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Block adaptive filtering with application to real-time broadband RF spectral whitening

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2 Author(s)
Bredemann, M. ; Sandia Nat. Labs., Albuquerque, NM, USA ; Elliott, G.

The frequency content of signals, which can be adaptively processed in real time, have typically been limited by A/D conversion rates and digital signal processor instruction speeds. By sampling averages rather than instantaneous values of signals formed from the predictor configuration, A/D sample rates and computational requirements can be significantly reduced. This paper describes a circuit which adaptively attenuates 90 MHz bandwidth signals with a 25 kHz sample rate using an analog programmable transversal filter (PTF). The dynamic range of the overall circuit exceeds that of the individual PTF.

Published in:

Signals, Systems and Computers, 1995. 1995 Conference Record of the Twenty-Ninth Asilomar Conference on  (Volume:1 )

Date of Conference:

Oct. 30 1995-Nov. 1 1995