| 一种应用于 LPLC 通信的信噪比估计算法 |
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| 引用本文： | 徐艺文,陈忠辉,魏宏安,张 艳.一种应用于 LPLC 通信的信噪比估计算法[J].福州大学学报(自然科学版),2012,40(6):759-763. |
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| 作者姓名： | 徐艺文 陈忠辉 魏宏安 张 艳 |
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| 作者单位： | 福州大学物理与信息工程学院，福建 福州 350108 |
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| 基金项目： | 国家自然科学基金资助项目(61170147);福建省教育厅科研资助项目(JA12024) |
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| 摘 要： | 首先阐述了基于离散短时傅立叶变换(DSTFT)的多载波FSK通信系统的基本原理,然后提出了一种新的基于时频分析方法和高阶矩理论的信噪比估计算法,并对其进行详细推导,给出了计算公式,最后对该算法的性能进行了仿真.结果表明,其精度能满足低压电力线载波(LPLC)通信的实际需求.
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| 关 键 词： | 信噪比估计 低压电力线 载波通信 算法 |
An SNR estimation algorithm for LPLC communication |
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| XU Yi-wen,CHEN Zhong-hui,WEI Hong-an,ZHANG Yan.An SNR estimation algorithm for LPLC communication[J].Journal of Fuzhou University(Natural Science Edition),2012,40(6):759-763. |
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| Authors: | XU Yi-wen CHEN Zhong-hui WEI Hong-an ZHANG Yan |
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| Institution: | College of Physics and Information Engineering, Fuzhou University, Fuzhou, Fujian 350108, China |
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| Abstract: | Firstly, the principal of the multi-carrier FSK communication system based on discrete short time Fourier transform (DSTFT) is demonstrated. Then a new signal-to-noise (SNR) estimation algorithm based on time-frequency analysis method and high order moment theory is proposed. And the calculation formula of SNR estimation is obtained by detail derivation. Finally, simulation results show that the precision of the algorithm can meet the need of low-voltage power line carrier (LPLC) communication. |
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| Keywords: | signal-to-noise ratio estimation low-voltage power line carrier communication algorithm |
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