System and method of low power demodulation of continuous...

Details System and method of low power demodulation of continuous... System and method of low power demodulation of continuous...

2007-06-12

2007-06-12

Corrielus, Jean B. (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S324000

Reexamination Certificate

active

10418214

ABSTRACT:
A radio system demodulates a continuous phase modulation waveform with a pulse count demodulator. The use of a pulse count demodulator reduces the receiver complexity and reduces power consumption, which makes such a system well suited for hand held or mobile units. The pulse count demodulator delays the CPM signal by a time increment t0, and subtracts the delayed signal from the original signal creating a difference signal. The difference signal is rectified and low pass filtered resulting in an average signal representing the phase change. In non-square wave CPM signals, the signal is first clipped removing the amplitude information.

REFERENCES:
patent: 3818355 (1974-06-01), Ishigaki
patent: 4539524 (1985-09-01), Goode
patent: 4727580 (1988-02-01), Sakai
patent: 4926440 (1990-05-01), Mikoshiba et al.
patent: 5170131 (1992-12-01), Takahiro et al.
patent: 5808509 (1998-09-01), Baltus et al.
patent: 5949827 (1999-09-01), DeLuca et al.
patent: 6985541 (2006-01-01), Luff
Christian Halper, Michael Heiss, and Georg Brasseur, “Digital- to- Analog Conversion by Pulse-Count Modulation Methods” IEEE Transactions on Instrumentations and Measurement, vol. 45, No. 4, Aug. 1996.
Asano, D.K., Leib, H., & Pasupathy, S., “Phase Smoothing Functions for Continuous Phase Modulation,” IEEE Trans. on Signal Processing, vol. 42, No. 2/3/4, Feb./Mar./Apr. 1994.
Aulin, T., Rydbec, N., & Sundberg, C.-E., “Continuous Phase Modulation-Part II: Partial Response Signaling,” IEEE Trans. on Communications, vol. COM-29, No. 3, Mar. 1981.
Colavolpe, G. and Raheli, R., “Reduced-Complexity Detection and Phase Synchronization of CPM Signals,” IEEE Transactions on Communications, vol. 45, No. 9, Sep. 1997.
Norris, J.A., “Low Power Method for Demodulation of Continuous Phase Modulated Waveforms,” MILCOM2002, Oct. 7, 2002.

Affiliated with

Also associated with

Rating

System and method of low power demodulation of continuous... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method of low power demodulation of continuous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method of low power demodulation of continuous... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3813308