Multiplex transmitter apparatus

Details Multiplex transmitter apparatus Multiplex transmitter apparatus

1980-10-24

1983-04-26

Brigance, Gerald L.

Multiplex communications

Wide area network

Packet switching

370112, H04J 302

Patent

active

043815600

ABSTRACT:
Combined amplitude and phase modulation of a multiplexed serial data stream is employed to generate a composite signal for transmission to a receiver. The composite signal includes a prescribed timing signal identifying a predetermined bit position in at least each n.sup.th symbol and group of n.multidot.M bits in the serial data stream. The timing signal forms the amplitude modulation component of the composite signal and is utilized by the receiver for properly resolving an n-fold ambiguity which arises when each symbol includes a nonintegral rational number of frames.

REFERENCES:
patent: 3128342 (1964-04-01), Baker
patent: 3564412 (1971-02-01), Whang et al.
patent: 3619503 (1971-11-01), Ragsdale
patent: 3749843 (1973-07-01), Roycraft et al.
patent: 3816657 (1974-06-01), Fletcher et al.
patent: 3872257 (1975-03-01), Bleickardt et al.
patent: 3943285 (1976-03-01), Ragsdale et al.
patent: 4008373 (1977-02-01), Nash et al.
patent: 4170764 (1979-10-01), Salz et al.
"Performance of Combined Amplitude and Phase-Modulated Communication Systems" IRE Transactions on Communications Systems, vol. CS-8, No. 4, pp. 232-237, Dec., 1960.

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