Code error detecting system in digital code transmission

Details Code error detecting system in digital code transmission Code error detecting system in digital code transmission

1975-08-11

1976-08-31

Safourek, Benedict V.

Telegraphy

Systems

Printing

178 67, 3401461AQ, H04L 110

Patent

active

039784061

ABSTRACT:
A code error detection system in a digital phase modulation communication system comprises on the transmitter side a first code train generator for generating a pseudo-random code train and a second code train generator for generating codes which are complementary to each other at n-bit intervals. A 4-phase phase modulator is driven by another code representative of the exclusive OR function of the pseudo-random and complementary codes.

REFERENCES:
patent: 3806647 (1974-04-01), Dohne et al.
patent: 3891959 (1975-06-01), Tsuji et al.

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