Direct-sequence spread-spectrum communication system

Details Direct-sequence spread-spectrum communication system Direct-sequence spread-spectrum communication system

1995-08-04

1997-11-18

Bocure, Tesfaldet

Pulse or digital communications

Repeaters

Testing

370342, 375208, H04K 100

Patent

active

056895259

ABSTRACT:
A clock signal generator produces a basic clock signal. A variable delay device is operative for delaying the basic clock signal by an adjustable interval and thereby converting the basic clock signal into a delay-resultant clock signal. A pseudo-noise code is generated at a timing depending on the delay-resultant clock signal. A spread-spectrum information signal is despread into a non-spread information signal in response to the pseudo-noise code. A correlator detects a correlation between the spread-spectrum information signal and the pseudo-noise code. The adjustable interval provided by the variable delay device is controlled in response to the detected correlation to provide synchronization between the spread-spectrum information signal and the pseudo-noise code.

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patent: 5550811 (1996-08-01), Kaku et al.
patent: 5590160 (1996-12-01), Ostman

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