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Modified Blind Beamforming Algorithm for Smart Antenna System

A. Bouacha, F. Debbat, F.T. Bendimerad

Telecommunications laboratory, Faculty of Engineering, Abou-Bekr Belkaïd University TLEMCEN, BP 230, Chetouane, 13000 Tlemcen, Algeria

Received January 20, 2008 

Intelligent antennas take advantage of both antenna and propagation technologies. They have the potential to reduce multipath interference, increase signal to noise ratio, and introduce frequency reuse within a confined environment. Several challenges remain however in the growth of intelligent antennas; one of these is the development of new beamforming algorithm for the best use of the received signal. This study focuses on the development and the application of a new simple matrix inversion normalized constant modulus algorithm (SMI-NCMA) for smart antennas. The SMI-NCMA which combines the individual good aspects of Sample Matrix Inversion (SMI) and the Normalized Constant Modulus algorithms (NCMA) is described. Simulation results show that less complexity SMI-NCMA improves the interference suppression and gain enhancement over classical NCMA, converges from the initial iteration and achieves BER (bite error rate) improvements for co-channel interference.


Announcement of editorial board. It became known to us that this paper is plagiarism. It is  essentially similar to another paper authored by Mohammad Tariqul Islam entitled “MI-NLMS adaptive beamforming algorithm for smart antenna system applications, which had been published in 2006 in Volume 7 (issue number 10) of the "Journal of Zhejiang University SCIENCE A", pp. 1709-1716. In fact 100 % of the text in professor Mohammad Tariqul Islam’s original contribution (including all the key equations) was reproduced without any form of autorisation in the paper authored by A. Bouacha, F. Debbat, F.T. Bendimerad. Unfortunatelly the paper-plagiarism was published in our journal because the "Journal of Zhejiang University SCIENCE A" was unknown to reviewer and members of editorial board. We present our apologies to Dr.  Mohammad Tariqul Islam and "Journal of Zhejiang University SCIENCE A" for this publication.