464 citations · 657 across the 14 of their papers we have counts for
18 papers
First Experiments with a 5G-Connected Drone
Raheeb Muzaffar, Christian Raffelsberger, Aymen Fakhreddine +3
We perform experiments on the wireless communication between a drone flying at different heights and a commercial 5G base station. An Android-based tool deployed on a 5G test platf…
Outage Duration in Poisson Networks and its Application to Erasure Codes
Udo Schilcher, Siddhartha Borkotoky, Jorge F. Schmidt +1
We derive the probability distribution of the link outage duration at a typical receiver in a wireless network with Poisson distributed interferers sending messages with slotted ra…
A Performance Evaluation Tool for Drone Communications in 4G Cellular Networks
Christian Raffelsberger, Raheeb Muzaffar, Christian Bettstetter
We introduce a measurement tool for the performance evaluation of wireless communications with drones over cellular networks. The Android software records various LTE parameters, e…
Cooperative Relaying in LoRa Sensor Networks
Siddhartha Borkotoky, Udo Schilcher, Christian Bettstetter
We propose a communication scheme with relays to improve the reliability of a Long Range (LoRa) sensor network with duty-cycle limitations. The relays overhear the sensors' transmi…
Allocation of Repetition Redundancy in LoRa
Siddhartha Borkotoky, Christian Bettstetter, Udo Schilcher +1
We consider a multipoint-to-point network in which sensors periodically send measurements to a gateway. The system uses Long Range (LoRa) communications in a frequency band with du…
A review of swarmalators and their potential in bio-inspired computing
Kevin O'Keeffe, Christian Bettstetter
From fireflies to heart cells, many systems in Nature show the remarkable ability to spontaneously fall into synchrony. By imitating Nature's success at self-synchronizing, scienti…
Interference Prediction in Wireless Networks: Stochastic Geometry meets Recursive Filtering
Jorge F. Schmidt, Udo Schilcher, Mahin K. Atiq +1
This article proposes and evaluates a technique to predict the level of interference in wireless networks. We design a recursive predictor that estimates future interference values…
Robots that Sync and Swarm: A Proof of Concept in ROS 2
Agata Barciś, Michał Barciś, Christian Bettstetter
A unified mathematical model for synchronisation and swarming has recently been proposed. Each system entity, called a "swarmalator", coordinates its internal phase and location wi…
On Interference Dynamics in Matérn Networks
Udo Schilcher, Jorge F. Schmidt, Christian Bettstetter
A thorough understanding of the temporal dynamics of interference in wireless networks is crucial for the design of communication protocols, scheduling, and interference management…
Auto-Correlation and Coherence Time of Interference in Poisson Networks
Udo Schilcher, Jorge F. Schmidt, Mahin K. Atiq +1
The dynamics of interference over space and time influences the performance of wireless communication systems, yet its features are still not fully understood. This article analyze…
On Access Control in Cabin-Based Transport Systems
Pasquale Grippa, Udo Schilcher, Christian Bettstetter
We analyze a boarding solution for a transport system in which the number of passengers allowed to enter a transport cabin is automatically controlled. Expressions charac- terizing…
Guarded by Gamora: How Access Control Balances Out Waiting Times in Transport Systems
Pasquale Grippa, Evşen Yanmaz, Paul Ladinig +1
A transport system with passengers traveling between stations in periodically arriving cabins is considered. We propose and evaluate an access control algorithm that dynamically li…
Cellular-Connected UAVs over 5G: Deep Reinforcement Learning for Interference Management
Ursula Challita, Walid Saad, Christian Bettstetter
In this paper, an interference-aware path planning scheme for a network of cellular-connected unmanned aerial vehicles (UAVs) is proposed. In particular, each UAV aims at achieving…
Job Selection in a Network of Autonomous UAVs for Delivery of Goods
Pasquale Grippa, Doris A. Behrens, Christian Bettstetter +1
This article analyzes two classes of job selection policies that control how a network of autonomous aerial vehicles delivers goods from depots to customers. Customer requests (job…
Interference Functionals in Poisson Networks
Udo Schilcher, Stavros Toumpis, Martin Haenggi +3
We propose and prove a theorem that allows the calculation of a class of functionals on Poisson point processes that have the form of expected values of sum-products of functions.…
Precision of Pulse-Coupled Oscillator Synchronization on FPGA-Based Radios
Günther Brandner, Johannes Klinglmayr, Udo Schilcher +2
The precision of synchronization algorithms based on the theory of pulse-coupled oscillators is evaluated on FPGA-based radios for the first time. Measurements show that such algor…
Packet Travel Times in Wireless Relay Chains under Spatially and Temporally Dependent Interference
Alessandro Crismani, Udo Schilcher, Stavros Toumpis +2
We investigate the statistics of the number of time slots that it takes a packet to travel through a chain of wireless relays. Derivations are performed assuming an interferenc…
Cooperative Relaying in Wireless Networks under Spatially and Temporally Correlated Interference
Alessandro Crismani, Udo Schilcher, Günther Brandner +2
We analyze the performance of an interference-limited, decode-and-forward, cooperative relaying system that comprises a source, a destination, and relays, placed arbitrarily on…