[IEEE 2013 Annual International Conference on Emerging Research Areas (AICERA) - 2013 International Conference on Microelectronics, Communications and Renewable Energy (ICMiCR) - Kanjirapally, India (2013.06.4-2013.06.6)] 2013 Annual International Conference on Emerging Research Areas and 2013 International Conference on Microelectronics, Communications and Renewable Energy - Interference nulling and side lobe minimization using space selective digital filter and implementation using digital signal processor