Results 71 to 80 of about 35,355 (308)
A DISTRIBUTION CONTROL UNIT FOR SATELLITE-SWITCHED COMMUNICATIONS
, 1972 International Telemetering Conference Proceedings / October 10-12, 1972 / International Hotel, Los Angeles, CaliforniaTraffic estimates for the next generation of commercial communications satellites strongly indicate the desirability of using highly ...
Cooperman, R., Dobyns, T.
core
, 2010 A novel design solution of a dual-linearly polarised Ku-band low-profile radiating element for low elevation angle coverage (down to 10° above horizon) is presented. Such an element is suitable for full-duplex Satellite Communications On-The-Move (SCOTM)
Yuanyuan Jiang +7 more
core +1 more source
Outage Analysis of Hybrid Satellite-Terrestrial Cooperative Network with Best Relay Selection [PDF]
, 2012 In this paper, we study the performance of a downlink hybrid satellite-terrestrial cooperative network. The decode-andforward scheme is used and a selection of the best relay terminal is implemented.
Benoit Escrig +5 more
core +1 more source
Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems
Advanced Electronic Materials, EarlyView.Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang +9 more
wiley +1 more source
GEODA-GRUA: Adaptive Multibeam Conformal Antenna for Satellites Communications
, 2011 The GEODA-GRUA is one conformal adaptive antenna array designed for satellite communications. Operating at 1.7 GHz with circular polarization, it is possible to track and communicate with several satellites at once being able to receive signals in full ...
Arias Campo, Marta +11 more
core +1 more source
Advanced Electronic Materials, EarlyView.Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley +1 more source
Station-Keeping Maneuver Simulation for the Koreasat Spacecraft Using Mission Analysis Software [PDF]
Journal of Astronomy and Space Sciences, 1995 A series of east/west and north/south station-keeping maneuvers were simulated for the KOREASAT spacecraft which has to be maintained within ±0°.05 at the nominal longitude of 116°E. Weekly and biweekly based station-keeping maneuver plannings were used,
Byoung-Sun Lee, Jong Won Eun
doaj
On the quality of VoIP with DCCP for satellite communications [PDF]
, 2012 We present experimental results for the performance of selected voice codecs using DCCP with CCID4 congestion control over a satellite link. We evaluate the performance of both constant and variable data rate speech codecs for a number of simultaneous ...
Emmanuel Lochin +5 more
core +1 more source
Recent Advances in Programmable Metasurfaces and Meta‐Devices
Advanced Electronic Materials, EarlyView.Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao +4 more
wiley +1 more source
Satellite-Communications: LMS_time_series_gen_GEO_v1_1
, 2015 <p>LMS time series generator for Ka-band using GEO satellite, based on “Rec. ITU-R P.618-12 - Propagation data and prediction methods required for the design of earth-space telecommunication systems.” International Telecommunication ...
Ferreira, Paulo (5302141) +3 more
core +1 more source