Baseband-controlled passband equalizing arrangement

Details Baseband-controlled passband equalizing arrangement Baseband-controlled passband equalizing arrangement

1989-03-15

1992-02-11

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 14, H04B 304

Patent

active

050881108

ABSTRACT:
A baseband-controlled passband equalizing arrangement comprises a passband correction circuit for the data signals transmitted by modulating a carrier frequency, a first demodulation circuit which cooperates with a carrier recovery circuit for converting these carrier-modulated data signals into baseband signals, and a control circuit acting on the variable elements provided in the passband correction circuit in response to an estimated error of the baseband signals. The passband correction circuit produces a passband output signal v(t), which is a continuous function of the time t, in response to a passband input signal x(t), which is a continuous function of the time t, in accordance with the relation: ##EQU1## where r.sub.m, .psi..sub.m, .rho..sub.j, .phi..sub.j are variable elements, and .tau..sub.j, .tau..sub.m are fixed delays and M, N are constants.

REFERENCES:
patent: 3775688 (1973-11-01), Hinoshita et al.
patent: 3878468 (1975-04-01), Falconer et al.
patent: 3992616 (1976-11-01), Acker
patent: 4298983 (1981-11-01), Kawai et al.
patent: 4315318 (1982-02-01), White
patent: 4320526 (1982-03-01), Gitlin
patent: 4361892 (1982-11-01), Martin
patent: 4376308 (1983-03-01), McNair
patent: 4524422 (1985-06-01), Kasuga

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