Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2007-01-23
2007-01-23
Burd, Kevin (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S319000
Reexamination Certificate
active
10342198
ABSTRACT:
Systems and methods for estimating and correcting a DC offset in a receiver in the presence of a carrier frequency offset. Samples corresponding to a transmitted signal are received. Each sample is corrected for a carrier frequency offset. An average value is computed for a training sequence of the corrected samples, where the training sequence has a known DC offset. The average value is adjusted using an adjustment factor that reflects an effect on the DC offset of the act of correcting for a carrier frequency offset, thereby generating a DC offset estimate.
REFERENCES:
patent: 6725024 (2004-04-01), Lindoff et al.
patent: 6868128 (2005-03-01), Lane
patent: 6904098 (2005-06-01), Isaksen et al.
Chang Lawrence K.
Koomullil George P.
Burd Kevin
RF Micro Devices, Inc.
Withrow & Terranova, P.L.L.C.
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