The 21-GHz satellite broadcasting enables to transmit high-capacity information such as ultrahigh-definition TV, 3D-TV and so on. However, the 21.4 to 22.0-GHz band suffers from considerable rain attenuation. In order to compensate it, the studies about a rain fade mitigation techniques have been done. One of the techniques proposed by NHK Science and Technical Research Laboratories is an adapt...

Orthogonal Frequency Division Multiplexing (OFDM) has become increasingly popular due to its potential applications in digital audio broadcasting, digital terrestrial TV broadcasting, and satellite communication. A notable drawback of OFDM systems is their sensitivity to nonlinear distortion. For maximum power efficiency, amplifiers and transmitters of modern communication systems often operate...

the dedicated satellite mission goce will sense various small mass variations along its path around the earth. here we study the effect of the earth’s topography and atmosphere on goce data. the effects depend on the magnitude of topographic height, and they will therefore vary by region. as the effect of the atmosphere and topography must be removed from the total gravity anomaly prior to geoi...

This article presents a new study on the feasibility of operating direct broadcasting satellite (DBS) system under effect both precipitation and interference from fixed service (FS) at K-band in semiarid region. The carrier-to-noise plus ratio (CNIR) as protection criterion has been adopted to make sure that receiver DBS operates with an acceptable performance rainfall FS. Various measured data...

This paper presents the DVB-S satellite network infrastructure that achieves the broadcast of cultural events in real time through a satellite network, in the Hellenic area. In addition, the realization and usage of such a satellite network infrastructure is described, as well as how the interconnection of remote parts within the country is feasible. Hence, this paper distinguishes not only the...

This paper investigates the design of power and spectrally efficient coded modulations based on amplitude phase shift keying (APSK) modulation with application to satellite broadband communications. APSK represents an attractive modulation format for digital transmission over nonlinear satellite channels due to its power and spectral efficiency combined with its inherent robustness against nonl...

Satellite communication is well known in providing best services where broadcasting is essential, where terrain is hostile and very sparsely populated. It also has niche where rapid deployment is very critical and important. In Global Network Infrastructure satellite is considered as an inseparable component of the communication infrastructure. A variety of research work has been explored and p...