Results 111 to 120 of about 18,596 (191)

Reinforcement Learning for Secure Semantic LEO Satellite Networks: Joint Fidelity-Secrecy Power Allocation. [PDF]

Sensors (Basel)
Zhou F, Zhu X.
europepmc   +1 more source

Spatial de-correlation of the UTRA-FDD radio channel

, 2000
For smart antenna deployment in Frequency Division Duplex (FDD) applications the downlink weight vector can be derived from the uplink steering vector, assuming a degree of correlation between these channels.
Allen, B, Beach, MA, Karlsson, Peter
core  

Downlink Analysis of a Low-Earth Orbit Satellite Considering an Airborne Interference Source Moving on Various Trajectory

This paper analyzes low-Earth-orbit (LEO) satellite downlinks when an airborne interference source moves parallel to the satellite trajectory by considering the relative angle differences between the satellites and the interference sources.
Eunjung Kang, Hosung Choo, YoungJu Park, JungHoon Kim   +3 more
core   +1 more source

Performance evaluation and validation of a quad-element super-wideband fractal MIMO antenna with integrated quad-band filtering capability for advanced 5G/IoT systems. [PDF]

Sci Rep
Sohi AK, Kumar GN, Singh AK, Addepalli T, Zakaria Z, Al-Gburi AJA.   +5 more
europepmc   +1 more source

Ground User Clustering for Adaptive Multibeam GEO Satellite Networks. [PDF]

Sensors (Basel)
Shehata H, Inaltekin H, Collings IB.
europepmc   +1 more source

Bit-error Rate Analysis of Coherent Detection Equal Gain Combining Spatial Diversity Receivers for Satellite-to-Ground Downlink Optical Transmissions

DEStech Transactions on Computer Science and Engineering, 2018
Kangning Li, Bo Lin, Jing Ma, Mengnan Li
openaire   +2 more sources

Modulation-mode and power-assignment for SVD-and GMD-assisted downlink MIMO systems

, 2010
Multiuser multiple-input multiple-output (MIMO) downlink (DL) transmission schemes experience both multiuser interference (MUI) as well as inter-antenna interference.
Ahrens, Andreas, Benavente Peces, César, Aust, Sebastian   +2 more
core  

Joint Beamforming for Integrated Satellite-Terrestrial ISAC Systems. [PDF]

Sensors (Basel)
Wang T, Wang Q.
europepmc   +1 more source

Maximizing Nanosatellite Throughput via Dynamic Scheduling and Distributed Ground Stations. [PDF]

Sensors (Basel)
Ronen R, Ben-Moshe B.
europepmc   +1 more source

Development of a high data rate VHF and UHF satellite ground station

, 2014
Since April 2010, NTU has started the development of VELOX-1. It is the first Singapore nano-satellite to operate in Low Earth's Orbit (LEO) and also the First nano-satellite mission in South East Asia.
Ye, Chuang
core