Spread spectrum communication apparatus

Details Spread spectrum communication apparatus Spread spectrum communication apparatus

1994-07-11

1996-02-27

Gregory, Bernarr E.

Pulse or digital communications

Repeaters

Testing

375205, 375206, 375365, 375367, H04B 169

Patent

active

054954983

ABSTRACT:
In a spread spectrum communication apparatus, frame synchronization is established by inserting data for frame synchronization as a part of a synchronization word of a transmission frame on a sending side and detecting the data for frame synchronization from reproduction data of a reception frame on a receiving side. A frame synchronization pseudo-noise train generator section generates a pseudo-noise train for frame synchronization used as the frame synchronization data. A frame synchronization correlator section receives the pseudo noise train for frame synchronization and reproduction data to output a signal when the value of correlation of the pseudo noise train for frame synchronization and the reproduction data is not smaller than a reference value. A reception frame timing generator section outputs a reception synchronization word timing signal with the output signal of the frame synchronization correlator section being taken as a reference.

REFERENCES:
patent: 4383322 (1983-05-01), Halpern et al.
patent: 5177766 (1993-01-01), Holland et al.

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