REVIEW PAPER ON SMART ANTENNA SYSTEM IN DIFFERENT ASPECT OF WIRELESS NETWORK

Abstract

Smart Antenna system is the One of the most rapidly developing areas of communications. The use of smart antennas in mobile communications that enhances the capabilities of the mobile and cellular System such a faster bit rate, multi-use interference, space division multiplexing (SDMA), increase in range, multipath mitigation, and reduction of errors due to multi path fading and with one great advantage that is a very high security. The signal that is been transmitted by a smart antenna cannot be tracked or received by any other antenna, thus ensuring a very high security of the data transmitted. We study the required algorithms that are need for the beam forming in the antenna patters. Smart antenna systems have been long predicted to provide much better performance than existing antennas in terms of power consumption, user capacity and noise suppression these advantages are due to the antenna array and the performance of digital signal processing techniques used in the system. Direction-of-arrival (DOA) algorithm plays a crucial role in smart antenna system to ensure that the antenna array is able to estimate the direction of the incoming signal and thus, with the aid of adaptive beam forming, to point the array beam towards the estimated direction.