摘要
针对中压配电线信道特性,提出了一种基于分数阶Fourier变换(FRFT)的通信方法。以线性调频信号(chirp)作为调制信号,利用线性调频信号在分数阶傅里叶变换域的能量聚焦特性,提高系统的抗噪声干扰和频率选择性衰减的能力。建立了系统的仿真模型,仿真结果证明了方法的可行性。
The characteristic of channel in middle-voltage power line is presented, a method based on fractional Fourier transform for communication is proposed. The chirp signal is used for modulation, and the energy of chirp signal is collected effectively when the Fourier order is suitable, thus, the capability of the system’s anti-noisy disturbance is improved and frequency selective attenuation is also solved. The simulation results verify the feasibility of the program.
出处
《通信技术》
2008年第5期10-12,共3页
Communications Technology
关键词
配电线载波通信
分数阶FOURIER变换
线性调频信号
频率选择性衰落
middle-voltage distribution line carrier communication
fractional Fourier transform
chirp signal
frequency selective attenuation
