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This paper presents the Doppler Power spectrum density (PSD) of a cellular mobile channel when directional antennas are deployed at both ends of the radio link. A macrocellular environment is modeled by assuming Gaussian and uniform scatter density around mobile station. The statistics of angle of arrival are used to explain the Doppler power density spectrum for macrocellular environment. Results...
A synthesis of parameter estimation based fault diagnosis scheme for uncertain nonlinear systems using higher order sliding modes is presented. The uncertain parameters of nonlinear system are estimated using an uncertainty estimator or observer. The estimated parameters carry information about system and actuator faults. A fault signal representing the dynamics of the fault is reconstructed using...
This paper presents the derivation of the probability density function (PDF) of angle of arrival (AoA) of multipaths at base station (BS) and mobile station (MS) while directional antennas are used at both ends of the communication link. A macrocell environment is modeled by assuming uniform and Gaussian distribution of scatterers around MS. Closed form expressions for PDF of AoA at BS and MS are...
Aspect-oriented programming is providing a new way of handling cross-cutting concerns (also known as aspects) in a modularized way. A number of languages, such as AspectJ, Spring, and AspectWorkz, have been developed to weave modularized aspects with the base program. Similarly a lot of research has been conducted to improve the composition of aspect models with the primary model. Although these suggested...
In this paper, a low ripple voltage multiplier (VM) for X-ray power supply is proposed. It consists of three single-phase symmetrical voltage multipliers, which are connected in series at their smoothing columns like string of batteries and are driven by three-phase ac power source. The smoothing column of each voltage multiplier is charged twice every cycle independently by respective oscillating...
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