Noncoherent pulse position and phase shift keying...

Details Noncoherent pulse position and phase shift keying... Noncoherent pulse position and phase shift keying...

2005-06-21

2005-06-21

Mis, David (Department: 2817)

Modulators

Pulse or interrupted continuous wave modulator

Plural modulation

C332S103000, C332S112000, C375S239000, C375S279000, C375S295000, C375S308000, C375S316000, C375S329000

Reexamination Certificate

active

06909337

ABSTRACT:
Disclosed is a noncoherent pulse position and phase shift keying (PPPSK) transmission/reception system and a transmission/reception signal processing method therefor. Transmission system has an information generation unit for generating information data; a modulation unit for deciding a phase and a timing position corresponding to generated information data; and a wavelet generation unit for generating a wavelet based on the decided phase and timing position, and the reception system has an offset unit for mixing the reception signal with a high-frequency component corresponding to a center frequency of a transmission frequency band and offsetting a high frequency of the reception signal; a demodulation unit for generating at least one reference signal based on a previous signal precedingly received with respect to the reception signal and mixing the reference signals and the reception signal; and a decision unit for deciding information data corresponding to the reception signal based on mixing results.

REFERENCES:
patent: 6118805 (2000-09-01), Bergstrom et al.

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