| 一种非线性直接判决的OFDM电力线通信盲信道估计算法 |
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| 引用本文： | 王鹤,郭玉山. 一种非线性直接判决的OFDM电力线通信盲信道估计算法[J]. 北华大学学报(自然科学版), 2008, 9(6) |
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| 作者姓名： | 王鹤 郭玉山 |
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| 作者单位： | 1. 东北电力大学,电气工程学院,吉林,吉林,132012
2. 中国国电集团公司,康平发电有限公司,辽宁,沈阳,110500 |
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| 基金项目： | 东北电力大学博士基金项目 |
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| 摘 要： | 对OFDM低压电力线信道的特性进行了分析.采用OFDM技术的低压电力线信道具有周期时变的特性,为了跟踪这种特性,提出了一种非线性直接判决的OFDM电力线通信盲信道估计算法.该算法利用接收机接收到的频域信息进行非线性的直接判决,因而无需辅助的导频信息.仿真结果表明,该算法能够很好地跟踪信道的周期时变特性,误码率性能明显优于线性的导频信号辅助信道估计算法.
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| 关 键 词： | 电力线通信 正交频分复用 周期时变特性 信道估计 |
A Blind Channel Estimation Algorithm Based on Cyclic Varying Characteristics in OFDM Power-line Communication |
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| WANG He,GUO Yu-shan. A Blind Channel Estimation Algorithm Based on Cyclic Varying Characteristics in OFDM Power-line Communication[J]. Journal of Beihua University(Natural Science), 2008, 9(6) |
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| Authors: | WANG He GUO Yu-shan |
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| Affiliation: | WANG He1,GUO Yu-shan2 |
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| Abstract: | This paper analyzes the characteristics of low voltage power-line channel with OFDM technology.The low voltage power-line channel with OFDM technology exhibits cyclic varying characteristics.We propose a nonlinear decision-directed blind channel estimation algorithm in OFDM power-line communication.The proposed algorithm utilizes the frequency domain data in the receiver performing a nonlinear decision-directed,therefore,it is no need for supporting pilot information.The simulation results show that the proposed algorithm can follow the cyclic varying characteristics very well and has better BER performance than the linear pilot aided algorithm. |
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| Keywords: | Power-line communication OFDM Cyclic varying characteristics Channel estimation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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