Mixed modulation level communication system

Details Mixed modulation level communication system Mixed modulation level communication system

1989-03-30

1991-09-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 37, 34082544, H04J 304, G08B 522

Patent

active

050519930

ABSTRACT:
A communication system has an information signal having a plurality of data streams. The data streams are simultaneously modulated on a multi-level symbol transmission. The data streams may have either independent or dependent signalling protocols. A transmitting device generates the information in one of several embodiments. A first receiver receives the information signal and process only a first data stream for messages. A second receiver receives the information signal and process only the second data stream for meassages. A third receiver is capable of selectively receiving and processing a plurality of data streams. The third receiver is shown in several embodiments for selecting the data streams.

REFERENCES:
patent: 2650266 (1948-07-01), Browning
patent: 2674653 (1954-04-01), Rudolph et al.
patent: 2971059 (1961-02-01), Heaton-Armstrong
patent: 2989591 (1961-06-01), Heidester
patent: 3048657 (1962-08-01), Buff
patent: 4498166 (1985-02-01), Esposito

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