Kompressive Abtastung und spektrales Sensing für kognitive Funksysteme und Funküberwachung
Zusammenfassung der Projektergebnisse
This project has contributed to the theoretical foundations and advanced experimental research in the area of infrastructure assisted radio surveillance and localization. It has facilitated development of novel approaches to signal detection and localization based on the compressed sensing (CS) paradigm, that find potential application in cognitive radio systems, distributed radio surveillance and by spectrum regulators. One of the main project aims was investigating approaches for distributed CS-based radio surveillance under realistic signal and propagation conditions. To this end, we studied a number of theoretical and practical issues associated with compressed acquisition and processing of radio signals commonly used in spectrum sensing, time difference of arrival (TDOA) and direction of arrival (DOA) estimation as well as TDOA, received signal strength indication (RSSI) and hybrid localization methods. We developed methods for compressive multiband spectrum sensing, compressive narrowband and multiband DOA estimation, and multiband TDOA estimation from compressed measurements. We also applied sparse recovery ideas to TDOA-based and hybrid TDOA/DOA-based localization and investigated synchronization and self-localization aspects of TDOA-based localization in both theoretical and experimental setups. Finally, we have considered the influence of multipath propagation and looked into ways of exploiting propagation modelling, via ray tracing, for localization improvement in complex propagation scenarios. Besides conducting fundamental theoretical studies, we performed a number of experimental tests to verify our findings and evaluate achievable estimation performance. Among others, these included an implementation and testing of an outdoor TDOA localization system based on the software defined radio (SDR) and a development of a testbed for an antenna array compression emulation with antenna measurements from an anechoic chamber.
Projektbezogene Publikationen (Auswahl)
- “Design and analysis of compressive antenna arrays for direction of arrival estimation”. In: Signal Processing 138 (2017), pp. 35–47
M. Ibrahim, V. Ramireddy, A. Lavrenko, J. König, F. Römer, M. Landmann, M. Grossmann, G. Del Galdo, and R. S Thomä
(Siehe online unter https://doi.org/10.1016/j.sigpro.2017.03.013) - “Distributed software defined radio testbed for real-time emitter localization and tracking”. In: 2017 International Conference on Communications Workshops (ICC Workshops). 2017, pp. 1246–1252
J. Schmitz, F. Bartsch, M. Hernández, and R. Mathar
(Siehe online unter https://doi.org/10.1109/ICCW.2017.7962829) - “Differential Multidimensional Scaling for Self-Localization of TDOA Sensor Networks”. In: Wireless Communications and Networking Conference (WCNC). 2017, pp. 1–5
J. Schmitz, S. Shojaee, S. Toledo, R. C. Hincapie, V. Radhakrishnan, and R. Mathar
(Siehe online unter https://doi.org/10.1109/WCNC.2017.7925868) - “Multiband TDoA estimation from sub-Nyquist samples with distributed wideband sensing nodes”. In: IEEE Global Conference on Signal and Information Processing (GlobalSIP 2017). Montreal, Canada, Nov. 2017, pp. 96–100
A. Lavrenko, F. Römer, Giovanni Del Galdo, and Reiner S. Thomä
(Siehe online unter https://doi.org/10.1109/GlobalSIP.2017.8308611) - “On the Accuracy of Passive Hyperbolic Localization in the Presence of Clock Drift”. In: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC). