Receiver for phase-shift modulated carrier signals

Details Receiver for phase-shift modulated carrier signals Receiver for phase-shift modulated carrier signals

1982-08-09

1984-07-24

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 83, 375119, 329124, H04L 2706, H03D 322

Patent

active

044621094

ABSTRACT:
A receiver for recovering digital data from a phase-shift modulated carrier in a data communications system, wherein the length of the message preamble is insufficient to permit synchronous detection, divides the received signal into two channels. The channels having the larger and smaller signals are selected as the data and the servo channel, respectively. The output of the servo channel is utilized to control the local oscillator frequency in order to provide for synchronous detection during at least a part of the message data.

REFERENCES:
patent: 4143322 (1979-03-01), Shimamura
patent: 4409562 (1983-10-01), Kurihara

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