document: Blind identification of non-stationary MA systems A new adaptive algorithm for blind identification of time-varying MA channels is derived . This algorithm proposes the use of a novel system of equations derived by combining the third - and fourth-order statistics of the output signals of MA models . This overdetermined system of equations has the important property that it can be solved adaptively because of their symmetries via an overdetermined recursive instrumental variable-type algorithm . This algorithm shows good behaviour in arbitrary noisy environments and good performance in tracking time-varying systems
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