Noise-driven recovery of a digital pulse stream

Details Noise-driven recovery of a digital pulse stream Noise-driven recovery of a digital pulse stream

2011-06-14

2011-06-14

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Testing

Signal noise

C375S340000, C375S254000, C341S056000

Reexamination Certificate

active

07961779

ABSTRACT:
Provided is a method and system for noise-driven recovery of a digital pulse stream. The method includes receiving initial parameters including the base characteristics of a pulse signal, the characteristics including the minimum pulse interval. An incoming analog signal is converted to a digital signal and sampled a predetermined number of times at intervals less than the minimum pulse interval to record a set of minimum signal values. The incoming signal is also sampled a predetermined number of times at intervals less than the minimum pulse interval to record a set of maximum signal values. At least the first greatest value from the set of maximum signal values is discarded. Each set is averaged to provide an average minimum value and an average maximum value. Based on these values at least one threshold value is then determined, and the digital pulse stream is identified based on the threshold values. The method is repetitive, continually re-determining the threshold values so as to adapt to changes in the incoming signal. A system for performing the method is also provided.

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