Feasibility verification of direct spectrum division transmission over multiple satellite transponder

Gigahertz Satellite Transponder

Simulation and Validation of Spread Spectrum Technique in In- Orbit Testing of the Satellite Transponder

-In order to evaluate the integrity of a satellite transponder, it is necessary to measure its characteristics (i.e. frequency response) and the characteristics of its high power amplifier (HPA), such as sensitivity and saturated output power. Since these properties are subject to aging and the satellite itself suffers from the vibration shocks during launch hence performance of these component...

Triangulaizability of Algebras Over Division Rings

Video transmission over mobile satellite systems

Mobile satellite communication channels are characterized by long transmission delays, variation of these delays, high bit-error-rates, shadowing and the multipath e!ect which severely reduce the quality of video services. Error control techniques including feedback mechanisms, error concealment methods, forward error correction techniques and error resilience schemes are examined in this paper...

Video image transmission over mobile satellite channels

This paper addresses the transmission of low bit-rate video image sequences through mobile satellite channels to provide portable communications services to remote areas. The particularly challenging aspects of this transmission channel include (1) rapid fading and log-normal shadowing, (2) low signal-to-noise ratio (SNR) due to the noise-limited channel, (3) the satellite's geostationary orbit...