Digital block processor for processing a plurality of transmission channels in a wireless radiotelephony system.

摘要

A digital block receiver system, in a cellular/wireless FM radiotelephony system, receives and heterodyne a block of cellular/wireless receive channels (from 201) to a very low block IF signal by analog processing (in 202). This block IF signal is applied to a precision high speed A/D converter (205) and converted to a digitized time series. A window function (in 207) is applied to the digitized time series and a high speed FFT (in 209) is applied to frequency isolate the individual channels. The active channels are digitally processed by a DSP (211) to recover the FM channel modulation. <IMAGE>