【摘要】 为了更有效地利用电力线进行载波通信,在建立了电力线信道噪声模型及衰减模型的基础上,选取不同支集长度的小波基函数,采用复数全小波包多载波调制方法对电力线信道模型的数据通信进行了仿真,分析了选择不同的小波基函数对仿真结果的影响。仿真结果表明,基于小波的多载波技术要比现行的基于傅里叶变换的多载波技术更加适合载波通信,同时,选取不同支集长度的小波基函数会对通信误码率产生影响。更多还原

【Abstract】 In order to make better use of power line to perform carrier communication,on the basis of noise model and attenuation model of power line channel,the wavelet function with various branch set lengths are selected,and the simulation on data communication using power line channel model,which adopts the multi-carrier modulation method based on complex wavelet packet,is conducted.The effect on simulation result by selecting various wavelet function is also analyzed.The simulation result indicates that multi-carrier modulation technique based on wavelet is more suitable for power line communication than that based on Fourier transformation.Meanwhile,selection of the wavelet function with different branch set lengths can affect the error rate of communication.更多还原