【摘要】 提出了一种简单的变步长α-LMS算法(vα-LMS),并给出了它的设计方法。导出了描述α-LMS算法收敛过程的动态方程,并据此讨论了α-LMS算法的算法性能。与vα-NLMS算法相比,Vα-LMS算法的优点是简单易行、计算量小,但它对输入信噪比的稳健性(RObustncss)却劣于Vα—NLMS算法。Vα-LMS算法的性能将优于Dα-LMS算法。计算机模拟结果与理论分析结果吻合较好.更多还原

【Abstract】 In this paper,a simple variable stepsize a-LMS adaptive filtering algorithm(Va-LMS) has been presented; the design method for this algorithm is given; and the dynamic equation, which is used to analysis the performance of this algorithm has been derived. The performance of Va-LMS algorithm, compared with the Va-NLMS algorithm (which is presented by[1] )shows the advantage of simplicity, easy implemention,but the robustness of ratio of the input signals to noise ratio for the Va-LMS algorithm is worse than Va-NLMS algorithm. On overall performance, Va-LMS algorithm is better than the Da-LMS algorithm( which is presented by [2]). The results of computer simulation are in good match with the theoretical analysis.更多还原