Studies of Different Direction of Arrival (DOA) Estimation Algorithm for Smart Antenna in Wireless Communication
Dhusar Kumar Mondal · 2013
The present day wireless communication system demands notonly for capacity but also high quality of service and better coverage without increase in radio frequency spectrum allocated for specific application. Smart Antenna technology fulfill allthis system requirement very efficiently, serving different user by radiating narrow beam. Thus the same frequency can be reused even if the user are in the same cell or the user are well separated resulting system capacity improvement. There are two main function of smart antenna, including Direction of Arrival (DOA) estimation of user and beamforming towards the user. Successful design of smart antenna depends highly on the performance of DOA estimation algorithm as well as beamforming algorithm. A systematic comparison of the performance of different DOA algorithm like Barlett, Capon, MUSIC has been extensively studied by analyzing the simulation result with MATLAB. Further MUSIC is separately studied in details.