Universiti Teknologi Malaysia Institutional Repository

AIS algorithm for smart antenna application in WLAN

Abdul Kadir, Evizal and Shamsuddin, Siti Mariyam and Abd. Rahman, Tharek and Abdul Rahim, Sharul Kamal and Supriyanto, Eko and Rosa, Sri Listia (2015) AIS algorithm for smart antenna application in WLAN. Journal of ICT Research and Applications, 8 (3). pp. 175-194. ISSN 2321-3558

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Official URL: http://dx.doi.org/10.5614/itbj.ict.res.appl.2015.8...


Increasing numbers of wireless local area networks (WLAN) replacing wired networks have an impact on wireless network systems, causing issues such as interference. The smart antenna system is a method to overcome interference issues in WLANs. This paper proposes an artificial immune system (AIS) for a switch beam smart antenna system. A directional antenna is introduced to aim the beam at the desired user. The antenna consists of 8 directional antennas, each of which covers 45 degrees, thus creating an omnidirectional configuration of which the beams cover 360 degrees. To control the beam switching, an inexpensive PIC 16F877 microchip was used. An AIS algorithm was implemented in the microcontroller, which uses the received radio signal strength of the mobile device as reference. This is compared for each of the eight beams, after which the AIS algorithm selects the strongest signal received by the system and the microcontroller will then lock to the desired beam. In the experiment a frequency of 2.4 GHz (ISM band) was used for transmitting and receiving. A test of the system was conducted in an outdoor environment. The results show that the switch beam smart antenna worked fine based on locating the mobile device

Item Type:Article
Uncontrolled Keywords:switch beam, WLAN
Subjects:R Medicine > R Medicine (General)
Divisions:Biosciences and Medical Engineering
ID Code:57719
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 04:07
Last Modified:01 Feb 2017 00:48

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