Special Edition. New Trends of Satellite Communications Services. 3. The Use of Communication Satellite by Broadcasting.

Secondary Terrestrial Use of Broadcasting Satellite Services below 3 Ghz

Secondary use of the satellite spectrum by a terrestrial system is studied in this paper, focusing on broadcasting satellite services. Both spectrum sensing based access and database based access are discussed. Link budget analysis is used to define operational limits for spectrum sensing and transmission power control when the primary system is a digital video broadcasting – satellite services...

Digital Video Broadcasting-Satellite to Handheld Services

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...

New NASA satellite - to - satellite communications take shape

On the Physical Layer for Satellite Multicasting/broadcasting Services

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...

examining the relationship between fear of negative evaluation and communication strategies by iranian efl learners

the purpose of the present study was to investigate the relationship between fear of negative evaluation (fne) and communication strategies (css) among iranian efl learners. it was aimed to examine the differences in the use of communication strategies between speakers with high or low degree of fear of negative evaluation. the current study was a case study consisting of 10 english learners at...