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Wireless Personal Communications
Published in: Wireless Personal Communications 4/2023

16-10-2022

Improved VSS-NLMS Adaptive Beamformer Using Modified Antenna Array

Authors: Veerendra Dakulagi, Rohini Dakulagi, Kim Ho Yeap, Humaira Nisar

Published in: Wireless Personal Communications | Issue 4/2023

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Abstract

Recently, smart antenna systems (SAS) have emerged as frontiers for the wireless communication industries. The least mean square (LMS) algorithm and its different forms are the most widely used techniques for adaptive beamforming. Nonetheless, these methods deteriorate for adaptive beamforming due to fixed step size. The variable step size normalized LMS (VSSNLMS) is one of the most efficient methods presented in the literature to overcome the limitation of the LMS and its variants. Nonetheless, this method exploits the uniform linear array (ULA) which does not provide uniform adaptive beamforming. In this work, we improve the performance of the VSSNLMS by using the modified ULA. Furthermore, to make it more suitable for practical application, we deploy the hamming window to the proposed method to significantly suppress the sidelobe level. The array signal model and the computer simulations are presented to prove the effectiveness of the new method.
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Metadata
Title
Improved VSS-NLMS Adaptive Beamformer Using Modified Antenna Array
Authors
Veerendra Dakulagi
Rohini Dakulagi
Kim Ho Yeap
Humaira Nisar
Publication date
16-10-2022
Publisher
Springer US
Published in
Wireless Personal Communications / Issue 4/2023
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-022-10068-7

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