A countermeasure for round trip delay which occurs in between satellite and ground with network accelerator is investigated together with operating system dependency on effectiveness of accelerator. Also disaster relief data transmission experiments are conducted for mitigation of disaster together with acceleration of disaster related data transmission between local government and disaster pre...

The move to digital is a natural progression taking place in all aspects of broadcast media applications from document processing in newspapers to video processing in television distribution. This is no less true for audio broadcasting which has taken a unique development path in the United States. This path has been heavily influenced by a combination of regulatory and migratory requirements s...

Broadcasting protocols are proved to be efficient for transmitting most of the popular videos in video-on-demand systems. We propose a generalized analytical approach to evaluate the efficiency of the broadcasting protocols and derive the theoretical lower bandwidth requirement bound for any periodic broadcasting protocols. By means of the proposed analytical tool temporal-bandwidth map, the ap...

Digital Video Broadcasting Next Generation Handheld (DVB-NGH) is a hybrid terrestrial-satellite standard conceived to facilitate rich media content consumption using a variety of mobile, handheld devices. Still under drafting, the DVB-NGH specifications are to be released current 2012 with the target of offering superior performance, robustness and coverage with respect to existing solutions. T...

Emulation is a cost effective and efficient tool to perform performances evaluation and innovative access and network techniques validation. Its ability to interconnect real equipments with real applications provides excellent demonstrations means. The main problem is to overcome the emulation weakness which is the accuracy of the model reproducing the systems to be evaluated. Owing to its modu...

The Eureka-147 system is based on a programme multiplex which carries a combination of many separate services, each at a variety of bit-rates. However, given the international flavour of satellite broadcasting, it is likely that these services would originate from widely separated locations and this creates the problem of how the various data streams can be brought together into a single DAB mu...

We introduce a newsgathering system that features high mobility and wide-area coverage: Mobile Broadcasting Video (MBV) system. According to the original design concept, this system’s transmission channels provide increased mobility and wide area coverage, utilizing wireless LAN and low-orbit satellite technology. Also this system provides audiovisual quality that is comparable to current digit...