Cascaded transmission system parameter estimation method , cascaded transmission system parameter estimation device , program

摘要

PROBLEM TO BE SOLVED: To provide a technique for estimating a parameter of a cascade type transfer system of a nonlinear system and a linear system such that a nonlinear system estimation parameter a^(n) can be updated as long as an error signal e(n) is not zero even when the level of an input signal x(n) is smaller than the nonlinear system estimation parameter a^(n) with respect to a nonlinear model modeled with a hard clip function.;SOLUTION: The level of the input signal x(n) is compared with a nonlinear system estimation model parameter a^(n) and then when the level of the input signal x(n) is not larger than the nonlinear system estimation model parameter a^(n), a non-zero value which decreases as the nonlinear system estimation model parameter a^(n) increases is output as an estimation partial differential value s^'(n) as to the nonlinear system estimation model parameter a^(n) of a nonlinear system estimated value s^(n), but when not, a partial differential value of the nonlinear system estimated value s^(n) is output as the estimation partial differential value s^'(n).;COPYRIGHT: (C)2014,JPO&INPIT