Filters








226 Hits in 10.6 sec

Digital modulation and coding for satellite optical feeder links

Svilen Dimitrov, Balazs Matuz, Gianluigi Liva, Ricardo Barrios, Ramon Mata-Calvo, Dirk Giggenbach
2014 2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC)  
In this paper, a packet-level forward error correction (FEC) coding technique and pre-distortion adaptive optics (AO) technology are applied to a digital transmission scheme for optical feeder links in  ...  Therefore, in this study, NRZ-OOK is chosen for application in HTS optical feeder links.  ...  AND COD. FOR SAT. OPT. FEEDER LINKS W. PRE-DIST. ADAPT. OPT.  ... 
doi:10.1109/asms-spsc.2014.6934537 dblp:conf/asms-spsc/DimitrovMLBCG14 fatcat:oqlpbqvhwfgopfe3ohtrchyvce

Total Degradation of a DVB-S2 Satellite System with Analog Transparent Optical Feeder Link

Alexis A. Dowhuszko, Alberto Mengali, Pantelis-Daniel Arapoglou, Ana I. Perez-Neira
2019 2019 IEEE Global Communications Conference (GLOBECOM)  
Digital Pre-Distortion (DPD) and linear equalization are also implemented to mitigate the impact of the non-linear distortion and the inter-symbol interference on the Packet Error Rate (PER) of the received  ...  Two main sources of nonlinearity are considered to characterize the effect that the satellite forward link has in the DVB-S2 signal, namely the optical Mach-Zehnder Modulator (MZM) in the gateway and the  ...  Orange blocks represent the optical feeder link, whereas the brown blocks perform pre-and post-distortion compensation. optical feeder link (valid when MZM β is low).  ... 
doi:10.1109/globecom38437.2019.9013421 dblp:conf/globecom/DowhuszkoMAP19 fatcat:se2h64gorrdhbc6fcidhzjij5e

Total degradation of a DVB-S2 satellite system with analog transparent optical feeder link

Alexis A. Dowhuszko, Alberto Mengali, Pantelis-Daniel Arapoglou, Ana I. Pérez-Neira
2019 Zenodo  
Digital Pre-Distortion (DPD) and linear equalization are also implemented to mitigate the impact of the non-linear distortion and the inter-symbol interference on the Packet Error Rate (PER) of the received  ...  Two main sources of nonlinearity are considered to characterize the effect that the satellite forward link has in the DVB-S2 signal, namely the optical Mach- Zehnder Modulator (MZM) in the gateway and  ...  Orange blocks represent the optical feeder link, whereas the brown blocks perform pre-and post-distortion compensation. optical feeder link (valid when MZM β is low).  ... 
doi:10.5281/zenodo.3628444 fatcat:jgpr4lkllza5rlxqay422ibiqe

Optical feeder links for high throughput satellites

Bernard Roy, Sylvain Poulenard, Svilen Dimitrov, Ricardo Barrios, Dirk Giggenbach, Arnaud Le Kernec, Michel Sotom
2015 2015 IEEE International Conference on Space Optical Systems and Applications (ICSOS)  
Optical feeders for geostationary High Throughput Satellites (HTS) systems based on 1.55µm wavelength technology are expected to enable to transmit up to several terabits over one active link.  ...  A desirable option of transmission architecture is an optical feeder link transparent with respect to the user air interface.  ...  The authors of this paper would like to acknowledge the European Commission FP7 Programme and the members of the BATS Consortium.  ... 
doi:10.1109/icsos.2015.7425074 fatcat:nrg5cm2wlrgkzbxet7piewgnyy

End-to-end error control coding capability of NB-IoT transmissions in a GEO satellite system with time-packed optical feeder link

Joan Bas, Alexis A. Dowhuszko
2020 Zenodo  
Narrow-Band (NB) IoT transmissions, with suitable Modulation and Coding Scheme (MCS), are Detected-and-Forwarded onboard the satellite, mapping each QAM symbol of the radio access link (uplink) into another  ...  The Inter-Symbol Interference (ISI) that the time-packed feeder link generates is mitigated in part at the satellite gateway, using for this purpose an adaptive linear equalizer.  ...  In this situation, Digital Pre-Distortion (DPD) is needed to keep the impact of non-linear distortion under control [?] .  ... 
doi:10.5281/zenodo.4458664 fatcat:3mhpezizunfotgqjvle6nw24wi

