Demodulators – Phase modulation demodulator
Reexamination Certificate
2005-02-22
2005-02-22
Pascal, Robert (Department: 2817)
Demodulators
Phase modulation demodulator
C375S340000
Reexamination Certificate
active
06859094
ABSTRACT:
Disclosed is a phase-demodulation method for minimizing the phase error of a communication signal. The phase-demodulation method for demodulating a phase-demodulated communication signal using a digital phase-demodulation algorithm includes the steps of: adding one sampling to the digital phase-demodulation algorithm represented by an equationFk(x)=∑k=0k-1Ckxk,where k is the number of sampling times and Ckis a complex constant; and, demodulating the phase-demodulated communication signal. Accordingly, the phase-demodulation method minimizes the phase error generated when a noise is propagated in phase space during a demodulation time of the phase-modulated communication signal, using a minimum number of sampling times and a minimum number of calculation times.
REFERENCES:
patent: 4112358 (1978-09-01), Ashida
patent: 4112497 (1978-09-01), Fletcher et al.
patent: 4412302 (1983-10-01), Nossen
patent: 6618450 (2003-09-01), Hatta
Cha & Reiter L.L.C.
Chang Joseph
Pascal Robert
Samsung Electronics Co,. Ltd.
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