一种改进信道化结构的宽带信号重构方法

摘要

数字信道化技术广泛用于宽带信号处理领域，传统的信道化结构由于信道数和抽取(内插)数相等，相邻信道存在混叠问题，对于跨信道信号接收、重构存在很大程度失真。提出一种改进的信道化结构，推导了相应的多相滤波高效算法，最后通过Matlab仿真验证该算法具有很好的改进效果。%Digital channelized technique is widely applied on the wide-band signal processing area. As the number of channels equals to the decimating factor(also inserting factor),classic channelized structure has to face the aliasing issues from the overlapping channels, which em-ploys great distortion for the wide-band signal receiving and reconfiguration. An improved chan-nelized structure is proposed,which also deduces the poly-phase filter banks algorithm. Finally the simulation by Matlab shows the method has an excellent result.