Patent ID: 6952446
Filing Date: 2005-10-04
Classification: H03H

Abstract:
1. A digital receiving device capable of separating simultaneous signals in a single channel, comprising: digital signal receiving means; means for performing a first fast Fourier transform on a digital signal; means for performing a second fast Fourier transform on an output from said first fast Fourier transform; a digital filter bank receiving output from said second fast Fourier transform; clock cycle delaying means for delaying the digital filter bank output; eliminating the digital filter bank output by comparing to a preselected threshold; and a plurality of narrow-band monobit receivers for receiving signals output from said digital filter bank and of a greater value than said preselected threshold and further, said plurality of narrow-band receivers receiving only the highest two bits from real and imaginary parts of said signal output from said digital filter bank and of a greater value than said signal eliminating threshold.