时变衰落信道下同态滤波技术的研究

Research on homomorphism filtering technique on time varying fading channels

针对短波信道多径传播的特点，采用卷积型同态滤波技术和复时谱分析方法，抗多径传播引起的信号衰落．研究结果表明，该技术能减小输出信号均方误差，改善传输信号质量，是一种有效的抗多径方法．

According to the characteristics of multipath propagation in short wave channels, we apply the convolutional homomorphism filtering technique and the complex time domain analysis method of spectrum in order to resist signal fading resulting from multipath propagation. The research shows that these techniques are effectice which can resist signal fading resulting from multipath propagation, and are helpful for decreasing the root mean square error of the output and improving the transmission quality of the signals.