INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & MANAGEMENT SMART ANTENNA DESIGN FOR WIRELESS COMMUNICATION USING ADAPTIVE BEAM-FORMING APPROACH
Giriraj Kumar Prajapati · 2012
Smart antenna is recognized as promising technologi es for higher user capacity in 3G wireless networks by effectively reducing multipath and co-channel inter ference. Advent of powerful, low-cost, digital proc essing components and the development of software-based techniques has made smart antenna systems a practical reality for both base station and mobile station of a cellular communications systems in the next gene ration. The core of smart antenna is the selection of smart alg orithms in adaptive array. Using beam forming algor ithms the weight of antenna arrays can be adjusted to form ce rtain amount of adaptive beam to track correspondin g users automatically and at the same time to minimize inte rference arising from other users by introducing nu lls in their directions. Thus interferences can be suppres sed and the desired signals can be extracted. This research work provides description, comparative analysis and utility of various reference signal based algorith ms as well as blind adaptive algorithms. Exhaustive simulation study of beam patterns and learning characteristic s have proved the efficacies of the proposed work from app lication point of view.