Digital block processor for processing a plurality of transmissi

Details Digital block processor for processing a plurality of transmissi Digital block processor for processing a plurality of transmissi

1991-12-31

1994-11-22

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

364726, 455 331, 455 333, H04B 710, G06F 15332

Patent

active

053675398

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

REFERENCES:
patent: 4501149 (1985-02-01), Konno et al.
patent: 4528656 (1985-07-01), Morais
patent: 4559605 (1985-12-01), Norsworthy
patent: 4601005 (1986-07-01), Kilvington
patent: 4698769 (1987-10-01), McPherson et al.
patent: 4958361 (1990-09-01), Rosen et al.
patent: 5023902 (1991-06-01), Anderson et al.
"TDM/FDM Translation as an Application of Digital Signal Processing " by Stanley L. Freeny IEEE 1980, p. 5.

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