A simple multifunctional digital channelized structure

In this paper, an approach is presented to realizing a simple, multifunctional digital channelized structure which is easily implemented in hardware according to the concept of modularity of software radios. The proposed architecture based on the uniform digital channelized structure of band-pass filter bank provides four kinds of channel structures which are formed by different combinations of the decimation factor M and the arrangement of filter group. In the proposed implementation of the filter group, the number of filters K is related to M by K=M or K =2M, and simultaneously the arrangement of filter group can be selected to be even or odd. Through flexible module configuration, this architecture is simply achieved in FPGA hardware.