Gain tracker for digital modem

Details Gain tracker for digital modem Gain tracker for digital modem

1984-12-06

1986-12-23

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 39, 375118, 455245, H04L 2708

Patent

active

046317384

ABSTRACT:
A phase and gain corrector is described for a modem for receiving QAM or PSK-encoded signals. An ideal vector corresponding to the received vector is generated and the difference or error vector is resolved into a radial component in the direction of the ideal vector a tangential component. A gain corrector and a phase corrector variable are calculated from said radial and tangential components of the error vector and used to correct the gain and phase of the received signals.

REFERENCES:
patent: 4253184 (1981-02-01), Gitlin et al.
patent: 4320526 (1982-03-01), Gitlin
patent: 4532640 (1985-07-01), Bremer et al.
patent: 4555790 (1985-11-01), Betts et al.

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