Digital comb limiter combiner

Details Digital comb limiter combiner Digital comb limiter combiner

2011-08-23

2011-08-23

Vo, Nguyen (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S307000, C455S308000

Reexamination Certificate

active

08005452

ABSTRACT:
A wideband receiver comprises a comb limiter combiner wherein the limiting is conducted by digitization and frequency excision in the frequency domain. The received signal is divided up into sub-bands by a bank of bandpass filters having contiguous pass bands spanning the entire receiver range. In each sub-band the band limited signal is digitized and subjected to digital signal processing. A threshold is set such that any frequency with a magnitude that exceeds the threshold is excised in the frequency domain. When converted back to the time domain, the high-power interference frequencies will no longer be present, thereby leaving only the low-power noise and the desired signal.

REFERENCES:
patent: 6549560 (2003-04-01), Maiuzzo et al.

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