Method and device for multistate modulation and demodulation wit

Details Method and device for multistate modulation and demodulation wit Method and device for multistate modulation and demodulation wit

1987-12-07

1990-02-27

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 371, H04L 2710

Patent

active

049052560

ABSTRACT:
A method and device are provided for multistate modulation and demodulation with adjustable protection level, consisting in separating the binary signals, before demodulation, into critical and non critical signals, in attributing to the non critical signals all the states of the modulation and in attributing to the critical signals a reduced number of states which are, in the modulation diagram, the furthest removed from each other.

REFERENCES:
patent: 3860874 (1975-01-01), Malone et al.
patent: 4020461 (1977-04-01), Adams et al.
patent: 4096442 (1978-06-01), McRae et al.
patent: 4404532 (1983-09-01), Welti
patent: 4639935 (1987-01-01), Jarnestedt et al.

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