Signal quality-dependent adaptive recursive integrator

Details Signal quality-dependent adaptive recursive integrator Signal quality-dependent adaptive recursive integrator

1990-06-28

1993-04-13

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

4552422, 455305, 330 85, 330280, H04B 702, H04B 1500

Patent

active

052030164

ABSTRACT:
The gain of a recursive integrator is controlled so as to be adaptive to the quality of a received signal by comparing the magnitude of its emphasized information component with a reference voltage and controlling the gain of the integrator's feedback delay path in accordance with the difference between the peak value of the emphasized information component and the reference voltage. As a result, when the signal to noise ratio of the input signal is high, the gain can be reduced, so that the recursive loop will adapt quickly to changes in a multipath profile.

REFERENCES:
patent: 3440543 (1969-04-01), Polzl
patent: 3939437 (1976-02-01), Adam
patent: 4128848 (1978-12-01), Nakagawa
patent: 4546326 (1985-10-01), Van Uffelen et al.
patent: 4807035 (1989-02-01), Sayliss
patent: 4811404 (1989-03-01), Vilmur et al.
patent: 4829593 (1989-05-01), Hara
patent: 5051707 (1991-09-01), Fujita

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