LMS算法是一个搜索算法,假设w从某个给定的初始值开始迭代,逐渐使J(W)朝着最小的方向变化,直到达到一个值使J(w)收敛。考虑梯度下降算法(gradient descent algorithm),它通过给定的w值快速的执行如下的更新操作: 其中 为学习率(Learning rate)。 要对w更新,首先需要完成上面的求导,求导的结果参见下面的算法流程。
LMS算法是一个搜索算法,假设w从某个给定的初始值开始迭代,逐渐使J(W)朝着最小的方向变化,直到达到一个值使J(w)收敛。考虑梯度下降算法(gradient descent algorithm),它通过给定的w值快速的执行如下的更新操作: 其中 为学习率(Learning rate)。 要对w更新,首先需要完成上面的求导,求导的结果参见下面的算法流程。
LMS算法是一个搜索算法,假设w从某个给定的初始值开始迭代,逐渐使J(W)朝着最小的方向变化,直到达到一个值使J(w)收敛。考虑梯度下降算法(gradient descent algorithm),它通过给定的w值快速的执行如下的更新操作: 其中 为学习率(Learning rate)。 要对w更新,首先需要完成上面的求导,求导的结果参见下面的算法流程。
an improved variable step size LMS adaptive filtering algorithm is proposed to solve this contradiction.The methord is adopted that the step factor is used to realize variable step-size LMS The improved algorithm's step size establish a nonlinear function between the step size and the error signal...
关键词:自适应滤波器;LMS算法;DSP;FIR Realization ofAdaptiveFilter LMS Algorithm by DSP MA Jun,DUAN Xinwen,ZHAO Jianfei (Qinghai Normal University,Xining,810008,China) Abstract:Filter is widely used in digital signal processing.For the conventional filter has a fixed filter coefficients,optimal filterin...
LMS adaptive filter of the DSP to achieve Abstract The convergent speed and steady state error are affected bythe fixed step size and can notbe improved simultaneously in classical LMS algorithm. Therefore,to use it correctly in relevant fields, for this contradiction, after analyzing a variety of...
关键词:自适应滤波器;LMS算法;DSP;FIR 中图分类号:TN713 文献标识码:B 文章编号:1004—373X(2008)13—169—03 RealizationofAdaptiveFilterLMSAlgorithmbyDSP MAJun,DUANXinwen,ZHA0Jianfei (QinghaiNormalUniversity,Xining,810008,China) Abstract:Filteriswidelyusedindigitalsignalprocessing.Fortheconventionalfilterhasa...
关键词:自适应滤波; LMS算法; Matlab ;FIR LMS adaptive filter of the DSP to achieve Abstract The convergent speed and steady state error are affected by the fixed step size and can not be improved simultaneously in classical LMSalgorithm. Therefore, to use it correctly in relevant fields, for ...
Espí, “An easy demonstration of the optimum value of the adaptation constant in the LMS algorithm,” IEEE Trans. Educ., vol. 41, pp. 83, Feb. 1998. [11]. D. Morgan and S. Kratzer, “On a class of computationally efficient rapidly converging, generalized NLMS algorithms,” IEEE ...
Implementation of LMS Adaptive Equalizer Based on DSP Qin Wei (Shanxi Radio and Television Wireless Management Center, Shanxi 030001, China)Abstract In this paper, an adaptive equalizer based on LMS algorithm is realized by using TMS320VC5509A development board under time-varying channel environment....