Results 41 to 50 of about 18,596 (191)
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani +2 more
wiley +1 more source
A comprehensive design and performance analysis of low Earth orbit satellite quantum communication
New Journal of Physics, 2013 Optical quantum communication utilizing satellite platforms has the potential to extend the reach of quantum key distribution (QKD) from terrestrial limits of ∼200 km to global scales.
J-P Bourgoin +11 more
doaj +1 more source
Development of CINEMA Mission Uplink Communication System [PDF]
Journal of Astronomy and Space Sciences, 2012 Triplet Ionospheric Observatory (TRIO) CubeSatforIon, Neutral, Electron MAgneticfields (CINEMA) is a CubeSat with the weight 3 kg that will be operated in the orbit conditions of about 800 km altitude and 90° inclination angle, using the S-band and ...
Nayoung Yoon +8 more
doaj +1 more source
Satellite-based entanglement distribution and quantum teleportation with continuous variables
, 2023 Advances in satellite quantum communications aim at reshaping the global telecommunication network by increasing the security of the transferred information.
Mikel Sanz (15058255) +2 more
core +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley +1 more source
Spectrum Allocation Scheme Based on Stable Matching in Hierarchical Cognitive Satellite Network
IEEE Access, 2022 Aiming at the problem that the number of users and available bandwidth of the current satellite service are increasing significantly, and the spectrum utilization rate of the existing spectrum allocation scheme is low, this paper first establishes a ...
Zhiguo Liu, Wenqiang Lv, Xiaobo Ren
doaj +1 more source
Dynamic Cell Division for Interference Management in Satellite Direct‐to‐Cell Systems
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Direct‐to‐cell (D2C) connectivity enables future non‐terrestrial networks to provide service directly to standard terrestrial user equipment (UE) when terrestrial networks (TN) are unavailable. In this work, the satellite system is considered as a secondary network that supplements existing TN coverage while minimizing interference to the ...
Satya Chan +3 more
wiley +1 more source
International Journal of Aerospace Engineering, 2019 Small satellite image downlink scheduling problem (SSIDSP) is an important part of satellite mission planning. SSIDSP mainly needs to balance how to better match the limited receiving capacity of the ground station with the limited satellite resources ...
Yan-Jie Song +4 more
doaj +1 more source
Sensors, 2022 Coherent detection provides the optimum performance for free space optical (FSO) communication systems. However, such detection systems are expensive and require digital phase noise compensation.
Mahdi Naghshvarianjahromi +2 more
doaj +1 more source
A spatial interference minimization strategy for the correlated LTE downlink channel [PDF]
, 2010 In a downlink transmission, users can benefit from the high capacity gain achieved by transmitting independent data streams from multiple antennas to multiple users sharing the same physical time-frequency resources.
Nordin, R +5 more
core +1 more source