Performance Analysis of Direction of Arrival Estimation Algorithms for Smart Antenna for Mobile Communication Systems

Mobile communication networks face ever-increasing demands on their spectrum and infrastructure resources. Increased minutes of use, capacity-intensive data applications and the steady growth of worldwide mobile subscribers means that carriers will have to find effective ways to accommodate increased wireless traffic in their networks. Thus, the smart antennas system becomes capable to locate and track signals by the both: users and interferers and dynamically adapts the antenna pattern to enhance the reception in Signal-Of-Interest direction and minimizing interference in Signal-Of-Not-Interest direction. Hence, Space Division Multiple Access system, which uses smart antennas, is widely used in mobile communication systems, because it shows improvement in channel capacity and co-channel interference. But on the other hand the performance stability of smart antenna system greatly depends on efficiency of Direction of Arrival (DOA), which is used to estimate the angle of arrival of the number of incidents plane waves on the antenna array. This paper shows an effort on the study of performance analysis of DOA estimation AlgorithmsMUSIC and ESPRIT for Adaptive Array Smart Antenna for Mobile Communication on different performance parameters such as number of elements, number of snap shots, noise mean, noise variance and spacing between elements. Index TermSmart Antenna, DOA, ESPRIT, MUSIC.