Since mobile devices are battery powered, several mobile TV standards dictate using energy saving schemes to increase the viewing time on mobile devices. The most common scheme for saving energy is to make the base station broadcast the video data of a TV channel in bursts with a bit rate much higher than the encoding rate of the video stream, which enables mobile devices to turn off their radi...

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...

Cognitive radio is a technology that is of growing interest internationally. Currently, there is a highly active worldwide community of academic and industrial researchers working in this field. Efforts focus on the many technical questions as well as the economic and political challenges of moving this new technology from research concept to reality [1, 2]. Cognitive radio holds much promise n...

The next generation surveillance and multimedia systems will become increasingly deployed as wireless sensor networks in order to monitor parks, public places and for business usage. The convergence of data and telecommunication over IP-based networks has paved the way for wireless networks. Functions are becoming more intertwined by the compelling force of innovation and technology. For exampl...

Peer-to-peer (P2P) networks have become popular as a new paradigm for information exchange and are being used in many applications such as file sharing, distributed computing, video conference, VoIP, radio and TV broadcasting. This popularity comes with security implications and vulnerabilities that need to be addressed. Especially, due to direct communication between two end nodes in P2P netwo...