TRANSMISSION CHARACTERISTIC CORRECTION EQUALIZER FOR CALCULATING PARAMETER OF TRANSFER FUNCTION BASED ON TRANSMISSION FREQUENCY CHARACTERISTIC AND PARAMETER CALCULATING METHOD FOR TRANSMISSION CHARACTERISTIC CORRECTION EQUALIZER

摘要

PURPOSE: To calculate a coefficient parameter of a transfer characteristic based on an equalized characteristic by a simple algorithm in an equalizer realized by a DSP or the like based on digital signal processing. ;CONSTITUTION: In the parameter calculation processing, a characteristic deviation obtained by subtracting a characteristic quantity of an object correction function from a characteristic quantity corresponding to a current parameter and a change in a characteristic quantity corresponding to when a variable parameter noted at present is changed minutely are multiplied for each frequency (S101-S103). Then the polarity of the total sum of the products at each frequency is calculated (S104, S105). Then the variable parameter is increased/decreased by a prescribed correction in response to the polarity and revised (S106). Thus, the arithmetic operation such as calculation of coefficients of simultaneous equations and solving of the simultaneous equations is not required different from a conventional method and the parameter is calculated with simple repetitive arithmetic operation.;COPYRIGHT: (C)1993,JPO&Japio