In this paper, the problem of estimating directions of arrival (DOAs) of multiple sources observed on the background of white noise by using MUtiple SIgnal Classification (MUSIC) algorithm is proposed. This demonstrates the systems user oriented steering abilities. Using this approach reduces the interference substantially and hence increases the capacity of the system. Smart antenna simulation...

Recently, there have been widely conducted researches on dual-band radio frequency identification (RFID) tag based on 13.56 MHz (HF) and 900 MHz (UHF). Most dual-band RFID tag has been implemented so that each antenna is separated in a different inlay sheet respectively, which makes the resulting smart card impractically thick, and the typical drawback of dual-band RFID tags incorporated in one...

We present a low-cost shaped beam synthesis method for semi-smart base station antennas. Compared with the conventional array synthesis for smart antenna applications, the proposed circular/conformal array shaped beam synthesis for semi-smart antenna has much lower system complexity and instrumentation implementation cost. This is because only few elements are involved and the circular array fa...

Smart antenna technology has the potential to significantly increase the efficient use of the spectrum in wireless communication applications in comparison to the existing methods in use. Through intelligent control of the transmission and reception of signals, capacity and coverage in mobile wireless networks can be significantly improved. Smart antenna is one of the most promising technologie...

Increasing spatial reuse of spectrum is fundamental to improving the capacity and usefulness of large wireless networks. Steerable and adaptive antennas facilitate reuse, and a number of MAC-layer protocols have been developed for them. Existing protocols, however, do not allow the MAC (or scheduling) process to fully consider the capabilities of antenna reconfiguration, or vice-versa. Without ...

Wireless Sensor Networks are increasingly being employed for monitoring and sensing in harsh environments such as factories and offshore platforms. This technology has the potential to offer measurements over larger and difficult to access areas, giving more up-to date and precise information to inform control and operational systems. Wireless sensor networks are ideal for the development of th...

Smart and directional antennas can be used to improve the throughput performance of wireless communications in ad hoc networks. This improvement consists basically of minimizing collision and increasing simultaneous communications. Directional antennas reduce potential collision zone since data packets are directionally transmitted. Smart antennas are more intelligent than directional antennas ...

A novel printed octagonal fractal microstrip antenna with semi-elliptical ground plane is presented for ultra wide band applications. The proposed antenna has a compact size of 20×20×1 mm³. The measured result of the antenna exhibits the ultra wide band characteristics from 2/9 to 14/2 GHz. In this paper, reducing antenna’s size by 35%, the same results were achieved, while small dimension frac...