Abstract-Explosion in Internet applications has stimulated active research activities in expanding the capability of the current telecommunication networks. These activities include implementing faster electronics to process the higher data bit rates, or developing Wavelength Division Multiplexing (WDM) techniques, and novel optical networks components to increase the information carrying capac...

The introduction of smart phones and other smart gadgets, which offers ubiquitous internet access and other diverse multimedia applications, has lead to the explosive growth of mobile data. However, this also increases the energy consumptions and carbon footprint of the mobile communications industry. The recent advancement in green telecommunication networks explores energy saving through dyna...

This paper investigates the effect of several frequency modulation profiles on conducted-noise reduction in dc-dc converters with programmed switching controller. The converter is operated in variable frequency modulation regime. Twelve switching frequency modulation profiles have been studied. Some of the modulation data are prepared using MATLAB software, and others are generated online. More...

It is expected that users of telecommunication services such as Internet, Web browsing, and tele-education will increase dramatically. This has greatly increased the demand for high bandwidth and high capacity communication systems. Advances in electro-optic technologies have made optical communication a good networking choice for the increasing demands of high channel bandwidth and low communi...

Due to the nature of infinite dimensionality, the orbital angular momentum (OAM) has been considered as a new degree of freedom of light and widely expanded the scopes of substantial optical applications such as optical telecommunication, quantum information, particle manipulation and imaging. In recent years, the integrated photonic OAM emitters have been actively investigated due to both comp...

The evolution of software architecture, including operating systems and applications, spans from batch systems on big iron to today’s hand-held devices, and is now reaching into ubiquitous computing objects as evident in efforts such as JINI and Bluetooth. In digital telecommunication, the origins came from PCM and Ethernet, via OSI’s X.25 to fast packet-switching realized in Frame Relay and AT...

User-perceived application-level performance is very important in the adoption and success of UMTS (Universal Mobile Telecommunication System) services and infrastructure. To predict this performance, a detailed end-to-end UMTS network performance simulator was developed. The simulator allows the modeling of application traffic characteristics, network architecture, network elements, and protoc...