The adoption of smart / adaptive antenna techniques in future wireless systems is expected to have a significant impact on the efficient use of the spectrum, the minimization of the cost of establishing new wireless networks, the optimization of service quality and realization of transparent operation across multi technology wireless networks [1]. This paper presents brief account on smart ante...

In a majority of currently deployed wireless communication systems, the objective is to sell a product.We describe standard cellular antennas, smart antennas using fixed beams, and adaptive. Wireless communication systems are limited in performance. SIGNALS AND SYSTEMS.The adoption of smart adaptive antenna techniques in future wireless systems is. The main impediments to high-performance wirel...

Multiple antenna technologies have received high attention in the last few decades for their capabilities to improve the overall system performance. Multiple-input multiple-output systems include a variety of techniques capable of not only increase the reliability of the communication but also impressively boost the channel capacity. In addition, smart antenna systems can increase the link qual...

Smart antenna is considered as one of the most effective means for enhancing wireless system capacity. When fractional loading is accompanied with slow-frequency hopping (SFH), soft capacity can be realized in time-division multiple access (TDMA) wireless networks. Then, the interference reduction due to smart antennas, power control, and discontinuous transmission can be directly translated in...

This paper offers a complete view about the smart antenna which is the vital part of wireless mobile communications. As we steadily march towards the world of wireless digital communication , smart antenna plays a key role in transmission and reception of digital data. Smart antenna significantly improves wireless system performance and economics for a range of potential users. This paper expla...

In this paper we investigate the impact of spatiotemporal channel models on the system-level capacity in the UMTS FDD uplink. We study the performance of spacetime processing for flat fading and COST 259 channel models. The results are expressed in terms of multiple-access noise rise, which is derived by a stationary system simulator. Smart-antennas provide a clear advantage in mixed rate traff...

The use of smart antennas in mobile radio communications cellular networks such as GSM network, to mitigate the fading effects and to increase the traffic capacity by exploiting the Spatial Division Multiple Access (SDMA) is actually of great interest. These intelligent antenna systems take advantages of both antenna and propagation technology. Smart antennas has the capability to reduce multip...

The technology and deployment of modern mobile communications systems, should adapt to the continuous and rapid growth of wireless data traffic. Besides the increase in bandwidth, the addition of cell sites and sectors, and the enhancement of air interface capabilities, smart antennas play also a substantial role in the improvement of wireless systems’ performance. When we refer to smart antenn...

In this thesis the possibilities of smart antenna systems in wireless mesh networks are examined. With respect to the individual smart antenna tradeoffs, a routing protocol (Modified HWMP, MHWMP) for IEEE 802.11s mesh networks is presented, that exploits the full range of benefits provided by smart antennas: MHWMP actively switches between the PHY-layer transmission/reception modes (multiplexin...

In recent years, high-speed wireless communication is in vogue. In wireless communication systems, multipath fading, delay and interferenc occurres by reflection or diffraction. In a high-speed wireless communication, it becomes a necessary to separate desired signal from delay or interference signal. Thus to overcome these problems Smart antenna systems have been developed. Basically there are...