Pulse or digital communications – Spread spectrum – Direct sequence
Patent
1991-11-08
1993-12-14
Kuntz, Curtis
Pulse or digital communications
Spread spectrum
Direct sequence
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
Anastassiades Jean
Auvray Gerard
Desodt Guy
Elleaume Philippe
Fouche Yvon
"Thomson-CSF"
Bocure Tesfaldet
Kuntz Curtis
Plottel Roland
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