Recently, the radio frequency identification (RFID) technology has gained significant attention. One of the important performance issues in RFID systems is to resolve the collision among responses from RFID tags from the viewpoint of wireless media access control. We consider two kinds of smart antenna systems to enhance the RFID tag reading rate, namely the adaptive array antenna and the multi...

Smart antenna (or multi-beam antenna) systems can support simultaneous transmissions (or receptions) of multiple packets in different beams using the same channel. However, network performance is highly dependent on transmission scheduling. This study develops two transmission-scheduling schemes for use with smart antenna systems to improve network throughput and reduce transmission delay. The ...

In the recent years, ad-hoc network technologies have received much attention from the research community. Therefore, the evolution of these technologies is more rapid, but also results in more complex devices and mechanisms. Furthermore, smart antenna systems have recently become more attractive for utilization in ad-hoc networks, mainly because their cost has been decreasing steadily. This do...

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...

Performance improves in terms of coverage in the MC-CDMA & CDMA network with the help of simulation model and an evaluation method for the smart antenna system is presented. The EC/Io coverage area is presented with the proposed method that can show the impact of smart antenna system on the function of antenna type and beam width. The performance improvements are remarkable in the smart antenna...

Digital Enhanced Cordless Telecommunication (DECT) can be a latent solution for wireless local loop (WLL) based communication system planning. However DECT performs poorly in multipath propagation scenarios. To overcome the difficulties and utilize the advantages of DECT systems, smart antennas can be introduced. In this paper, the design and simulation of a smart antenna system for DECT radio ...

Smart antennasystems have received much attention in the last few years because they can increase system capacity by dynamically tuning out interference while focusing on the intended user. In this paper, we focused our research on the performance of two kinds of smart antenna receivers. An analytical model is proposed for evaluating the BER performance using a closed-form expression. Also, for...

Interference and multipath is one of the current issues in a wireless communication system, with complicated scenarios of environment especially in urban areas with a high number of users. Introducing smart antenna systems at the base station can contribute to reducing interference and improve quality of service. This paper proposes and explores the application of artificial immune system and n...

In this paper, the design and implementation of plasma antenna array with beam forming is discussed. The structure consists of a circular array of plasma tube enclosed in a unipolar UHF band monopole antenna. Beam forming is possible by stimulated plasma tubes. The combination of the above antenna with plasma excitation controller makes a beam forming smart antenna. An experimental model in UHF...