家口通信学院,河北,张家口,075000 2. 保定市电力局,河北,保定,071000 3. 河北能源工程设计有限公司,河北,石家庄,050031 4. 华北电力大学,河北,保定,071003 |
| 摘 要： | 正交频分复用(OFDM)技术以其多种优势成为低压电力线宽带通信的最佳选择,而信道估计是正交频分复用系统的关键问题之一。文章首先讨论了低压电力线的几种通信信道模型,对现有的OFDM通信信道估计算法进行了分析,最终选择了能够反映低压电力线统计变化规律的低压电力线统计自回归模型和LMS自适应信道估计算法,并进行了初步仿真研究。仿真结果表明,LMS信道估计方法能够很好地跟踪低压电力线信道的变化,具有良好的估计性能。 |
| 关 键 词： | OFDM 低压电力线 自适应 统计自回归模型 |
| 文章编号： | 1005-7641(2006)06-0069-05 |
| 收稿时间： | 2005-12-28 |
| 修稿时间： | 2006-01-16 |
Study about channel estimation for OFDM system in low-voltag power line communication |
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| YANG Hai-bao,XU Lei,YINI Ji-chun,HONG Zhe.Study about channel estimation for OFDM system in low-voltag power line communication[J].Telecommunications for Electric Power System,2006,27(6):69-73. | |
| Authors: | YANG Hai-bao XU Lei YINI Ji-chun HONG Zhe |
| Affiliation: | 1. Zhangjiakou Communication College, Zhangjiakou 075000, China ; 2. Baoding Elctric Power Bureau, Baoding 071000, China; 3. Hebei Resource Engineering Design Co. , Ltd. , Shijiazhuang 050031, China; 4. North China Electric Power University ,Baoding 071003 ,China |
| Abstract: | Orthogonal Frequency Division Multiplexing technique is the best choice for low-voltage power line broadband communication because of its many advantages.Channel estimation is one of the key problems in OFDM system.Establishing a reasonable channel model is the first step in channel estimation research.In this paper,several communication channel models of low-voltage power line are discussed firstly.Then OFDM communication channel estimation algorithms,which are used now,are analyzed.At last,the statistic AR model of low-voltage power line which is able to reflect the statistical time-varying rule and LMS adaptive channel estimation algorithm are chosen.The simulation is made for OFDM low-power line communication system.The simulation results indicate that LMS algorithm is able to tracking the varying of low-power line and has good estimation performances. |
| Keywords: | Orthogonal Frequency Division Multiplexing(OFDM) low-voltage power line adaptive statistic AR model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |