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基于小波变换的OFDM在电力线通信系统中的应用 被引量:6

Performance Comparison of FFT-OFDM and DWT-based OFDM in PLC
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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。 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.
作者 王震 王颖 陈浩哲 卞诗航 丁俊杰 吴昊 游善红 WANG Zhen WANG Ying CHEN Hao-zhe BIAN Shi-hang DING Jun-jie WU Hao YOU Shan-hong(School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China)
出处 《光通信研究》 北大核心 2017年第2期5-8,共4页 Study on Optical Communications
基金 区域光纤通信网与区域新型光通信系统国家重点实验室(北京大学)开放课题 光纤通信技术和网络国家重点实验室开放课题(2013OCTN-02 2015OCTN-02)
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 OFDM discrete wavelet transform carrier frequency offset power line communication
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