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Partial band reconstruction of frequency channelized filters

  • US 20040042557A1
  • Filed: 11/25/2002
  • Published: 03/04/2004
  • Est. Priority Date: 08/29/2002
  • Status: Active Grant
First Claim
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1. A digital channelizer for a wideband signal of K channels, comprising:

  • an analysis filter coupled to each of said K channels;

    a Fast Fourier Transform (FFT) filter bank coupled to said analysis filter for converting each of K channels into a plurality of frequency domain subchannels;

    an inverse FFT filter bank coupled to L channels from said FFT filter bank, wherein L is less than K, and wherein said inverse FFT filter bank converts said L users to a time domain data set; and

    a synthesis filter coupled to said inverse FFT filter bank performing partial reconstruction of said time domain data set.

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