| 摘要 |
The method involves comparison of an input signal (xt) with an observation signal (yt) to produce an error signal (et). The error signal is fed to an FIR identification filter (18) with a response which represents the system response. The coefficients of the identification filter are adapted according to the input signal, the error signal and an adaptive step for filter coefficient adjustment. The value of the adaptive step (mu) is determined by the expression mu = a/(c+d*P2t/P1t) where a and c are constants, P1t is the estimated input power, P2t is the estimated observation signal at a given instant or a component of interference in the observation signal.
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