Cryptography is the most suitable technique to protect the access to subscribed value-added services for mobile applications provided through satellite broadcasting (e.g. localization and mobile TV). However, if a temporary loss of signal is experienced by receivers, not only the data streaming is compromised, but also the key management-related messages. Hence, when the signal is received agai...

• Both authors are with Alcatel Space, 26 avenue J.F. Champollion, 31037 Toulouse Cedex 1 France, email: [email protected], [email protected] Abstract This paper presents an overview of the Satellite Digital Multimedia Broadcasting (SDMB) system, as studied within the European IST integrated project MAESTRO. The SDMB takes advantage of the satellite inherent cap...

Geostationary satellite networks are currently considered as one of the most promising broadband access network technology for narrowing the digital divide. Though technically attractive and cost effective, the provisioning of endto-end QoS services in satellite access remains largely undefined. In order to bridge this gap, the European SATIP6 project defines a complete QoS architecture involvi...

Geostationary satellite networks are currently considered as one of the most promising broadband access network technology for narrowing the digital divide. Though technically attractive and cost effective, the provisioning of endto-end QoS services in satellite access remains largely undefined. In order to bridge this gap, the European SATIP6 project defines a complete QoS architecture involvi...

This paper presents an iterative decoding algorithm for concatenated codes consisting of a Reed-Solomon and a convolutional code, focusing on the code of the DVB-S standard. Existing solutions for the different decoding stages and their interfaces are discussed and their performance is compared. Besides, a new procedure is proposed to define the feedback signal from the output of the Reed-Solom...

Universal education is the dream of India and more so with the passing of 'Right to Education bill' in the country. Looking to the diverse culture and vividity in the country it is not possible to take education to the last mile in the country with prevailing chalk-blackboard technique. An attempt has been made to probe various digital video broadcast (DVB) techniques for spatial and temporal d...

Ki-Dong Lee et al. 211 This paper presents a dynamic resource allocation algorithm with multi-frequency time-division multiple access for the return link of interactive satellite multimedia networks such as digital video broadcasting return channel via satellite systems. The proposed timeslot assignment algorithm, called the very efficient dynamic timeslot assignment (VEDTA) algorithm, gives an...