Communication system providing amplifier gain by half-cycle carr

Details Communication system providing amplifier gain by half-cycle carr Communication system providing amplifier gain by half-cycle carr

1983-04-21

1985-05-21

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

455 68, H04J 702, H04J 302

Patent

active

045190674

ABSTRACT:
A communication system enables a plurality of wide band signals to be carried over a common signal path. Each one of the information channels is used to amplitude modulate selected half-cycles of a common carrier signal. Because successive half-cycles of the carrier signal contain information relating to only one of the information channels any non-linearities in the transmission system do not introduce intermodulation distortions. Successive half-cycles of a carrier signal 5 are routed to separate amplifiers 15, 16, 17 and 18, and the gain of each amplifier is controlled by the signal amplitude of respective information channels 1, 2, 3 and 4. The various half-cycles are then combined at a combiner 21 to re-form the carrier signal which is transmitted over a signal path to a receiver. One of the channels is provided with an identity marker to enable the information channels to be correctly separated and identified at the receiver. By increasing the frequency of the common carrier signal a large number of separate information channels can be carried without requiring the use of a transmission path having an excessively wide bandwidth.

REFERENCES:
patent: Re25699 (1964-12-01), Kidd
patent: 2907830 (1959-10-01), Boutry et al.
patent: 2921981 (1960-01-01), Kidd
patent: 3013147 (1961-12-01), Gverth
patent: 3436484 (1969-04-01), Whitlow
patent: 3711651 (1973-01-01), Connell

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