MULTI-CHANNEL SYSTEM IDENTIFICATION DEVICE

摘要

A multi-channel system identification device includes a coefficient update unit for updating the coefficient of a FIR filter by a first adaptive algorithm so that an identification error is minimum in accordance with the signal acquired from a connection unit. In the first adaptive algorithm, a FIR filter coefficient vector H<nm>j+1 at time j + 1 from the n-th input channel to the m-th output channel is created by adding an update vector to the coefficient vector H<nm>j at time j. The update vector is created by dividing a numerator vector by a normalization denominator and multiplying it by a step size. The numerator vector is created by multiplying a second vector by an identification error E<m>j at the m-th output channel. The normalization denominator is decided according to an accumulated addition value of an inner product of the first vector and the second vector about the input channel. The first vector is an input signal vector X<n>j of each input channel. The second vector is a vector decided according to the input signal vector X<n>j of each input channel.