Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2007-07-17
2007-07-17
Phu, Phuong (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S340000, C375S324000, C329S304000
Reexamination Certificate
active
10459604
ABSTRACT:
A method and apparatus for phase-domain semi-coherent demodulator including a receiver for receiving at least a phase component of an input signal. The phase domain semi-coherent demodulator may include a decision unit for forming a decision based on a delayed reference signal and the phase component of the input signal. In addition the phase domain semi-coherent demodulator may include a phase sum adder for subtracting the decision from the phase component of the input signal to form a rotated input phase, a second phase sum adder for subtracting the delayed reference signal from the rotated input phase to form a resulting signal, and a scaler for scaling the resulting signal to form an update signal. A third phase sum adder adds the update signal to the delayed reference signal to form a reference signal.
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Cameron, Esq. Michael
Phu Phuong
Telefonaktiebolaget LM Ericsson (publ)
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