Synchronization pulse generator in spread spectrum communication

Details Synchronization pulse generator in spread spectrum communication Synchronization pulse generator in spread spectrum communication

1987-10-09

1989-08-22

Cangialosi, Salvatore

Pulse or digital communications

Repeaters

Testing

H04K 100, H04L 900

Patent

active

048603074

ABSTRACT:
A synchronization pulse generator in a spectrum spread communication system includes first and second envelope detectors for subjecting a correlation output of a spectrum spread signal to envelope detection; a threshold value generator for generating a threshold value having a level corresponding to an output from the second envelope detector; and a comparator for comparing an output level of the first envelope detector with a threshold value generated by the threshold value generator, and outputting an initial synchronization pulse.

REFERENCES:
patent: 3916313 (1975-10-01), Lowry
patent: 4037159 (1977-07-01), Martin
patent: 4122393 (1978-10-01), Gordy et al.
patent: 4285060 (1981-08-01), Cobb et al.
patent: 4301537 (1981-11-01), Roos
patent: 4385401 (1983-05-01), Jagnow et al.
patent: 4435821 (1984-03-01), Ito et al.
patent: 4468784 (1984-08-01), Jagnow et al.

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