Enhanced denoising system

Details Enhanced denoising system Enhanced denoising system

2011-03-22

2011-03-22

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C714S746000, C714S774000, C714S778000, C714S752000, C714S800000, C375S316000, C375S240200, C375S350000

Reexamination Certificate

active

07912159

ABSTRACT:
A method and apparatus for processing a received digital signal that has been corrupted by a channel is disclosed. The method includes storing the received digital signal and receiving a partially corrected sequence of symbols that includes an output of a preliminary denoising system operating on the received digital signal. Information specifying a signal degradation function that measures the signal degradation that occurs if a symbol having the value I is replaced by a symbol having the value J is utilized to generate a processed digital signal by replacing each symbol having a value I in a context of that symbol in the received digital signal with a symbol having a value J if replacement reduces a measure of overall signal degradation in the processed digital signal relative to the received digital signal as measured by the degradation function and the partially corrected sequence of symbols.

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Tsachy Weissman et al,“Universal Discrete Denoising”,2002,“ITW2002”, pp. 11-14.

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