With the exponentially increasing demand for wireless communications the capacity of current cellular systems will soon become incapable of handling the growing traffic. Since radio frequencies are diminishing natural resources, there seems to be a fundamental barrier to further capacity increase. The solution can be found in smart antenna systems. Smart or adaptive antenna arrays consist of an...

In this paper, smart antennas are antenna array use to empathize spatial signal such as DOA of the signal and used to find beamforming vectors and locate the antenna ray in the desired direction of target. Beam formed adaptive algorithms allow the antenna to steer the beam in desired direction of interest while cancelling the obtrusive signals. The prompt growth of smart antenna makes use of di...

The goal of this paper is to give a brief overview on smart antennas, before analyzing some popular algorithms from this domain in MATLAB and providing simulation results(especially a parametric study of the algorithms), in order to enhance understanding of the possibilities, but also the limitations of these algorithms. The main focus is on Direction of Arrival (DOA) algorithm called beamformi...

In this paper, smart antennas are antenna array use to empathize spatial signal such as DOA of the signal and used to find beamforming vectors and locate the antenna ray in the desired direction of target. Beam formed adaptive algorithms allow the antenna to steer the beam in desired direction of interest while cancelling the obtrusive signals. The prompt growth of smart antenna makes use of di...

The paper introduces two newly developed smart antennas, ESPAR antenna and ESMB antenna, for mobile wireless computing terminals and mobile stations. The configurations of these smart mobile terminal antennas at the operating frequency approximately over 2.4GHz are illustrated and the applications of using these smart antennas at mobile computing terminals and mobile stations are proposed. The ...

Mobile Ad hoc Networks (MANETs) have drawn considerable attentions of the researchers for the last few years. MANETs, consisting of mobile nodes, are self-organizing and self-configuring and hence can be deployed without any infrastructure support. MANETs also have some limitations including short-life, unreliability, scalability, latency, high interference, and limited resources. In order to o...

Fault diagnosis in antenna arrays implies locating the faulty or defective elements in the array. Smart antenna arrays use digital beamforming and allow for array failure corrections. The defective elements of such antenna arrays therefore need not be replaced unlike the traditional analog approach. The smart antennas can thus support cost-effective solutions instead of replacing the hardware. ...

The use of smart antennas in wireless ad-hoc networks has garnered significant attention over the last few years. Given the unique capabilities of smart antennas, and how they can improve performance in a typically constrained ad-hoc network environment, the attention is with merit. However, not much light has been shed on wireless ad-hoc networks that have nodes with varying antenna capabiliti...

This paper presents practical design of a smart antenna system based on direction-of-arrival estimation and adaptive beam forming. Direction-of-arrival (DOA) estimation is based on the MUSIC algorithm for identifying the directions of the source signals incident on the sensor array comprising the smart antenna system. Adaptive beam forming is achieved using the LMS algorithm for directing the m...

Demands for increased capacity and better quality of service are driving the development of new wireless technologies such as “smart” antenna arrays. The FPGAs operate as powerful digital signal processing devices, which can meet the requirements of adaptive antenna arrays. The smart antenna systems are efficient than the existing 3G antenna systems as they can track the location of a mobile us...