Due to lack of resources such as transmission power and bandwidth in satellite systems, resource allocation problem is a very important challenge. Nowadays, new heterogeneous network includes one or more satellites besides terrestrial infrastructure, so that it is considered that each satellite has multi-beam to increase capacity. This type of structure is suitable for a new generation of commu...

AbHrocLln this paper, the achievable perlormanre of D turbo coded system adapted to a block fading chamel model is evvplunted. Thir model is suitable far andyring, for instance, frequency-hopped multiple access (FHMA) syatemr that operate in a mobile satellite envlmnment eharacterind by frequency-nonselective slow Rkl ih fading, provided that the spacing bewren esrrlon Is larger than the cohere...

In this paper, we propose a unified and interactive mobile learning (M-Learning) model to help with expanding and spreading education in the Arab Homeland countries. The model utilizes a new competitive spot beam satellite communication technology, which enables efficient channel allocation, where communication channels can be allocated to specific and precise areas. The proposed model is refer...

In this paper, we describe how satellite communications may contribute to disaster management. During emergency situations, satellite communications present many advantages in supporting or replacing a terrestrial infrastructure (if any) subject to destruction or saturation. However, devising the right deployment model deserves close scrutiny in order to fit the responders’ needs and sustain fi...

An architecture for delivering interactive multimedia courseware to schools, known as the Distributed and Interactive Courseware Environment (DICE), 1 is being developed on a testbed consisting of (1) a network-resident architecture supported by a highspeed ATM WAN, (2) a classroom-resident architecture consisting of PC LANs in participating school classrooms, and (3) a satellite communications...

We have created a system that aims to facilitate prehospital assessment of remote and rural patients using remotely supported ultrasound (US) and a novel communications device. Paramedics can function as remotely supported US operators, guided and advised by hospital-based specialists regarding diagnosis and treatment options. Novel communication technology can link these users in areas with lo...