Results 261 to 270 of about 13,582,991 (332)
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The constellation design problem
Annales Des Télécommunications, 1995We introduce here a new approach for designing constellations (signal sets) at high signal-to-noise ratio. It is based on a geometric formulation of the design problem. The sphere packing formulation for the Gaussian case stems as an example and the results that this approach gives on fading channels are surveyed.
Xavier Giraud, Jean -Claude Belfiore
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Multi-layer LEO Satellite Constellation Design for Seamless Global Coverage
Global Communications Conference, 2021In this paper, we investigate the traffic-sensitive multi-layer low Earth orbit (LEO) satellite-terrestrial network. Massive terrestrial user access to the core network is realized via the backhaul supported by multi-layer LEO satellites. The ultra-dense
Pengfei Wang, Boya Di, Lingyang Song
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A multi-objective optimization framework of constellation design for emergency observation
Advances in Space Research, 2021To meet the urgent needs of emergency observation missions, a well-designed constellation is key to ensuring system performance. This paper presents a multi-objective optimization framework which is well suited for constellation designers to identify key
Jiaxin Hu +3 more
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Constellation Design Method for Large Scale Satellite Optical Networks
International Conference on Optical Communications and Networks, 2021With the integration progress of space- and ground-based Internet, the demand for large-scale satellite networks is increasing. However, the efforts on constellation design for large-scale satellite networks are rarely observed.
Mingzhu Yang +4 more
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Quick-response Microsatellite Constellation Design
2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference (ITNEC), 2020In response to the task of detecting the target sea area in an emergency, a concept of building a quick-response mi-crosatellite constellation was proposed. Firstly, the two central purposes of the design of micro-satellite constellations were defined, that is, to carry out detailed detection under emergency conditions and to conduct regular long-term ...
Wenzhe Ding, Xinhong Li, Hong Yang
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Optimization of a LEO‐PNT Constellation: Design Considerations and Open Challenges
International Journal of Satellite Communications And NetworkingAs the satellite launch and manufacturing costs have become affordable, the industrial and academic interest in low‐Earth orbit (LEO) satellites has increased in recent years.
Kaan Çelikbilek, E. Lohan, Jaan Praks
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Learning-Based Constellation Design for Uplink Bi-Static Integrated Sensing and Communication
IEEE Transactions on Vehicular TechnologyThis paper proposes an end-to-end deep learning based constellation design for integrated sensing and communication (ISAC) for the uplink of orthogonal frequency division multiplexing (OFDM) systems.
Jiaming Hu +5 more
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Satellite-constellation design
Computing in Science & Engineering, 1999Presents the rudiments of constellation design to familiarize the reader with some of this field's methods, issues, and concerns. Two exotic constellations are under consideration for various missions.
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VLEO Satellite Constellation Design for Regional Aviation and Marine Coverage
IEEE Transactions on Network Science and EngineeringRecently, the Space-Air-Ground-Sea Integrated Network (SAGSIN) attracts great attention due to its ability to provide high-speed communication services to aviation users (AUs) and marine users (MUs), with Low Earth Orbit (LEO) satellites play an ...
Guoquan Chen +4 more
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Constellation Design for Integrated Sensing and Communication With Random Waveforms
IEEE Transactions on Wireless CommunicationsIntegrated sensing and communication (ISAC) is considered one of the key technologies for next-generation wireless communication. To achieve satisfactory communication and sensing performance simultaneously, it is necessary to maximize compatibility with
Xiaobo Yang +5 more
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