www.tjprc.org editor@tjprc.org International Journal of Electrical and Electronics Engineering Research (IJEEER) ISSN(P): 2250-155X; ISSN(E): 2278-943X Vol. 4, Issue 2, Apr 2014, 141-144 © TJPRC Pvt. Ltd. IMPROVED PERFORMANCE OF MC-CDMA USING SMART ANTENNA TECHNIQUE VIJAY PATIL 1 & R. D. PATANE 2 1 M.E Student, EXTC, ARMIET College of Engineering, Mumbai University, Mumbai, Maharashtra, India 2 Associate Professor, Department of Electronics, Terna Engineering College, Mumbai, Maharashtra, India ABSTRACT To improve coverage and performance in the MC-CDMA network with the help of simulation model and an evaluation method for the smart antenna system is presented. The proposed method that can show the impact of smart antenna system on the Ec/Io coverage area is also presented as function of antenna type and beam width. The performance improvements are remarkable in the smart antenna systems. Here the data service users as well as the voice services users are considered. The performance of the system is evaluated in terms of Ec/Io Difference. We can observe the throughput with Number of users per sector. Results are discussed based on various parameters like flat urban type morphology, Okumura Model for omni directional antennas air link, orthogonality factor and antenna beam width. It also reduces multipath fading, cochannel interferences, system complexity &cost, BER, and outage probability. KEYWORDS: Spatial Multiplexing, Multipath Fading, Adaptive Array, Channel Estimation, Throughput, Beam Width INTRODUCTION The recent 3rd generation mobile radio communication systems are proposed to provide high speed multimedia data services as well as voice services, this motivates to reduce interference from other users to increase capacity of mobile radio communication systems the new technique are also used to increase the radio frequency spectrum .The smart antenna techniques are one of those techniques that can achieve these goals. An application of antenna arrays has been suggested in recent years for mobile communication systems to overcome the problem of limited channel bandwidth, thereby satisfying an ever growing demand for a large number of mobiles on communication channels. When an array is appropriately used in mobile communications system, it helps in improving the system performance by increasing channel capacity and spectrum efficiency, extending range coverage, tailoring beam shape, steering multiple beams to track may mobiles, and compensating aperture distortion electronically. It also reduces multipath fading, co channel interferences, system complexity & cost, BER, and outage probability. It has been argued that adaptive antennas and the algorithms to control them are vital to a high-capacity communications system development. SMART ANTENNA SYSTEMS A Need for Smart Antennas Wireless networks face ever-changing demands on their spectrum and infrastructure resources. Increased minutes of use, capacity-intensive data applications and the steady growth of worldwide wireless subscribers mean carriers will have to find effective ways to accommodate increased wireless traffic in their networks. However, deploying new cell site is not the most economical or efficient means of increasing capacity. Wireless carriers have begun to explore new ways to maximize the spectral efficiency of their networks and