Whitening matched filter for use in a communications receiver

Details Whitening matched filter for use in a communications receiver Whitening matched filter for use in a communications receiver

2005-03-01

2005-03-01

Corrielus, Jean B. (Department: 2637)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S229000, C375S350000

Reexamination Certificate

active

06862326

ABSTRACT:
A novel and useful whitening matched filter (WMF) for use in a communications receiver. The WMF is constructed by cascading a matched filter and a noise-whitening filter. The response of the matched filter is derived from the time reversed complex conjugate of the channel impulse response. The whitening filter is derived by extracting the minimum phase portion of the mixed phase channel impulse response using homomorphic deconvolution. The whitening filter is implemented using either an FIR or IIR filter adapted to process the data received before and after the training sequence using a minimum phase system in a direction in time opposite to that of the direction of corresponding data sample processing performed by the equalizer.

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