Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2011-01-11
2011-01-11
Payne, David C (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S322000, C375S324000, C375S329000, C375S341000, C375S350000, C375S354000
Reexamination Certificate
active
07869534
ABSTRACT:
An approach is provided for clock-pulse synchronization between an amplitude-modulated or phase-modulated received signal and a transmitted signal by estimating the timing offset between the received signal and the transmitted signal by maximum-likelihood estimation, wherein the maximum-likelihood estimation is realized through a pre-filtering dependent upon the transmission characteristic, a subsequent nonlinear signal-processing function and an averaging filtering. The received signal is an offset quadrature-phase-modulated received signal, and the nonlinear signal-processing function maintains the alternating components in the spectrum of the pre-filtered offset quadrature-phase-modulated received signal.
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Ditthavong Mori & Steiner, P.C.
Flores Leon
Payne David C
Rohde & Schwarz GmbH & Co. KG
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