Common error hierarchical NLMS algorithm
Barcelona（2011）
摘要
Two-stage common error hierarchical normalized least-mean-square (NLMS) algorithm is presented in the context of network echo cancellers and sparse systems. The suggested adaptive filter structure is generic, uses a common error feedback for both stages, and is applicable with any type of error minimization technique. The simulation results show that the two-stage method exploits the sparseness of the system better than the proportionate NLMS (PNLMS) while keeping the initial convergence rate intact and improving the steady state convergence time significantly.
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关键词
adaptive filters,convergence,echo suppression,error analysis,least mean squares methods,adaptive filter,common error feedback,common error hierarchical nlms algorithm,convergence rate,error minimization technique,network echo canceller,normalized least-mean-square algorithm,sparse system,two-stage method,vectors,correlation,mathematical model
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