The duals of finite impulse response filters constructed of binary matrix sequences are used to design an eight-channel transmultiplexer. The binary matrix sequences of analysis and synthesis filters are obtained from corresponding complementary sequences which satisfy the conditions for perfect reconstruction. The distortions of eight transmultiplexed images in the presence of channel noise ar...

Broadcasting has been proved to be an efficient means of disseminating data in wireless communication environments (such as Satellite, mobile phone networks; other typical broadcast networks are Videotext systems). Recent works provide strong evidence that correlationbased broadcast can significantly improve the average service time of broadcast systems. Most of the research on data broadcastin...

Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. Series Title BO Satellite delivery BR Recording for production, archival an...

dard 14496) defines a multimedia system for interoperable communication of complex scenes containing audio, video, synthetic audio, and graphics material. In part 1 of this two-part article we provide a comprehensive overview of the technical elements of the Moving Pictures Expert Group’s MPEG-4 multimedia system specification. In part 2 (in the next issue) we describe an application scenario b...

Satellite communications can provide fourth generation (4G) networks with large-scale coverage. However, their integration to 4G is challenging because satellite networks have not been designed with handover in mind. The setup of satellite links takes time, and so, handovers must be anticipated long before. This paper proposes a generic scheme based on the Institute of Electrical and Electronic...

The use of satellites to provide ubiquitous coverage and connectivity for densely deployed Internet Things (IoT) networks is expected be a reality in emerging 6G networks. Yet the low battery capacity IoT nodes constitutes problem their direct satellites, which are located at altitudes up 2000 km. In this article, we propose novel architecture involving reconfigurable intelligent surface (RIS) ...

  Background :People are increasingly interested in health news. As a mass media, the ‘Islamic Republic of Iran Broadcasting’ (IRIB) has the highest number of target audiences. In Iran, some people follow health news via health programs on satellites and other means of communication. However, all of these programs do not live up to the standards of scientific evidence. In this study, we examine...

This paper is a preliminary report which presents information filtering solutions designed within the scope of a collaboration between our laboratory and the company of broadcasting per satellite SES ASTRA. The latter have finalized a system sponsored by advertisement and supplying to users a high bandwidth access to hundreds of web sites for free. This project aims at highlighting the benefits...

The spectrum available in the exclusive Ka-bands has been shown to be insufficient to meet the demands of broadband access by satellite post 2020. This paper presents the work of the FP7 project CoRaSat in validating the use of the extra spectrum in the shared Ka bands for use by satellite. It is demonstrated that in the 17.3 to 17.7GHz band shared with Broadcasting Satellite Service (BSS) feed...

In this paper the forward link performance of a satellite based UMTS system designed for the delivery of multimedia broadcast multicast services is investigated for different physical layer parameter combinations in AWGN, Rice and multipath radio channels. Guidelines for the choice of these parameters are given as a trade-off between bit error rate and processing delay. Also, the effects of non...