College of Engineering

Abstract: Exponential growth of mobile communications, radio links and wireless networks has increased interest in many topics in radio propagation. Much effort is now devoted to refine radio propagation path-loss models for urban, suburban, and other environments together with substantiation by field data. The objective for the system designer is to provide sufficient clearance of the obstacle without appreciable transmission loss due to the obstacle. The degree of intersection between the obstacle and the first Fresnel zone gives a good measure of obstruction loss.

Abstract: In an attempt to keep flexibility of a programmable solution and the efficiency of dedicated solution, Field Programmable Gate Arrays (FPGAs) are beginning to emerge as a viable option. In this view, FPGAs are an attractive option for implementing digital communication systems for reasons of performance, power consumption, and reconfigurability. This work examines techniques for developing, modeling and generating FPGA implementation of QPSK modem. Amongst the more complex and demanding tasks performed in high data rate wireless communication system is synchronization.

Abstract: Smart antennas systems (SAS’s) have gained a lot of interest due to the explosive growth in demand for mobile communications in the last few years to overcome practical challenges in providing the service. The main benefit of the SAS technology lies in its ability to exploit the spatial domain, on top of the temporal and frequency domains, to improve the transceiver performance. Uniform Circular Arrays (UCA’s) are of interest because of their natural ability to provide a full azimuth (i.e.