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Enhancing mobile services with DVB-S2X superframing

N. Mazzali, S. Boumard, J. Kinnunen, B. Shankar M. R., M. Kiviranta, N. Alagha
2018 International Journal of Satellite Communications And Networking  
A special attention in the design phase of the system is given to the main impairments affecting satellite mobile communications, namely the nonlinear distortion introduced by the satellite transponder  ...  well as the system flexibility and complexity.  ...  Opinions, interpretations, recommendations and conclusions presented in this paper are those of the authors and are not necessarily endorsed by the European Space Agency.  ... 
doi:10.1002/sat.1255 fatcat:2vxgyv2iejcvbchls5bluujuhi

EXPERIMENTAL INVESTIGATION OF UWB SIGNAL INTERFERENCE EFFECT BETWEEN UWB COMMUNICATION DEVICE AND VSAT

Azizi Mohd Ali, Raja Syamsul Azmir Raja Abdullah, Shaiful Jahari Hashim, Mohd Fadlee A. Rasid, Aduwati Sali, Alyani Ismail, Fazirulhisyam Hashim
2019 Jurnal Teknologi  
It is expected that IoT devices based on UWB technology increases in the future and can become unattended jammer to other services.  ...  The level of interference is evaluated based on the measured bit error rate (BER), round trip time (RTT) and carrier over noise ratio (C/N).  ...  Acknowledgement This study was supported by the grant from Malaysian Communications and Multimedia Commission.  ... 
doi:10.11113/jt.v82.13866 fatcat:ziycioqu3nevzp7msoexcqifvi

EHF for Satellite Communications: The New Broadband Frontier

Ernestina Cianca, Tommaso Rossi, Asher Yahalom, Yosef Pinhasi, John Farserotu, Claudio Sacchi
2011 Proceedings of the IEEE  
The proposed analysis highlighted the need for a reliable propagation model based on experimental data acquired in orbit.  ...  Challenges and open issues are adequately considered together with some viable solutions and future developments.  ...  Phase-noise Phase-noise is an unwanted phase modulation of a signal and can be viewed as spurious sidebands on a wanted carrier.  ... 
doi:10.1109/jproc.2011.2158765 fatcat:5qb2hfeahnaevpumeyqlp3ls2q

Next-generation multiservice VSAT networks

M.H. Hadjitheodosiou, F.P. Coakley, B.G. Evans
1997 Electronics & communication engineering journal  
Careful consideration of these limitations is required in designing a system that could guarantee a particular Quality of Service.  ...  It is shown that it could be possible to use VSATs for ATM service provision, but there are limitations on the system's performance from the satellite delay and limited link capacity.  ...  This project's title was "Integrated Service VSAT Satellite Access Protocols" and its grant reference number was [GR/ G/ 59387]  ... 
doi:10.1049/ecej:19970305 fatcat:vx6j3drshjad7ijqnimgirzn3y

Experimental Missions in W-Band: A Small LEO Satellite Approach

M. Lucente, T. Rossi, A. Jebril, M. Ruggieri, S. Pulitano, A. Iera, A. Molinaro, C. Sacchi, L. Zuliani
2008 IEEE Systems Journal  
.: signal propagation issues, RF impairments, choice of modulation and coding, efficient antenna design, etc.  ...  The paper is focused on the research work carried out in a preliminary phase of IKNOW study and will consider also a number of elements related to the mission configuration, payload architecture, link  ...  ACKNOWLEDGEMENTS Authors wish to thanks Giorgio Perrotta of IMT S.r.l. and dr. Mirko Albani, dr. Giuseppe Codispoti of Italian Space Agency (ASI) for their useful review and suggestions.  ... 
doi:10.1109/jsyst.2007.914787 fatcat:36rtj67rd5bqffleb7ige4xaum

A Survey of Congestion Control Techniques and Data Link Protocols in Satellite Networks [article]

Sonia Fahmy, Raj Jain, Fang Lu, Shivkumar Kalyanaraman
1998 arXiv   pre-print
The long propagation delay of the earth-satellite link further imposes severe demands and constraints on the congestion control schemes, as well as the media access control techniques and retransmission  ...  Satellite communication systems are the means of realizing a global broadband integrated services digital network.  ...  The impact of the long propagation delay of satellite links on the ARQ mechanism has been extensively examined.  ... 
arXiv:cs/9809076v1 fatcat:ejo6hzxhxvbchcnfmd7rhsdyd4

A hybrid beamforming design for massive MIMO LEO satellite communications [article]

Joan Palacios, Nuria Gonzalez-Prelcic, Carlos Mosquera, Takayuki Shimizu, Chang-Heng Wang
2021 arXiv   pre-print
5G and future cellular networks intend to incorporate low earth orbit (LEO) satellite communication systems (SatCom) to solve the coverage and availability problems that cannot be addressed by satellite-based  ...  To this aim, we design and simulate the downlink of a LEO SatCom compatible with 5G NR, with a special focus on the design of the beamforming codebook at the satellite side.  ...  We neglect the impact of the atmospheric fading on the link budget.  ... 
arXiv:2104.11158v1 fatcat:ic7uiz73dvfzla5tuto4nxyo6a

On the Use of AI for Satellite Communications

Miguel Ángel Vázquez, Pol Henarejos, Ana I. Pérez-Neira, Elena Grechi, Andreas Voight, Juan Carlos Gil, Irene Pappalardo, Federico Di Credico, Rocco Michele Lancellotti
2019 Zenodo  
This document presents an initial approach to the investigation and development of artificial intelligence (AI) mechanisms in satellite communication (SatCom) systems.  ...  We first introduce the nowadays SatCom operations which are strongly dependent on the human intervention.  ...  ACKNOWLEDGEMENT This work is funded by the European Space Agency through the ARTES Future Preparation programme.  ... 
doi:10.5281/zenodo.3982669 fatcat:jmwpgyzoereghboy63jk33k3ou

On the Use of AI for Satellite Communications [article]

Miguel Ángel Vázquez, Pol Henarejos, Ana I. Pérez-Neira, Elena Grechi, Andreas Voight, Juan Carlos Gil, Irene Pappalardo, Federico Di Credico, Rocco Michele Lancellotti
2020 arXiv   pre-print
This document presents an initial approach to the investigation and development of artificial intelligence (AI) mechanisms in satellite communication (SatCom) systems.  ...  We first introduce the nowadays SatCom operations which are strongly dependent on the human intervention.  ...  ACKNOWLEDGEMENT This work is funded by the European Space Agency through the ARTES Future Preparation programme.  ... 
arXiv:2007.10110v1 fatcat:nlzpchhwevgq7bdrtajhpxcxsq

Improving Quality-of-Service of Real-Time Applications over Bandwidth Limited Satellite Communication Networks via Compression [chapter]

Ling Sun, Sei Ping, Chong Eng
2011 Advances in Satellite Communications  
These issues have created some negative impacts on the QoS of communication networks and also user experiences.  ...  Currently, there are many compression schemes, systems and frameworks have been proposed and designed in order to perform efficient data compression for better utilization of the communication channel.  ...  a bad impact on user experience.  ... 
doi:10.5772/23772 fatcat:6pjsgfkgbndgpllqvpyxrwdpvq

Towards 5G: Performance evaluation of 60 GHz UWB OFDM communications under both channel and RF impairments

Rodolfo Gomes, Akram Hammoudeh, Rafael F.S. Caldeirinha, Zaid Al-Daher, Telmo Fernandes, Joao Reis
2017 Physical Communication  
Detailed analysis on the impact of RF and channel impairments on the performance of Ultra-Wideband (UWB) wireless Orthogonal Frequency Division Multiplexing (OFDM) systems based on the IEEE 802.15.3c standard  ...  Additionally, joint distortion effects of coexisting Phase-Noise (PN), mixer IQ imbalances and Power Amplifier (PA) non-linearities, on the performance degradation of a mmWave radio transceiver, combined  ...  C M M SE (k) =Ĥ (k) * |Ĥ(k)| 2 + 1 η (9) Phase Noise and IQ imbalances The impact of phase noise on the performance of OFDM using 16 QAM (Fig. 4a) and 64 QAM (Fig. 4b) , for four low frequency PN  ... 
doi:10.1016/j.phycom.2017.10.011 fatcat:qoebmg4zfnhwvnqwsw2sqlgbw4

Predicting Antenna Noise Temperature Due to Rain Clouds at Microwave and Millimeter-Wave Frequencies

Frank S. Marzano
2007 IEEE Transactions on Antennas and Propagation  
Model-oriented methods to predict antenna noise temperature due to rainfall along slant paths are developed and illustrated for communication systems at Ka-band and above.  ...  The adopted Sky Noise Eddington Model (SNEM) relies on an accurate analytical solution of the radiative transfer equation and on stratiform and convective rainfall stratified structures, synthetically  ...  Martellucci (now at ESA-ESTEC, NL) and Dr. E. Fionda and F. Consalvi of Fondazione Ugo Bordoni, Rome, Italy.  ... 
doi:10.1109/tap.2007.900252 fatcat:cs2w5thjzbct3czknqqzkljug4

Non-Linear Distortion Cancellation and Symbol-Based Equalization in Satellite Forward Links

Svilen Dimitrov
2017 IEEE Transactions on Wireless Communications  
the satellite transponder, and the phase noise at the user terminal, according to the very-small aperture terminal (VSAT) reference scenario.  ...  shows up to 4.95-dB energy efficiency gain for 32-level amplitude and phase-shift keying (32-APSK).  ...  SATELLITE SYSTEM MODEL In a satellite communication system, a gateway relays message signals designated to user terminals over a satellite.  ... 
doi:10.1109/twc.2017.2699185 fatcat:adb7xup23ncinhxuey6d3scdja

A Novel Interactive Communication System Realization through Smart Low Noise Block Downconverter

Krishn Kumar Gupt
2018 International Journal of Information Technology and Computer Science  
A low noise blockdownconverter (LNB) is the signal receiving device used for satellite TV reception mounted on the satellite dishes.  ...  This paper describes the study and design of a smart low noise block downconverter (LNB) used for satellite communication, transmission in Ka band (29.5 to 30 GHz) and reception in Ku band (10.7 to 12.75  ...  Bera, under guidance of whom he learned lot of things during his previous research work, and also for providing some notes which were useful in completing this work.  ... 
doi:10.5815/ijitcs.2018.07.05 fatcat:rauc4y3svrewnoxwbpocfejrse

A Survey on Non-Geostationary Satellite Systems: The Communication Perspective [article]

Hayder Al-Hraishawi, Houcine Chougrani, Steven Kisseleff, Eva Lagunas, Symeon Chatzinotas
2021 arXiv   pre-print
These unprecedented challenges are also discussed in this paper, including coexistence with GSO systems in terms of spectrum access and regulatory issues, satellite constellation and architecture designs  ...  NGSO communication systems are known for a number of key features such as lower propagation delay, smaller size, and lower signal losses in comparison to the conventional geostationary orbit (GSO) satellites  ...  satellite terminals and the NCC on the a careful system design.  ... 
arXiv:2107.05312v2 fatcat:dqov3icnibfdrhzxfwkhsykfcq
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