A novel algorithm for adaptive NLMS beamformer

This paper proposes a novel algorithm based on Mapped Real Transform for improving the convergence rate and reducing the computational complexity of Normalised Least Mean Square beamformer. Simulation results using the proposed One Dimensional Reduced Mapped Real Transform algorithm project an improvement over the conventional Normalised Least Mean Square beamformer by exhibiting a reduction in computational complexity and computation time with the added advantage of faster convergence. The proposed One Dimensional Reduced Mapped Real Transform algorithm based Normalised Least Mean Square beamformer also exhibits an improved performance in terms of faster convergence and reduced scattering when used with Rayleigh and Rician channels.

[1]  Voicu Groza,et al.  Wideband adaptive LMS beamforming using QMF subband decomposition for sonar , 2013, 2013 IEEE 8th International Symposium on Applied Computational Intelligence and Informatics (SACI).

[2]  Hongbing Li,et al.  A New VSS-LMS Adaptive Filtering Algorithm and Its Application in Adaptive Noise Jamming Cancellation System , 2009, 2009 IEEE Circuits and Systems International Conference on Testing and Diagnosis.

[3]  K. Meenakshy,et al.  TEXTURE DESCRIPTORS BASED ON 1-D MRT , 2009 .

[4]  R Dr.Gopikakumari,et al.  Development of a New Transform:MRT , 2009 .

[5]  Ali H. Sayed,et al.  Variable step-size NLMS and affine projection algorithms , 2004, IEEE Signal Processing Letters.

[6]  Yong Shang,et al.  A Novel Linear Beamforming Algorithm , 2007 .

[7]  S. Hossain,et al.  Adaptive beamforming algorithms for smart antenna systems , 2008, 2008 International Conference on Control, Automation and Systems.

[8]  Junghsi Lee,et al.  A New Variable Step-Size NLMS Algorithm and Its Performance Analysis , 2012, IEEE Transactions on Signal Processing.

[9]  T. Mohammad,et al.  MI-NLMS adaptive beamforming algorithm for smart antenna system applications , 2006 .

[10]  Yaan Li,et al.  Research on the algorithms of robust adaptive beamforming , 2010, 2010 IEEE International Conference on Mechatronics and Automation.

[11]  Jing Dai,et al.  NLMS Adaptive Algorithm Implement Based on FPGA , 2010, 2010 Third International Conference on Intelligent Networks and Intelligent Systems.

[12]  T. Shimamura,et al.  Convergence evaluation of variable step-size NLMS algorithm in adaptive channel equalization , 2009, 2009 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT).

[13]  Marina Topa,et al.  Behavior of variable step size NLMS algorithms for acoustic echo cancellation , 2011, ISSCS 2011 - International Symposium on Signals, Circuits and Systems.

[14]  Man Zhihong,et al.  Modified LMS and NLMS Algorithms with a New Variable Step Size , 2006, 2006 9th International Conference on Control, Automation, Robotics and Vision.