| 低压电力线OFDM载波通信系统定时同步新方法 |
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| 引用本文： | 孙丽君,郭禧斌.低压电力线OFDM载波通信系统定时同步新方法[J].科学技术与工程,2014,14(7):192-196. |
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| 作者姓名： | 孙丽君 郭禧斌 |
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| 作者单位： | 河南工业大学电气工程学院,河南工业大学电气工程学院 |
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| 摘 要： | 在低压电力线OFDM载波通信系统中,符号定时偏差和载波频率偏差会产生符号间干扰(ISI)和信道间干扰(ICI),降低OFDM系统性能,所以同步技术至关重要。提出了一种新的定时同步方法,来实现准确的定时同步。分析了传统算法SchmidlCox算法、Minn算法的优缺点,在此基础上,提出基于Minn算法的改进算法。并对比分析了SchmidlCox算法、Minn算法和改进新算法在PLC通信系统的定时同步特性。仿真结果表明采用新算法准确度高,稳定性强,是一种有效的基于OFDM的PLC通信系统定时同步方法。
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| 关 键 词： | 低压电力线载波通信 正交频分复用 定时同步 Minn算法 |
| 收稿时间： | 2013/9/23 0:00:00 |
| 修稿时间： | 2013/10/25 0:00:00 |
a new timing synchronization methods for Low voltage power-line carrier communication system based on OFDM |
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| Sun li-jun and Guo Xi-bin.a new timing synchronization methods for Low voltage power-line carrier communication system based on OFDM[J].Science Technology and Engineering,2014,14(7):192-196. |
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| Authors: | Sun li-jun and Guo Xi-bin |
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| Affiliation: | School of Electrical Engineering,Henan University of Technology |
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| Abstract: | In the low voltage powerline based on OFDM carrier communication system,Symbol timing offset and carrier frequency offset generate intersymbol interference (ISI) and interchannel interference (ICI),which reduce the performance of OFDM system, therefore, it is very important to synchronization technology.This paper puts forward a new method of timing synchronization to achieve accurate timing synchronization.analyzes the advantage and disadvantage of the Schmidl |
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| Keywords: | Low voltage power line carrier communication OFDM Timing synchronization Minn algorithm |
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