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Fakultät für Elektrotechnik und Informationstechnik

International Best Paper Awards / Competitions / Presentations:

S. Häger, M. Danger, K. Heimann, Y. Gümüs, S. Böcker, C. Wietfeld, "Custom Design and Experimental Evaluation of Passive Reflectors for mmWave Private Networks," in IEEE Int'l Symp. on Local and Metropolitan Area Networks (LANMAN), Boston, USA, July 2024

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  • Best Paper Awards
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Future 6G private networks rely on millimeter-wave (mmWave) cells for ultra-high local connectivity, but non-lineof-sight (NLOS) scenarios demand costly dense deployments. Instead, a new approach gaining much attention in research introduces intelligent reflecting surfaces (IRSs) to increase coverage with fewer full-blown active antennas. In an earlier work, we introduced and validated a new passive IRS architecture leveraging additive manufacturing to provide reflections tailored exactly to the needs of a specific scenario. The design goal for so-called HELIOS reflectors is to procure a geometry realizing high power gains for mobile devices in a well-defined service area. This contribution introduces a design process coupling electromagnetic (EM) simulations with differential evolution-based optimization to custom-tailor the reflector shape. Our indoor measurements confirm the specified reflection characteristics and find that up to, on average, 41.2 % higher gain in receive power is attained over a broad angular range compared with a narrow-reflecting IRS. By increasing the IRS size, the peak gain of 20 dB can be matched. Moreover, it is found that the designed HELIOS reflectors support the entire mmWave spectrum. An additional benefit is given by the fact that the sub-6 GHz anchor link attains power gains of up to 12 dB from the same reflectors.

 

Full paper reference:

S. Häger, M. Danger, K. Heimann, Y. Gümüs, S. Böcker, C. Wietfeld, "Custom Design and Experimental Evaluation of Passive Reflectors for mmWave Private Networks," in IEEE International Symposium on Local and Metropolitan Area Networks (LANMAN), Boston, USA, July 2024. [pdf]

 

Awards by Informationstechnische Gesellschaft (ITG) in the VDE

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2016 - Advancement Award Dr.-Ing. Christoph Ide

Dr.-Ing. Christoph Ide, former head of the research groups of the CNI and Alumni of SFB 876, received one of the prestigious junior awards by the Informationstechnische Gesellschaft (ITG) in the VDE for his thesis "Resource-Efficient LTE Machine-Type Communication in Vehicular Environments" in November 2016. The nationally fiercely contested award was handed over at a solemn celebration at the Berlin-Brandenburgische Akademie der Wissenschaften in Berlin on November 29, 2016. The research results of the DFG Sonderforschungsbereich SFB 876 "Datenanalyse unter Ressourcenbeschränkungen" are an excellent contribution to the development of future mobile radio-based traffic systems, which will support growing automation of the reliable, simultaneous and efficient communication between the single system components. This research also makes a valuable contribution to future 5G networks, especially in terms of the Internet of Things.

2013 ITG Awards 2013 for Dr.-Ing. Niklas Goddemeier, Dr.-Ing. Kai Daniel and Prof. Dr.-Ing. Christian Wietfeld

For their research in the field of networked robotic systems, Dr.-Ing. Niklas Goddemeier, Dr.-Ing. Kai Daniel and Prof. Dr.-Ing. Christian Wietfeld received the coveted ITG Awards 2013 by the Informationstechnische Gesellschaft in the VDE at Berlin-Brandenburgische Akademie der Wissenschaften in Berlin on November 12, 2013.

The ITG Award is being advertised annually and awarded for outstanding publications, in this case for an article in the internationally well-known IEEE Journal on Selected Areas of Communications.

Role-Based Connectivity Management with Realistic Air-to-Ground Channels for Cooperative UAVs: Ad-hoc aerial sensor networks leveraging MUAVs (Micro Unmanned Aerial Vehicles) are ideally suited to cost-efficiently explore unknown or hostile environments for example in case of incidents producing harmful gases or radiation. In this manuscript we present results on the investigations of communication-aware steering algorithms for cooperative MUAV swarms. The mission objective is to achieve a maximum spatial exploration efficiency with the simultaneous ability to self-optimize the communication links by exploiting controlled mobility. While our previous work has mainly considered the performance of the Air-to-Air mesh network, in this paper we focus on the Air-to-Ground-link connectivity control. To achieve appropriate communication links to a central sensor data sink even while exploring larger search areas, an agent-based role management strategy is used to provide suitable multi-hop connectivity. The novel algorithms are investigated for static as well as dynamically changing environments. Key results include a detailed realistic aerial channel characterization and network dimensioning analysis considering numbers of MUAVs and density of ground stations vs. exploration speed and sensor data latency.

2014 VDE-Award for Master Graduate - M.Sc. David Öhmann

Once a year, the VDE Rhein-Ruhr e.V. awards junior engineers for excellent bachelor's and master's degrees. Also this year,  the organization honored excellent degrees and continued its active dedication to young engineers. The solemn ceremony took place at the trade fair "E-world" in Essen on February 12, 2014, for the first time. For TU Dortmund, David Öhmann, whose master thesis "Kooperatives Verbindungsmanagement von heterogenen Funkzugangssystemen im Automobilumfeld" was supervised by the CNI and collaborated with BMW in Munich, has been awarded.

 

Other Awards