Angle of Arrival Estimation for Smart Antenna using variations in MUSIC algorithms

To enhance the performance of wireless system gain should be increased in the desired signal direction. To increase the gain in desired direction smart antenna system is used. Smart antenna system has capability to adjust its radiation pattern in the direction of required signal and nulls in the direction of undesired signals. Angle of arrival(AOA) estimation means determining the direction of an incoming incident signal from required direction. Smart Antennas are phased array antennas having smart signal processing algorithms for finding the AOA of the required signal, which in turn is used to calculate beam-forming vectors to form the radiation pattern in the direction of signal. This paper introduces a study & implementation of algorithms for DOA estimation which are Minimum Variance Distortionless Response (MVDR) and Multiple Signal Classification (MUSIC) in terms of distance between adjacent elements, number of elements and number of snapshots.