摘要
电力线通信是智能电网的关键技术,噪声严重影响了电力线通信质量。为此,提出一种基于改进自适应滤波的电力线通信噪声抑制方法。该方法针对变步长最小均方误差(LMS)算法收敛速度和稳态精度之间的矛盾问题,采用误差相关值作为步长调整因子,并加入补偿项,提高了算法的收敛速度和抗干扰能力。对电力线通信背景噪声和脉冲噪声抑制进行了仿真实验,验证了所提算法的有效性。
The power line communication is the key technology of smart grid.But the noise seriously affects the quality of power line communication.Therefore,a noise suppression method based on improved adaptive filter for power line communication is proposed.The method of suppress the noise based on contradiction between convergence speed and steady-state accuracy of variable step size least mean square error(LMS)algorithm is proposed.In this method,the error correlation value is used as the step adjustment factor,and the compensation term is added to improve the convergence speed and anti-interference ability of the algorithm.Simulation experiments are carried out to suppress the background noise and impulse noise of power line communication to verify the effectiveness of the proposed algorithm.
作者
龙敏
魏梅芳
LONG Min;WEI Mei-fang(Technical Skills Central Training Department of State Grid Hunan Electric Power Corporation,Changsha 410000,China)
出处
《信息技术》
2021年第5期90-95,共6页
Information Technology
关键词
电力线通信
噪声抑制
自适应滤波
变步长
power line communication
noise suppression
adaptive filtering
variable step size
