Patent Document ID: 20080189087
Application ID: 12009879
Patent Flag: 0

Claim One:
1. An arrangement for the optimal estimation of linear parameters P l and nonlinear parameters P n of a model 11 , describing a transducer 1 ; said transducer 1 having at least one transducer input 7 which is supplied with an electrical, acoustical or arbitrary input signal x(t) and at least one transducer output 9 which generates an electrical, acoustical or arbitrary output signal y(t)=y lin (t)+y nlin (t), which contains a linear signal part y lin (t) and a nonlinear signal part y nlin (t), said linear parameters P l describing the linear signal part y lin (t) and the nonlinear parameters P nlin describing the nonlinear signal part y nlin (t) by using the model 11 , comprising: a transformation system 55 having a first transformation input 61 connected to receive said input signal x(t), a second transformation input 57 , connected to receive said output signal y(t), said transformation system arranged to produce a first transformation output 67 , 69 comprising time signals in which information on said linear signal part y lin (t) is suppressed and information on said nonlinear signal part y nlin (t) is preserved, and a second transformation output 63 , 65 , in which information on the linear signal part y lin (t) is preserved, a nonlinear estimation system 23 having a signal input 33 , 35 connected to receive said first transformation output 67 , 69 and having an output 27 in which bias-free estimated nonlinear parameters P n of the model 11 are generated even if the generation of the linear signal part y lin (t) by model 11 is incomplete, and a linear estimation system 21 having an input connected to receive said second transformation output 63 , 65 and having an output 25 comprising bias-free estimated linear parameters P l of said model.