Bidirectional data transmission system

Details Bidirectional data transmission system Bidirectional data transmission system

1992-09-11

1993-08-10

Gregory, Bernarr E.

Pulse or digital communications

Repeaters

Testing

380 34, 380 35, H04L 2730

Patent

active

052356167

ABSTRACT:
A bidirectional data transmission system using the technique known as spectrum spreading by direct sequence comprises a first transmitter-receiver assembly consisting of a first transmitter section which generates a coded first data signal for transmission by modulation of a radioelectrical carrier by a spreading code of which the delay is modulated under the control of the first data, and a first receiver section which receives a coded second data signal and restores the second data therefrom, and a second transmitter-receiver assembly consisting of a second transmitter section which generates the coded second data signal for transmission by modulation of a transmission carrier by a spreading code, the carrier itself being modulated by the second data, and a second receiver section which receives the coded first data signal and restores the first data therefrom by demodulation of the delay in the spreading code contained in the coded first data signal, the restored first data being used to control the delay of the spreading code generated for the second transmitter section.

REFERENCES:
patent: 4324002 (1982-04-01), Spilker, Jr.
patent: 5010557 (1991-04-01), Chun

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