DocumentCode :
2372554
Title :
Artificial immune system assisted Minimum Variance Distortionless Response beamforming technique for adaptive antenna system
Author :
Salem S, Balasem ; Tiong Sieh Kiong ; Paw, Johnny Koh Siaw ; Goh Chin Hock
Author_Institution :
Power Eng. Center, Univ. Tenaga Nasional, Kajang, Malaysia
fYear :
2013
fDate :
14-16 Oct. 2013
Firstpage :
938
Lastpage :
943
Abstract :
In wireless applications, the radiation pattern of adaptive antenna system is smartly formed and steered to cancel interfering signals (placing nulls) and produces a strong peak towards the desired signal according to the calculated weight vectors. This paper proposes an enhanced beamforming technique based on Minimum Variance Distortionless Response (MVDR). The Clonal selection algorithm (Clonalg) of Artificial Immune System (AIS) has been incorporated to assist MVDR to more precisely steer its beam towards desired user and forming deeper nulls at the interfering signals. The proposed algorithm has been simulated by using uniform linear antenna with multiple array elements, with 0.5λ spacing between adjacent elements and operated in the frequency of 2.3 GHz with 20 dB noise power level. Simulation results show that AIS assisted MVDR adaptive beamforming technique is able to produce much better received SINR in comparison of conventional MVDR.
Keywords :
UHF antennas; adaptive antenna arrays; antenna radiation patterns; array signal processing; artificial immune systems; interference suppression; linear antenna arrays; receiving antennas; vectors; AIS; Clonalg; MVDR; SINR; adaptive antenna system; adaptive beamforming technique; antenna radiation pattern; artificial immune system; clonal selection algorithm; frequency 2.3 GHz; interfering signal cancellation; minimum variance distortionless response; noise figure 20 dB; uniform linear antenna array element; weight vector calculation; wireless application; Adaptive Beam Forming; Artificial Immune System; Minimum Variance Distortionless Response;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
ICT Convergence (ICTC), 2013 International Conference on
Conference_Location :
Jeju
Type :
conf
DOI :
10.1109/ICTC.2013.6675523
Filename :
6675523
Link To Document :
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