Optical feeder link architectures for very HTS: issues and possibilities

Pantelis-Daniel Arapoglou, Nicolas Girault, Nikos Karafolas, Zoran Sodnik, Bruno Cugny
2019 International Conference on Space Optics — ICSO 2018  
The paper deals with an analysis of very High Throughput Satellite (VHTS) systems employing optical feeder links.  ...  To do so, a fixed set of user requirements is selected that allows for different optical feeder link options to be compared and evaluated on a common basis.  ...  ACKNOWLEDGMENTS The authors would like to acknowledge the inputs and contributions from all their colleagues participating in this Feeder Link study and particularly their colleagues from the optoelectronics  ... 
doi:10.1117/12.2536002 fatcat:ctul2yor6fervetbez742dlhpq

Optical technologies for terabit/s-throughput feeder link

Rudolf Saathof, Remco den Breeje, Wimar Klop, Stefan Kuiper, Niek Doelman, Federico Pettazzi, Amir Vosteen, Niel Truyens, Will Crowcombe, Jet Human, Ivan Ferrario, Ramon Mata Calvo (+5 others)
2017 2017 IEEE International Conference on Space Optical Systems and Applications (ICSOS)  
To overcome data rate limitations of RF communication links with satellites, TNO and DLR envision optical free-space communication feeder links for next generation high throughput satellites.  ...  Based on these parameters, requirements and status of the link-subsystems are discussed, and a roadmap is presented, aimed at achieving terabit per second optical feeder links.  ...  The DVB standards describe the modulation and coding schemes for broadband satellite communication links.  ... 
doi:10.1109/icsos.2017.8357221 fatcat:yg4afpq6anfupfg4iktju2hcre

Space Optical Links for Communication Networks [chapter]

Alberto Carrasco-Casado, Ramon Mata-Calvo
2020 Springer Handbooks  
Free-space optical communication has finally emerged as a key technology for solving the increasing bandwidth limitations for space communication while reducing the size, weight and power of satellite  ...  In the last few years, many missions have demonstrated in orbit the fundamental principles of this technology proving to be ready for operational deployment, and we are now witnessing the emergence of  ...  Both adaptive-optics system and pointing system are applied for both link directions, in downlink for fiber coupling and in uplink for precompensation of the beam wander and phase distortions.  ... 
doi:10.1007/978-3-030-16250-4_34 fatcat:fw7pidjeszhzrhog2dt6gguyaq

On the Use of NB-IoT over GEO Satellite Systems with Time-Packed Optical Feeder Links for Over-the-Air Firmware/Software Updates of Machine-Type Terminals

Joan Bas, Alexis A. Dowhuszko
2021 Sensors  
The effects of the impairments introduced in both the optical feeder and radio access links are characterized in detail, and the end-to-end error correction capabilities of the Modulation and Coding Schemes  ...  Free Space Optical (FSO) link represents a practical solution to avoid the bottleneck that the satellite gateway experiences in the feeder link.  ...  For those situation, the use of Digital Pre-Distortion (DPD) is necessary to keep non-linear distortion under control [25] .  ... 
doi:10.3390/s21123952 fatcat:a65v2bngmnf67mgi4y63fcg5qq

Performance analysis of an adaptive optics based optical feeder link ground station

N. Védrenne, C. Petit, A. Montmerle-Bonnefois, C. B. Lim, Jean-Marc Conan, L. Paillier, M.-T. Velluet, K. Caillault, F. Gustave, A. Durecu, V. Michau, F. Cassaing (+5 others)
2021 International Conference on Space Optics — ICSO 2020  
Based on the conclusion drawn from this experiment, we present the results of a preliminary design study of an Adaptive Optics (AO) pre-compensated optical feeder links ground station.  ...  Among other solutions, GEO optical feeder links are seen as the backbone of the future globalized very high data rate satellite-based telecommunication networks.  ...  PRE-COMPENSATED FEEDER LINK BUDGET Adaptive optics based ground station challenges The very basic principle of adaptive optics pre-compensation relies on the ability to probe the downlink turbulence  ... 
doi:10.1117/12.2599232 fatcat:jw547sch3fayxhv63rgdetsx5a

