Mobility is considered a key technology of the next generation Internet and has been standardized within the IETF. Rapidly emerging multimedia group applications such as IPTV, MMORPGs and video conferencing increase the demand for mobile group communication, but a standard design of mobile multicast is still awaited. The traditional Internet approach of Any Source Multicast (ASM) routing remain...

If the direction of arrival (DOA) of a source is perturbed due to some reasons in a statistical way as in the environment of wireless mobile communications, a new model appropriate for such environment should be used instead of the point source model. In this paper, an angle-perturbed source model is proposed and an estimation method based on the eigen-decomposition technique is investigated un...

♣ This research is partially supported by EU IST project DBGlobe (IST2001-32645) under the FET Proactive Initiative on Global Computing for the co-operation of autonomous and mobile entities in dynamic environments. ∗Currently on leave from the Norwegian University of Science and Technology. Abstract The rapid advances in wireless communications technology and mobile computing have enabled pers...

If the direction of arrival (DOA) of a source is perturbed due to some reasons in a statistical way as in the environment of wireless mobile communications, a new model appropriate for such environment should be used instead of the point source model. In this paper, an angle-perturbed source model is proposed and an estimation method based on the eigendecomposition technique is investigated und...

In this paper, we propose a real-time transcoding system to generate contents for mobile networks with QoS provisioning. Video transcoding is widely used to change storage formats. However, as far as the authors know, it has not been proposed to generate real-time contents. Although the philosophy in this paper can be extended to alternative video sources (all major open TV channels are broadca...

The paper describes the implementation of a context aware location and time based system on a normal mobile phone, with a minimum of requirements (Bluetooth, Internet access, Java ME, and a simple webbrowser). We can answer the following queries based on data crawled from the web and enriched with location coordinates: • Where are my friends? • What movies are playing, right here, right now? • ...

Introduction: The continuous rapid growth of the telecommunications industry and common application of cell phones have raised debates on the human health risks associated with exposure to radio frequency fields due to these phones or their base stations and other sources such as radar, radio/television waves, and industrial and medical applications. This study aimed to invest...