ADAPTIVE TRANSFER FUNCTION ESTIMATING METHOD AND ESTIMATING DEVICE USING THE SAME

摘要

In an adaptive estimation of a transfer functionof an unknown system, a forward linear predictioncoefficient vector a(k) of an input signal x(k), the sumof forward a posteriori prediction-error squares F(k), abackward linear prediction coefficient vector b(k) of theinput signal x(k) and the sum of backward a posterioriprediction-error squares B(k) are computed. Letting astep size and a pre-filter deriving coefficient vector berepresented by µ and f(k), respectively, a pre-filtercoefficient vector g(k) is calculated by a recursionformula for the pre-filter coefficient vector g(h), whichis composed of the following first and second equations: