College of Engineering

Abstract : One of the most popular techniques now a day for data spreading is Direct Sequence Spread spectrum (DSSS). The data that is to be wireless ransmitted is multiplied with a high frequency pseudo-random noise (PN) sequence at the transmitter. The work in this thesis presents the design, simulation, implementation and testing of a direct sequence spread spectrum receiver. The receiver employs a Binary-Phase-Shift Keying (BPSK) signaling scheme.

Abstract: Pulse Width Modulation (PWM) is a very commonly used method in DC/AC conversion. Actually, any stream of pulses that have a high fundamental component can be assumed as PWM strategy. The most compatible technique of PWM for the use with variable speed control of induction motor is the Carrier Based PWM (CB-PWM). They are divided into two groups, Continuous PWM (CPWM) and Discontinuous PWM (DPWM). They all can be implemented using triangle intersection method and most of them can be implemented using direct digital method.

Abstract: The increasing demand to incorporate video into communications services and the continuous developments in telecommunication, create a demand for finding efficient ways for compression techniques. In this research, the interframe approach is designed and implemented by Visual Basic language 6.0 with H.263, where the H.263 is the most important compression standard for video over the Internet. Many techniques have been applied for motion estimation for video compression. The motion estimation process is the most significant factor in a video compression process.