Patent ID: 6393451
Filing Date: 2002-05-21
Classification: H04L

Abstract:
A system for enhancing a modified fast convolution algorithm applied to a channelizer, said system comprising:a &eegr;% overlap block generator for converting a received data stream into blocks; means for performing a NDFT-point Discrete Fourier Transform on said blocks to form bins; means for selecting and extracting bins; a multiplier for multiplying the selected and extracted bins with frequency filter coefficients and outputting multiplied bins; means for frequency shifting the multiplied bins in a frequency domain; means for performing a NIDFT-point Inverse Discrete Fourier Transform on said frequency shifted bins and outputting a result; a &eegr;% overlap block combiner for performing an overlap/save or overlap/add operation on said result; and means for frequency shifting an output of the &eegr;% overlap block combiner in a time domain.