电力信息与通信技术2025，Vol.23Issue(8)：1-8,8.DOI:10.16543/j.2095-641x.electric.power.ict.2025.08.01
一种低压电力线信道OFDM幅频特性采集系统实现方法
Implementation Method of OFDM Amplitude Frequency Characteristics Acquisition System for Low Voltage Power Line Channels
摘要
Abstract
Channel characteristics are the key factors affecting the communication quality of power lines,and the accurate acquisition of power line channel characteristics requires the actual communication signals to be collected on site.In order to realize the on-site acquisition and storage of power line communication signals,this paper proposes an implementation method of OFDM amplitude-frequency characteristic acquisition system for low-voltage power line channels.Based on FPGA,the generation of OFDM signals can be realized,and the clock frequency can be flexibly set to be compatible with different communication bandwidths.The number of available subcarriers and the turning of subcarriers on and off are flexible.The fixed-value OFDM signal is transmitted,and the modulation and demodulation function is not required,which reduces the design difficulty.The analog bandpass filter is used instead of the broadband digital filter,which reduces the use of FPGA logic resources and saves design costs.On the basis of realizing the basic function of isolating the 50 Hz power frequency signal,the coupler adds a protection circuit.A 220 V low-voltage power line test platform was built to verify the feasibility of the method.关键词
电力线通信/正交频分复用/幅频特性/信号采集Key words
power line communication/orthogonal frequency division multiplexing/amplitude-frequency characteristics/signal acquisition分类
信息技术与安全科学引用本文复制引用
胡正伟,王文彬,武凡浩,师嘉梓..一种低压电力线信道OFDM幅频特性采集系统实现方法[J].电力信息与通信技术,2025,23(8):1-8,8.基金项目
国家自然科学基金面上项目(52177083) （52177083）
河北省科技重大专项项目(23281701Z). （23281701Z）
