CAJ | 학술논문

利用双曲正切函数对凸组合最小均方（Convex Combination of Least Mean Square，CLMS）算法进行了改进，提出了 Th-VSCLMS（Tanh Variable Step Convex Combined Least Mean Square）算法。理论分析表明：改进算法的,能优于普通的变步长算法。在不同信噪比下对 VSLMS（Variable Step Least Mean Square）、CLMS、Th-VSCLMS 算法进行了仿真对比分析，结果表明：Th-VSCLMS 算法的收敛,、稳态,、抗扰动,、低信噪比的滤波效果、计算量均得到较好的改善，且其凸组合滤波结构优于单一滤波结构。
이용쌍곡정절함수대철조합최소균방（Convex Combination of Least Mean Square，CLMS）산법진행료개진，제출료 Th-VSCLMS（Tanh Variable Step Convex Combined Least Mean Square）산법。이론분석표명：개진산법적,능우우보통적변보장산법。재불동신조비하대 VSLMS（Variable Step Least Mean Square）、CLMS、Th-VSCLMS 산법진행료방진대비분석，결과표명：Th-VSCLMS 산법적수렴,、은태,、항우동,、저신조비적려파효과、계산량균득도교호적개선，차기철조합려파결구우우단일려파결구。
The Convex Combination Least Mean Square(CLMS)algorithm is improved by means of hyper-bolic tangent function and the Tanh Variable Step Convex Combination Least Mean Square (Th-VS-CLMS)algorithm is proposed accordingly.Theoretically,the improved algorithm is superior to conven-tional variable step algorithm,and VSLMS,CLMS and Th-VSCLMS algorithm are compared and analyzed at different SNR.Simulation results show that Th-VSCLMS is well improved at convergence,steady,anti-disturbance,filtering effect in the low SNR as well as computation,and the convex combination have bet-ter filter structure than a single filter structure.