Direction of Arrival Estimation in Smart Antenna Using MUSIC and Improved MUSIC Algorithms at Noisy Environment

The performance of smart antenna in mobile network depends on the accuracy of determination of angle of arrival (AOA) or direction of arrival (DOA). In this paper, the performances of multiple signal classification (MUSIC) algorithm and improved MUSIC algorithm are used for DOA estimation. In improved MUSIC algorithm modification is done by the conjugate reconstruction of the data matrix of the MUSIC algorithm. From simulation results it is found that the improved MUSIC algorithm gives appropriate angular resolution with increasing number of antenna sensors compared to MUSIC algorithm in different noisy environment.