Ganesh V.Karbhari,Prof.A.S.Deshpande
Smart Antenna is one of the recent technologies of communication. If we have accurate direction of arrival (DOA) and Beam forming algorithm, then Smart Antenna gives good quality of signals in wireless communication. There are various methods to find DOA. The MVDR method finds the DOA of signal, but due to spectral leakage locations are shown by spurious peaks. The classical beam former method also produces some spurious peaks. MUSIC algorithm gives higher accuracy and resolution than the other methods. If interval is coarser, MUSIC gives less accurate results. The GSU-MUSIC algorithm for DOA estimation of smart antenna is similar to MUSIC but iterative approach is used, based on GSU minimization to find accurate peaks. The GSU-MUSIC Algorithm successfully deals with the problems associated with previous methods used for DOA estimation of smart antenna.
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