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首页> 外文期刊>IEEE Transactions on Communications >Frequency-Shift Filtering for OFDM Signal Recovery in Narrowband Power Line Communications
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Frequency-Shift Filtering for OFDM Signal Recovery in Narrowband Power Line Communications

机译：窄带电力线通信中用于OFDM信号恢复的频移滤波

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摘要

Power line communications (PLC) has been drawing considerable interest in recent years due to the growing interest in smart grid implementation. Specifically, network control and grid applications are allocated the frequency band of 0-500 kHz, commonly referred to as the narrowband PLC channel. This frequency band is characterized by strong periodic noise which results in low signal to noise ratio (SNR). In this work we propose a receiver which uses frequency shift filtering to exploit the cyclostationary properties of both the narrowband power line noise, as well as the information signal, digitally modulated using orthogonal frequency division multiplexing. An adaptive implementation for the proposed receiver is presented as well. The proposed receiver is compared to existing receivers via analysis and simulation. The results show that the receiver proposed in this work obtains a substantial performance gain over previously proposed receivers, without requiring any coordination with the transmitter.
机译：近年来，由于对智能电网实施的兴趣日益增加，电力线通信（PLC）引起了人们的极大兴趣。具体来说，为网络控制和网格应用程序分配了0-500 kHz的频带，通常称为窄带PLC通道。该频段的特点是强烈的周期性噪声，导致信噪比（SNR）低。在这项工作中，我们提出了一种接收机，该接收机使用频移滤波来利用窄带电力线噪声以及信息信号的循环平稳特性，并使用正交频分复用对信号进行数字调制。还提出了针对所提出的接收机的自适应实现。通过分析和仿真，将建议的接收器与现有接收器进行比较。结果表明，这项工作中提出的接收器比以前提出的接收器获得了可观的性能提升，而无需与发送器进行任何协调。

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