Method and apparatus for equalizing transmission line characteri

Pulse or digital communications – Equalizers – Automatic

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375341, 375346, 3647242, H03H 730, H03D 104, H04L 2706

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054369282

ABSTRACT:
In an apparatus for equalization in an impulse response of mobile transmission which varies fast in mobile radio communication, a signal generating circuit outputs a signal sequence undergoing transition at a predetermined period and corresponding to each state transition and a signal sequence corresponding to the path of each state transition. An adaptive filter receives the signal sequence corresponding to each state transition and outputs an estimated signal for each state transition. The apparatus also includes state estimating circuits for performing state estimation by using the square of an estimation error obtained by subtracting each estimated signal from a sampled signal, and a control circuit for controlling the tap coefficient of the adaptive filter by using the RLS algorithm in order to minimize the square of the estimation error.

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