Title:
PPM信号復調装置
Document Type and Number:
Japanese Patent JP4239859
Kind Code:
B2
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.
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| JPS5923905 | DEMODULATOR |
| WO/2006/098875 | METHOD AND DEVICE FOR RECEIVING OR TRANSMITTING A SIGNAL WITH ENCODED DATA |
Inventors:
Hirotsugu Akahori
Yoshihito Shimazaki
Yoshihito Shimazaki
Application Number:
JP2004061515A
Publication Date:
March 18, 2009
Filing Date:
March 05, 2004
Export Citation:
Assignee:
Oki Electric Industry Co., Ltd.
International Classes:
H03K9/04; H04L25/49; H03M1/12; H04B1/7163; H04J13/00
Domestic Patent References:
| JP2004208110A | ||||
| JP2004320083A |
Attorney, Agent or Firm:
Takao Katori