Automatic equalizer

Details Automatic equalizer Automatic equalizer

1993-04-23

1995-06-06

Lee, Benny

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

375231, H03G 1100, H04B 314

Patent

active

054226066

ABSTRACT:
An automatic equalizer includes a transversal filter having delay elements with N+1 taps and N+1 multipliers for outputting an output signal Y.sub.n which is described by the following formula (A) depending on a modulated input signal X.sub.n which is received via a transmission path and a coefficient C.sub.i.sup.(n) of each of the multipliers which are arranged in a sequence such that an integer i increases from -(N/2) to (N/2) towards latter stages of the delay elements, ##EQU1## a gain controller for multiplying a gain coefficient g.sup.(n) to the output signal Y.sub.n of the transversal filter to produce an equalizer output, and a control circuit responsive to the equalizer output for variably setting the coefficient C.sub.i.sup.(n) of the transversal filter means described by the following formula (B) and the gain coefficient g.sup.(n) of the gain controller described by the following formula (C)

REFERENCES:
patent: 4097807 (1978-05-01), Fujimura
patent: 4607230 (1986-08-01), Kaku et al.
patent: 4872184 (1984-10-01), Yamaguchi

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