Design of Optimal Multiplierless FRM-Based Wideband Channelizer With STB

In this brief we optimally solve the problem of multiplierless design of wideband channelizers with sharp transition bandwidth (STB). We adopt frequency response masking (FRM) approach to design optimally the prototype filter and propose a low complexity FRM-based architecture for wideband channelizer with STB, which is suitable for wideband channelizers with high sampling rate. The optimal multiplierless design is further used for the FRM filters and discrete fourier transform (DFT) modules. The improved dynamic kernel function DFT with variable truncation is adopted to reduce the number of adders in multiplierless implementation. The hardware implementation of the optimal multiplierless FRM-based architecture for wideband channelizer with STB is presented. The experimental results show that the optimal multiplierless FRM-based architecture offers respectively 80.88% reduction and 20.97% reduction in chip power than polyphase and FRM architectures.