Pulse or digital communications – Receivers – Angle modulation
Patent
1994-12-16
1996-07-02
Tse, Young T.
Pulse or digital communications
Receivers
Angle modulation
329306, 329304, 375324, 375344, H03D 322
Patent
active
055330606
ABSTRACT:
A digitized quasi-phase synchronous phase detecting signal of the PSK signal is used to generate digitized quasi-synchronous phase detecting signal phase-corrected by phase correcting data and a first phase display data indicating the phase of the carrier of the PSK signal is generated from the phase-corrected digitized quasi-synchronous phase detecting signal. Alternatively, the digitized quasi-synchronous phase detecting signal of the PSK signal is used to generate second phase display data indicating the phase of the carrier of the PSK signal and third phase-corrected phase display data is generated from the second phase display data. The first or third phase display data is used to generate fourth phase display data indicating the phase assigned to the code of the PSK signal and a decoded digitized code is generated from the fourth phase display data. When signal presence display information is in its state to indicate the amplitude of the PSK signal is larger than a predetermined threshold, the frequency and phase of the carrier of the PSK signal are predicted using their estimated frequency and phase based on the first or second and fourth phase display data. When the signal presence display information transitions to its state to indicate that the amplitude of the PSK signal is smaller than the predetermined threshold, the frequency and phase estimated until then are used to predict the frequency and phase of the carrier of the PSK signal and phase data in the predicted frequency and phase data is generated as the phase correcting data.
REFERENCES:
patent: 4866395 (1989-09-01), Hostetter
patent: 4871973 (1989-10-01), Yoshihara
patent: 4912422 (1990-03-01), Kobayashi et al.
patent: 4949356 (1990-08-01), Long
patent: 4959619 (1990-09-01), Delacroix et al.
patent: 5138272 (1992-08-01), Le Polozec et al.
patent: 5172229 (1992-12-01), Baker
patent: 5179731 (1993-06-01), Trankle et al.
patent: 5265126 (1993-11-01), Yoshikawa
patent: 5398002 (1995-03-01), Bang
Floyd M. Gardner, "Phaselock Techniques", pp. 215-251, A Wiley-Interscience Publication, John Wiley & Sons, Second Edition.
Sadao Takenaka, "Carrier Recovery Circuit & Demodulator", 28 Dec. 1984, abstract.
Yasushi Sugita, "Digital Demodulation Circuit", 5 Oct. 1992, abstract.
Takeya Kamakura, "Demodulator", 28 May 1992, abstract.
Kameo Yohdoh
Matsumoto Kazuo
Suzuki Jun
Butts Karlton C.
Ferguson Jr. Gerald J.
Luther William
Satellite Communication Laboratory Co., Ltd.
Tse Young T.
LandOfFree
Multi-phase PSK signal decoder including phase display generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-phase PSK signal decoder including phase display generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-phase PSK signal decoder including phase display generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1513425