Adaptive digital corrector amplitude-frequency characteristics of the channels

This work presents method for description of operation of digital correct-tor for telecommunication channel amplitude-frequency response and computing of channel parameters. Proposed corrector is based on non-recursive digital filter with unsymmetrical parameters related to filter central parameter. That filter is jointed at the input or output of the channel. Amplitude-frequency response characteristic form is approximated by second order polynomial. Polynomial approximation parameters are evaluated by measurement of channel amplitude-frequency response and following solution of three linear equation system. Filter parameters are computed by formulas been derived from the general expression for Fourier series parameters.