Digital phase locked loop

Pulse or digital communications – Receivers – Angle modulation

Reexamination Certificate

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Details

C375S327000, C375S355000

Reexamination Certificate

active

07738600

ABSTRACT:
Digital communication signals that encode information in the phase may be susceptible to phase error from many sources. A device corrects for carrier and sampling phase errors, as well as additive phase noise. A digital phase locked loop simultaneously tracks the carrier phase error and the sampling phase error, and corrects the signal in the frequency domain. The device may use the sampling phase error to advance or delay the sampling window used to convert the signal from the time domain to the frequency domain.

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