Pulse or digital communications – Repeaters – Testing
Patent
1992-12-18
1994-02-08
Barron, Jr., Gilberto
Pulse or digital communications
Repeaters
Testing
375 82, 375 95, H04L 2730, H04L 2706, H03D 318
Patent
active
052854710
ABSTRACT:
A spread spectrum receiving device is disclosed, in which data demodulation is effected in such a way that a received signal is divided into two parts, from which a COS PN code chip signal and a SIN PN code chip signal are obtained; that these chip signals are A/D-converted by means of A/D converters and then given to digital correlators; and that correlation outputs thus obtained are combined to synthesize a final correlation output. Further there are disposed a plurality of steering gates on the input side of the A/D converters. The a/D conversion can be effected in the neighborhood of a point, where the level of PN code chip waveforms is stable, owing to the fact that the steering gates are controlled by control signals obtained by processing the correlation outputs or output of the A/D conversion. In this way it is made unnecessary to raise the sampling frequency for the A/D conversion and to increase the number of stages of shift registers in the digital correlators.
REFERENCES:
patent: 4616364 (1986-10-01), Lee
patent: 5181226 (1993-01-01), Cantwell
patent: 5208829 (1993-05-01), Soleimani et al.
patent: 5208830 (1993-05-01), Cornec et al.
Barron Jr. Gilberto
Clarion Co. Ltd.
LandOfFree
Spread spectrum receiving device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spread spectrum receiving device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread spectrum receiving device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-703791