Demodulator for demodulating pulse position modulated signal

Details Demodulator for demodulating pulse position modulated signal Demodulator for demodulating pulse position modulated signal

2007-03-08

2008-08-19

Chang, Joseph (Department: 2817)

Demodulators

Pulse or interrupted continuous wave demodulator

Pulse position, frequency, phase or spacing demodulator

C375S239000

Reexamination Certificate

active

07414463

ABSTRACT:
A PPM signal demodulator for demodulating a PPM signal transmitted in a UWB radio communication system includes a rectifier for rectifying a received PPM signal to obtain an absolute value signal, integrator and comparators for integrating the absolute value signal for every first, second and third integral times and comparing the integrated values for the integral times, absolute value circuits for converting respective outputs of the integrator and comparators to corresponding absolute values, moving average circuits for moving-averaging respective outputs of the absolute value circuits, a determining circuit for generating demodulation data on the basis of the integrated and compared result by the integrator and comparator, and a main control for generating, on the basis of the outputs of the moving average circuits, integral interval control signals that control the first, second and third integral times to supply them to the respective integrator and comparators.

REFERENCES:
patent: 5691665 (1997-11-01), Ohtani
patent: 5977822 (1999-11-01), Rybicki et al.
patent: 6292051 (2001-09-01), Su et al.
patent: 2003/0174779 (2003-09-01), Sugaya et al.
patent: 05-284129 (1993-10-01), None

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