Data transmission system operating on the spread spectrum princi

Details Data transmission system operating on the spread spectrum princi Data transmission system operating on the spread spectrum princi

1980-07-07

1982-08-24

Britton, Howard

Pulse or digital communications

Repeaters

Testing

364604, 364728, H04B 112, H04B 1500, H04K 104

Patent

active

043464750

ABSTRACT:
According to the invention, it is proposed to use the code words D as the spreading word for the spectrum. The auto-correlation function of these words have zero values for all even temporary shifts other than the zero shift, the auto-correlation function then assuming the maximum or the minimum value. In addition, use is made of the secondary lobes of this auto-correlation function for carrying out, at the receiving end, the synchronization of a clock in the rhythm of the binary elements forming the spreading code words. Use: counteracting radio-electric interferences.

REFERENCES:
patent: 3590380 (1971-06-01), Zegers
patent: 3666889 (1972-05-01), Zegers
patent: 4209834 (1980-06-01), Rabow
patent: 4241312 (1980-12-01), Barnes

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