Abstract
Smart antenna system after determination of Direction of Arrival (DOA) of signal, generates beam toward user and null toward interferer and enhances the security and capacity in mobile network. The objective of the present work is to determine weaker coherent and non-coherent signals with low Signal-to-Ratio (SNR) in heavily faded areas, where performances of other conventional algorithms are not good. For the determination of weaker signal accurately, a combined method using Blind Source Separation (BSS) based Joint Approximation Diagonalisation of Eigen matrices (JADE) and Multiple Signal Classification (MUSIC) algorithm is used. From simulated results, it is found that the resolution of MUSIC algorithm can be enhanced using this combined method. Also the capability of detection of angle of incoming signal can be enhanced using this proposed method. Since, smart antenna system is one of the main technologies in fourth generation mobile communication and beyond, the proposed method may be useful for next generation mobile communication.
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