Performance Comparison of FFT-OFDM and DWT-based OFDM in PLC

WANG Zhen; WANG Ying; CHEN Hao-zhe; BIAN Shi-hang; DING Jun-jie; WU Hao; YOU Shan-hong

doi:10.13756/j.gtxyj.2017.02.002

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Performance Comparison of FFT-OFDM and DWT-based OFDM in PLC

- Performance Comparison of FFT-OFDM and DWT-based OFDM in PLC
- Study on Optical communication Issue 2, Pages: 5-8(2017)
- 作者机构：
  
  苏州大学电子信息学院
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2017.02.002
  CLC： TM73;TN913.6
- Published：2017，
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[1]王震,王颖,陈浩哲,卞诗航,丁俊杰,吴昊,游善红.基于小波变换的OFDM在电力线通信系统中的应用[J].光通信研究,2017(02):5-8.

WANG Zhen, WANG Ying, CHEN Hao-zhe, et al. Performance Comparison of FFT-OFDM and DWT-based OFDM in PLC. [J]. Study on Optical communication (2):5-8(2017)
[1]王震,王颖,陈浩哲,卞诗航,丁俊杰,吴昊,游善红.基于小波变换的OFDM在电力线通信系统中的应用[J].光通信研究,2017(02):5-8. DOI： 10.13756/j.gtxyj.2017.02.002.

WANG Zhen, WANG Ying, CHEN Hao-zhe, et al. Performance Comparison of FFT-OFDM and DWT-based OFDM in PLC. [J]. Study on Optical communication (2):5-8(2017) DOI： 10.13756/j.gtxyj.2017.02.002.

摘要

研究了基于DWT（小波变换）的OFDM（正交频分复用）和FFT（快速傅里叶变换）的OFDM两种不同调制方式在PLC（电力线通信）系统中的性能。首先建立了两种不同调制方式下PLC的系统模型

然后在AWGN（加性高斯白噪声）和子CFO（载波频率偏移）的干扰下

分析了两种系统的误码性能以及峰均功率比的分布。通过仿真发现

在PLC系统中

DWT-OFDM系统比FFT-OFDM系统更具优势

在未来的PLC系统中必将发挥重要的作用。

Abstract

We mainly compared the performance of Fast Fourier Transform（FFT）Orthogonal Frequency Division Multiplexing（OFDM）and Discrete Wavelet Transform（DWT）OFDM in Power Line Communication（PLC）.We first shown the PLC channel model.Then the Bit Error Rate（BER）and Peak-to-Average Power Ratio（PAPR）performances of DWT-OFDM and FFT-OFDM are analyzed with the interference of Additive White Gaussian Noise（AWGN）and Carrier Frequency Offset（CFO）.Throughout the simulation

DWT-OFDM is more appropriate to power line communications in the PLC system

which will make significant influence on the PLC in the future.

关键词

正交频分复用离散小波变换载波频率偏移电力线通信

Keywords

OFDMdiscrete wavelet transformcarrier frequency offsetpower line communication

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