Light-Weight Time-Packing Detection Schemes for Optical Feeder Link Adaptation in High Throughput Satellite Systems

Joan Bas, Alexis A. Dowhuszko
2020 Zenodo  
This paper shows low complex decoding algorithms for time-packed optical feeder links when they are used in High Throughput Satellite (HTS) system with fully regenerative payloads.  ...  As expected, both techniques, although sub-optimal, permit to mitigate in a large extent the Inter-Symbol Interference (ISI) and so, provide a finer granularity on the link adaptation of the optical feeder  ...  However, Digital Pre-Distortion compensation would have to be implemented in transmission [17] .  ... 
doi:10.5281/zenodo.4429940 fatcat:7lomhgjpzjeaxgyoiicdmwwvqi

Ground‐to‐GEO optical feeder links for very high throughput satellite networks: Accent on diversity techniques

Alberto Mengali, Charilaos I. Kourogiorgas, Nikolaos K. Lyras, Bhavani Shankar Mysore Rama Rao, Farbod Kayhan, Athanasios D. Panagopoulos, Thomas Bäumer, Konstantinos Liolis
2020 International Journal of Satellite Communications And Networking  
K E Y W O R D S analog and digital transparent payloads, channel models, GEO networks, microdiversity and macrodiversity, optical feeder links, optical ground station network selection, optical received  ...  This paper studies the use of optical feeder links in very high throughput satellites (VHTS) networks with emphasis on gateway diversity techniques to mitigate the inherent propagation losses in optical  ...  | CONCLUSIONS The paper represents the outcome of a study activity on satellite systems with optical feeder link and RF user links.  ... 
doi:10.1002/sat.1372 fatcat:677bgl34qfggbd5jhrhcw67clm

Front Matter: Volume 10562

Nikos Karafolas, Bruno Cugny, Zoran Sodnik
2018 International Conference on Space Optics — ICSO 2016  
and Mach-Zehnder modulator [10562-164] 1056 20 Tunable and reconfigurable photonic Rf filtering for flexible payloads [10562-259] PHOTONIC MICROWAVE AND DIGITAL PAYLOADS 1056 21 Optical beamforming based  ...  for space using gallium arsenide [10562-185] 1056 1B Mid-power pm booster and optical fiber pre-amplifier for 1.55 um satellite laser communications [10562-122] 1056 1C Radiation hardening commercial  ...  adaptive optical pre-compensation for optical feeder links [10562-231] 1056 5W High reproducible CO2 laser spliced fiber-collimator for a space borne laser system [10562-240] 1056 5X Multiple-beam output  ... 
doi:10.1117/12.2322406 fatcat:c55jgnjt3jgi7bzsnl2acawida

Photonic Pre-Coding for MIMO System in Satellite-Terrestrial Communication

Tao Lin, Haiyang Yu, Shanghong Zhao, Jian Guo Liu, Kun Zhang, Wei Jiang, Guodong Wang, He Li, Xuan Li
2020 IEEE Access  
In this paper, a photonic based pre-coding for multiple input multiple output (MIMO) satellite communication is realized without digital signal processing (DSP) structure.  ...  INDEX TERMS Microwave photonics, satellite communications, pre-coding, MIMO.  ...  ACKNOWLEDGMENT (Tao Lin and Haiyang Yu are co-first authors.)  ... 
doi:10.1109/access.2020.2976871 fatcat:rmqtv4natff53by4gchwpjskj4

Space-Ground Coherent Optical links: Ground Receiver Performance With Adaptive Optics and Digital Phase-Locked Loop [article]

Laurie Paillier, Raphaël Le Bidan, Jean-Marc Conan, Géraldine Artaud, Nicolas Védrenne, Yves Jaouën
2019 arXiv   pre-print
In the framework of optical high data rate satellite-to-ground links, we investigate the performance of a coherent receiver which combines an adaptive optics system and a digital carrier synchronization  ...  low Earth orbit satellite-to-ground transmission link.  ...  Fig. 1 . 1 General principle of a satellite-to-ground optical link with adaptive optics correction Fig. 2 . 2 Overall architecture of a LEO-to-ground communication link with coherent detection TABLE  ... 
arXiv:1911.11851v1 fatcat:tbiueambtbdvdggu4oijxsqioi
« Previous Showing results 1 — 15 out of 226 results