@inproceedings{RaspSahinbasReisingeretal., author = {Rasp, Franziska and Sahinbas, Burak and Reisinger, Thomas and Leitgeb, Erich and Hipp, Susanne}, title = {Polarization-based peak distortion mitigation for 5G sidelink positioning}, series = {2025 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 18-20 September 2025, Split, Coratia}, booktitle = {2025 International Conference on Software, Telecommunications and Computer Networks (SoftCOM), 18-20 September 2025, Split, Coratia}, publisher = {IEEE}, address = {Split}, isbn = {978-953-290-143-6}, issn = {1847-358X}, pages = {6}, abstract = {For cooperative driving both environmental perception and communication with other vehicles and the infrastructure are essential to avoid safety critical situations. The 5G Sidelink, as part of the Cellular Vehicle to Everything framework, enables both communication and, since 3GPP Release 18, positioning for distance estimation between vehicles. Due to the expected bandwidth limitations of 5G Sidelink in the Intelligent Transportation System band, combined with signal distortion caused by multi-path superposition, achieving submeter positioning accuracy is a significant challenge. Polarization diversity is investigated as a potential approach to mitigate errors resulting from signal distortion and subsequent peak shifts due to multi-path superposition. This work investigates the potential for reduced peak shift errors through the use of dual-polarized receive antennas. The received signals are processed using a polarization scan algorithm and compared to the accuracy achieved with single-antenna systems. The analysis is conducted using the Quasi Deterministic Radio Channel Generator framework with statistical Vehicle-to-Everything channel models. Simulation results show that polarization scan-based postprocessing reduces peak shifts and improves robustness in scenarios with polarization-mismatched antenna configurations.}, language = {en} } @inproceedings{RaspSahinbasReisingeretal., author = {Rasp, Franziska and Sahinbas, Burak and Reisinger, Thomas and Hipp, Susanne and Leitgeb, Erich}, title = {Experimental Validation of a Full Polarimetric Channel Model with Frequency-Dependent Antenna Gain for Polarization Diversity Studies}, series = {2025 19th European Conference on Antennas and Propagation (EuCAP), 30. March-04. April 2025, Stockholm}, booktitle = {2025 19th European Conference on Antennas and Propagation (EuCAP), 30. March-04. April 2025, Stockholm}, publisher = {IEEE}, isbn = {978-88-31299-10-7}, doi = {10.23919/EuCAP63536.2025.10999403}, pages = {5}, abstract = {Autonomous driving, child presence detection, and digital car keys rely on precise localization. Therefore, accurate simulation environments are essential for designing radio systems and optimizing their positioning algorithms. A critical aspect of developing a reliable localization system is modeling the physical radio channel, which includes the transmitting antenna, the propagation medium, and the receiving antenna. However, existing channel models often overlook important physical effects of antennas, such as frequency dependence and polarization, leading to discrepancies between simulations and real-world measurements. To address this, the paper enhances full polarimetric channel models by incorporating the frequency dependence of both antennas and propagation channels. The theoretical model is validated through Vector Network Analyzer channel sounding measurements using reference antennas. This approach provides a foundation for polarization-based post-processing, ultimately improving positioning accuracy.}, language = {en} } @inproceedings{NiemetzFuhrmannFarmbauer, author = {Niemetz, Michael and Fuhrmann, Thomas and Farmbauer, Michael}, title = {Comprehensive Amateur Radio Education including Public Outreach}, series = {IEEE Integrated STEM Education Conference (ISEC), 16-16 March 2019, Princeton, NJ, USA}, booktitle = {IEEE Integrated STEM Education Conference (ISEC), 16-16 March 2019, Princeton, NJ, USA}, publisher = {IEEE}, doi = {10.1109/ISECon.2019.8882078}, pages = {98 -- 103}, abstract = {An amateur radio lecture was developed and is conducted within the general education program of the Ostbayerische Technische Hochschule Regensburg. This course enables the students to participate in a variety of activities within the university. Different learning formats for communication engineering are carried out in combination with an amateur radio station of the university. Additionally, some of the projects serve as anchor points for increased visibility of the university in local society, e.g. by carrying out public events in connection with the local amateur radio community. It is seen that this course together with the amateur radio station have several positive effects for technical education and university visibility.}, language = {en} }