| 一种改进的LMS自适应低压电力线通信信道估计方法 |
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| 引用本文： | 谢志远,马英红,郭以贺.一种改进的LMS自适应低压电力线通信信道估计方法[J].华北电力大学学报,2006,33(5):68-71. |
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| 作者姓名： | 谢志远 马英红 郭以贺 |
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| 作者单位： | 华北电力大学,电子与信息工程学院,河北,保定,071003;华北电力大学,电子与信息工程学院,河北,保定,071003;华北电力大学,电子与信息工程学院,河北,保定,071003 |
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| 摘 要： | 在分析了低压电力线信道特性的基础上,对OFDM低压电力线通信中的LMS自适应信道估计算法进行了研究。基于低压电力线的多径传输特性和慢时变特性,提出了一种改进算法,该算法利用低压电力线的多径传输特性实现了对LMS算法更新步长的调整。在OFDM低压电力线通信信道下对该算法进行仿真,结果表明该算法对低压电力线信道具有更好的估计性能。
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| 关 键 词： | 信道估计 LMS OFDM |
| 文章编号： | 1007-2691(2006)05-0068-04 |
| 修稿时间： | 2005年9月21日 |
Improved LMS adaptive channel estimation algorithm for OFDM system in low voltage power line communication |
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| XIE Zhi-yuan,MA Ying-hong,GUO Yi-he.Improved LMS adaptive channel estimation algorithm for OFDM system in low voltage power line communication[J].Journal of North China Electric Power University,2006,33(5):68-71. |
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| Authors: | XIE Zhi-yuan MA Ying-hong GUO Yi-he |
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| Abstract: | The properties of low-voltage power line channel are analyzed.The LMS adaptive channel estimation algorithm for OFDM system in low-voltage power line communication is studied.An improved algorithm is proposed based on the multi-path transmission and slow time-variant properties of low-voltage power line.The renew-step length is modified by using multi-path transmission property of low-voltage power line.It is simulated in OFDM system in low-voltage power line.The results indicate that this algorithm is effective. |
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| Keywords: | channel estimation LMS OFDM |
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