859 citations
- Technical University of DenmarkDK12 papers
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28 papers · 1 filter
Beamspace MIMO for Satellite Swarms
Maik Röper, Bho Matthiesen, Dirk Wübben +2
Systems of small distributed satellites in low Earth orbit (LEO) transmitting cooperatively to a multiple antenna ground station (GS) are investigated. These satellite swarms have…
Statistics of the Effective Massive MIMO Channel in Correlated Rician Fading
Jens Abraham, Pablo Ramirez-Espinosa, Torbjörn Ekman
Massive MIMO base stations use multiple spatial diversity branches, which are often assumed to be uncorrelated in theoretical work. Correlated branches are considered seldom since…
Dynamic polarizability of low-dimensional excitons
Thomas Garm Pedersen
Excitons in low-dimensional materials behave mathematically as confined hydrogen atoms. An appealing unified description of confinement in quantum wells or wires, etc., is found by…
Remote Anomaly Detection in Industry 4.0 Using Resource-Constrained Devices
Anders E. Kalør, Daniel Michelsanti, Federico Chiariotti +2
A central use case for the Internet of Things (IoT) is the adoption of sensors to monitor physical processes, such as the environment and industrial manufacturing processes, where…
Active Learning of Markov Decision Processes using Baum-Welch algorithm (Extended)
Giovanni Bacci, Anna Ingólfsdóttir, Kim Larsen +1
Cyber-physical systems (CPSs) are naturally modelled as reactive systems with nondeterministic and probabilistic dynamics. Model-based verification techniques have proved effective…
Safe Dynamic Programming
Rafal Wisniewski, Manuela L. Bujorianu
We incorporate safety specifications into dynamic programming. Explicitly, we address the minimization problem of a Markov decision process up to a stopping time with safety constr…