Enhanced denoising system utilizing incremental parsing

Details Enhanced denoising system utilizing incremental parsing Enhanced denoising system utilizing incremental parsing

2004-11-29

2008-10-07

Ghayour, Mohammad (Department: 2611)

Pulse or digital communications

Receivers

C714S746000, C714S800000

Reexamination Certificate

active

07433427

ABSTRACT:
An apparatus for operating on a received signal that includes a noise-free signal that has been corrupted by a channel is disclosed. A memory stores a channel corruption function specifying the probability that a symbol having a value I was converted to a symbol having a value J by the channel, and a degradation function measuring the signal degradation that occurs if a symbol having the value I is replaced by symbol having a value J. The controller parses one of the received signal or the processed signal into phrases, and replaces one of the symbol having a value I in a context of that symbol in the received signal with a symbol having a value J if the replacement would reduce the estimated overall signal degradation in the processed signal. The context of a symbol depends on the phrase associated with the symbol.

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