Frequency domain automatic equalizer having logic circuitry

Details Frequency domain automatic equalizer having logic circuitry Frequency domain automatic equalizer having logic circuitry

1976-06-01

1977-05-31

Gensler, Paul L.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

325 42, 235156, H03H 716

Patent

active

040272575

ABSTRACT:
An automatic equalizer for calculating the equalization transfer function of a transmission channel and applying same to equalize received signals. The initial calculation as well as the equalization proper are conducted entirely within the frequency domain. Equalization coefficients are obtained using successive approximations approaching the desired values. The equalization coefficients may be adjusted independently from each other inasmuch as these coefficients are not interdependent. Successive approximations of the coefficients differ by fixed increments of the real or imaginary components. A feedback circuit is utilized in generating the successive approximations wherein sign or polarity information is used to determine the adjustment necessary for convergence.

REFERENCES:
patent: 3614673 (1971-10-01), Kang et al.
patent: 3651316 (1972-03-01), Gibson
patent: 3715666 (1973-02-01), Mueller et al.
patent: 3851162 (1974-11-01), Munoz

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