Power control in cellular systems is applied to numerous communication architectures. For Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) power control reduces intercell interference and improves capacity. For Code Division Multiple Access (CDMA) power control is a required part of the base station and mobile station designs. Power Control reduces interference...

We investigate power consumption of a mobile station with the power saving class of type 1 in the IEEE 802.16e. We deal with stochastic behavior of mobile station during not only sleep mode period but also awake mode period with both downlink and uplink traffics. Our methods for investigating the power saving class of type 1 are to construct the embedded Markov chain and the semi-Markov chain g...

Micro-hydro-electric power is both an efficient and reliable formof clean source of renewable energy. It can be an excellent method of harnessing renewable energy from small rivers and streams. The micro-hydro project designed to be a run -of-river type, because it requires very little or no reservoir in order to power the turbine. The water will run straight through the turbine and back into t...

-The integration of Soft Computing techniques in traditional real-time systems is a promising approach to cope with the growing complexity of real-world applications. A power station is a complicated multivariable controlled plant, which consists of boiler, turbine, generator, power network and loads. The demands being placed on Control & Instrumentation engineers include economic optimization,...

Power generation today is an increasingly demanding task, worldwide, because of emphasis on efficient ways of generation. A power station is a complicated multivariable controlled plant, which consists of boiler, turbine, generator, power network and loads. The power sector sustainability depends on innovative technology and practices in maintaining unit performance, operation, flexibility and ...

This paper describes the optimization of maintenance workforce scheduling at Afam power station in Nigeria. The objective is to determine the optimum schedule to satisfy growing maintenance labour requirements with minimum cost and highest efficiency. Three alternative maintenance workforce schedules are compared. The first alternative is to continue with the traditional five-day workweek sched...

Mobile communication is more vulnerable to security attacks such as interception and unauthorized access than xed network communication. To overcome these problems, many protocols have been proposed to provide a secure channel between a mobile station and a base station. However, the public-key based protocols are not fully utilized due to the poor computing power and the small battery capacity...

Standing on the south bank of Thames, today, its chimneys reconstructed, brickwork restored, roof replaced, Battersea Power Station betrays few troubles that plagued development and redevelopment (Figure 1). Like many London’s power stations, began as two separate units: A, western wing, opened in 1933, B, eastern 1955. Unlike these other however, which ‘B’ building formed an ad hoc response to...