Adaptive signal processing
Adaptive echo cancellation using least mean mixed-norm algorithm
IEEE Transactions on Signal Processing
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A newly developed adaptive scheme for system identification is proposed. The proposed algorithm is a mixture of two norms, namely, the l2-norm and the lp-norm (p ≥ 1), where a controlling parameter in the range [0, 1] is used to control the mixture of the two norms. Existing algorithms based onmixed normcan be considered as a special case of the proposed algorithm. Therefore, our algorithm can be seen as a generalization to these algorithms. The derivation of the algorithm and its convexity property are reported and detailed. Also, the first moment behaviour as well as the second moment behaviour of the weights is studied. Bounds for the step size on the convergence of the proposed algorithm are derived, and the steady-state analysis is carried out. Finally, simulation results are performed and are found to corroborate with the theory developed.