Title: A novel algorithm for adaptive NLMS beamformer

Authors: P.R. Mini; S. Mridula; Binu Paul; P. Mohanan

Addresses: Department of Electronics and Communication Engineering, Federal Institute of Science and Technology, Kerala, India ' Division of Electronics Engineering, School of Engineering, Cochin University of Science and Technology, Kerala, India ' Division of Electronics Engineering, School of Engineering, Cochin University of Science and Technology, Kerala, India ' Department of Electronics, Cochin University of Science and Technology, Kerala, India

Abstract: 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.

Keywords: beamforming; array; normalised least mean squares; NLMS beamformer; mapped real transform; 1D reduced mapped real transform; Rayleigh channels; Rician channels; scatter plot; convergence rate; computational complexity; simulation.

DOI: 10.1504/IJWMC.2016.076166

International Journal of Wireless and Mobile Computing, 2016 Vol.10 No.2, pp.122 - 129

Received: 13 Mar 2015
Accepted: 26 Nov 2015

Published online: 27 Apr 2016 *

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