Pulse or digital communications – Receivers – Automatic gain control
Reexamination Certificate
2008-04-08
2008-04-08
Tran, Khanh C. (Department: 2611)
Pulse or digital communications
Receivers
Automatic gain control
Reexamination Certificate
active
07356103
ABSTRACT:
To provide a signal processing circuit which makes it possible to accurately estimate not only amplitude error but also phase error of a signal caused by device characteristics of components of a receiver, correct swiftly the error component without providing feedback control, and eliminate signal deterioration. This signal processing circuit is arranged to have a cross-correlation value calculating unit for calculating a cross-correlation value of a pair of signals having undergone a quadrature detection and a phase error calculating unit for calculating a phase displacement of one of the pair of signals with respect to the other of the same as a phase error based on the cross-correlation value calculated by the cross-correlation value calculating unit.
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Fujitsu Limited
Katten Muchin & Rosenman LLP
Tran Khanh C.
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