Generalized FRM-Based P-L Band Multi-Channel Channelizers for Array Signal Processing System

In this paper, we propose a method to design generalized frequency response masking (FRM)-based P-L band multi-channel channelizers for array signal processing system (ASPS), which have sharp transition bandwidth (STB) and low complexity. The order of the prototype filter with STB designed by FRM method is smaller than that of the direct filter design method. The design approach of the proposed generalized FRM-based multi-channel channelizers is presented which solves the problem of high computational complexity of digital channelizer with STB. The proposed generalized FRM-based digital channelizer, which have the characteristics of unification and flexible configuration, is suitable for real signal, complex signal, odd-stacked, even-stacked, maximally decimation and non-maximally decimation structures. The generalized FRM-based P-L band multi-channel channelizers for ASPS is implemented in a Xilinx Kintex UltraScale XCKU115 processor. Experimental results show that the proposed generalized FRM-based digital channelizer offers 84.57% and 76.24% reduction in multipliers complexity and chip power respectively, which is less than conventional polyphase digital channelizer (PDC).