Multi-carrier 2FSK Technology Based on Time-frequency Analysis for LPLC Communication

doi:10.15961/j.jsuese.2013.01.025

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Multi-carrier 2FSK Technology Based on Time-frequency Analysis for LPLC Communication

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- Multi-carrier 2FSK Technology Based on Time-frequency Analysis for LPLC Communication
- Advanced Engineering Sciences Vol. 45, Issue 1, Pages: 158-163(2013)
- 作者机构：
  
  福州大学物理与信息工程学院
- 作者简介：
- 基金信息：
- DOI：10.15961/j.jsuese.2013.01.025
  CLC：
- Published：2013，
  
  Published Online：5 December 2012，
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徐艺文,陈忠辉,王卫星.基于时频分析的多载波2FSK技术在LPLC通信中的应用[J].工程科学与技术,2013,45(1):158-163.

Multi-carrier 2FSK Technology Based on Time-frequency Analysis for LPLC Communication. [J]. Advanced Engineering Sciences 45(1):158-163(2013)
徐艺文,陈忠辉,王卫星.基于时频分析的多载波2FSK技术在LPLC通信中的应用[J].工程科学与技术,2013,45(1):158-163. DOI： 10.15961/j.jsuese.2013.01.025.

Multi-carrier 2FSK Technology Based on Time-frequency Analysis for LPLC Communication. [J]. Advanced Engineering Sciences 45(1):158-163(2013) DOI： 10.15961/j.jsuese.2013.01.025.

摘要

中文摘要: 为解决传统二进制频移键控（2FSK）技术不适应低压电力线（LPLC）信道频率选择性衰落特性的问题，结合离散短时傅立叶变换（DSTFT）和高阶矩理论，提出一种新的可用于时频分析的信噪比估计算法，在此基础上实现了基于时频分析的多载波2FSK信号的数字化解调。仿真结果表明信噪比估计精度可满足LPLC通信的实际需求，且在相同噪声干扰情况下，多载波系统的误码率明显低于单载波系统。

Abstract

Abstract:The traditional binary frequency shift keying (2FSK) technology cannot adapt to the attenuation characteristic of low-voltage power line carrier (LPLC) channel.In order to solve this problem

by using discrete short time Fourier transform and high-order moments theory

a novel signal-to-noise estimation algorithm

which can be used in time-frequency analysis

was proposed. Based on it

a multi-carrier binary frequency shift keying technique based on time-frequency analysis was implemented.Simulation results showed that the precision of the SNR estimation could meet the need of the LPLC communication system in practice and the multi-carrier system gains lower error rate than the single-carrier system while they are interfered by the same noise.

关键词

频移键控离散短时傅立叶变换电力线载波通信信噪比估计高阶矩

Keywords

frequency shift keyingdiscrete short time Fourier transformpower line carrier communicationsignal-to-noise ratio estimationhigh-order moments

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