Packet transmission of digital signals over a high capacity chan

Details Packet transmission of digital signals over a high capacity chan Packet transmission of digital signals over a high capacity chan

1986-07-30

1989-04-11

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 20, H04J 302

Patent

active

048212610

ABSTRACT:
For full time transmission of digital signals, in the form of successive bits, over a satellite broadcasting channel, two multiplexes each having a bandwidth substantially half that of the channel are transmitted on two quadrature carriers, with four phase type modulation and with symbols offset on the two carriers. At reception one of the multiplexes is demodulated by phase demodulation, phase differential demodulation or phase coherent demodulation, with physical separation of one binary element out of two.

REFERENCES:
patent: 3666890 (1972-05-01), Wade
patent: 3855533 (1974-12-01), Schueli
patent: 4267591 (1981-05-01), Wissel et al.
patent: 4347616 (1982-08-01), Murakami
patent: 4661945 (1987-04-01), Hirosaki

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