Spread spectrum communication device

Details Spread spectrum communication device Spread spectrum communication device

1992-01-31

1993-07-13

Barron, Jr., Gilberto

Pulse or digital communications

Repeaters

Testing

380 31, H04K 110

Patent

active

052280551

ABSTRACT:
On the transmitter side of a spread spectrum communication device according to the present invention, transmission date are converted into a plurality of parallel data sets by a serial-parallel convertor and spread-spectrum-modulation is effected by means of PN code generators and selectors. Different modulated outputs are delayed by delay devices, using a sounder channel and the phase thereof as a reference. The delayed outputs and the output of the sounder channel are added by an adder, multiplexed and transmitted.
On the receiver side correlation of a received signal with a reference signal is formed by a correlator and a correlation pulse is obtained from the correlation output. Data are reproduced by means of a sounder detecting circuit, a sampling pulse generating circuit and an information detecting circuit.
In this way data reproduction can be effected with a high efficiency by means of a single correlator.

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patent: 5063571 (1991-11-01), Vancraeynest
patent: 5086467 (1992-02-01), Makk
patent: 5138632 (1992-08-01), Uchida
patent: 5144641 (1992-09-01), Akazawa et al.

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