Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2009-05-15
2011-10-25
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S285000
Reexamination Certificate
active
08045634
ABSTRACT:
Methods and apparatus for use in reducing residual phase error (RPE) in orthogonal frequency division multiplexed (OFDM) communication signals are described. In at least one embodiment of the invention, an apparatus includes a residual phase error estimator configured to estimate a residual phase error at least partially based on a plurality of phases of a first channel-compensated received signal and a plurality of phases of a sliced version of the first channel-compensated received signal. The residual phase error estimator is configured to correct a channel estimate at least partially based on the residual phase error estimate to thereby generate a corrected channel estimate. The apparatus includes a channel compensator configured to generate a second channel-compensated received signal at least partially based on a received signal and the corrected channel estimate.
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AT&T Mobility II LLC
Huang David
Liu Shuwang
Zagorin O'Brien Graham LLP
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