Fast start-up adaptive equalizer communication system using two

Details Fast start-up adaptive equalizer communication system using two Fast start-up adaptive equalizer communication system using two

1975-07-23

1976-08-31

Swann, III, Glen R.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

325 30, 328162, 333 18, 3401461AX, H04L 110

Patent

active

039784070

ABSTRACT:
Initial Adjustment of a receiver having an automatic adaptive equalizer in a modem communication system is accomplished by employing a data transmission rate lower than normal for an early segment of each burst of signals. At this lower rate, accurate reception is possible without complete adaptation of the equalizer. These same (early segment) signals are used to adapt the equalizer in a decision-directed mode. When the adaptation is completed the system switches to its normal higher rate of data transmission.

REFERENCES:
patent: 3629736 (1971-12-01), Hirsch et al.
patent: 3648171 (1972-03-01), Hirsch
patent: 3715666 (1973-02-01), Mueller et al.
patent: 3887768 (1975-06-01), Forney, Jr. et al.
patent: 3935535 (1976-01-01), Motley et al.

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