Performance Study of Variable Step-size LMS Beam Forming Algorithm

The adaptive algorithm of smart antenna achieves the best weight vector for beam forming by iterative means,the convergence rate and steady state error directly influence the beam forming.The performance of the traditional LMS algorithm is analyzed.A new variable step-size algorithm is proposed and applied to beam forming with the Matlab.The simulation result indicates that the improved algorithm can achieve faster convergence and lower steady state error than the traditional LMS.