Device and method for the data transmission or storage optimizin

Pulse or digital communications – Spread spectrum – Direct sequence

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380 15, 455102, H04L 700

Patent

active

052710432

ABSTRACT:
A device and a method for the transmission or storage of data optimizing the use of the pass-band. Also, a method for transmission by phase modulation. In order to obtain high data throughput rates, the synchronization of a transmission clock with the reception clocks is used. This synchronization is gotten, for example, by transmission of a pseudo-random code and by the convolution or correlation of the received signals with the pseudo-random code. The invention also enables the elimination of multiple echoes by computation. The invention can be applied chiefly to the transmission of radio programs, television broadcasts or digital data.

REFERENCES:
patent: 3564412 (1971-02-01), Whang et al.
patent: 4171513 (1979-10-01), Otey et al.
patent: 4280222 (1981-07-01), Flower

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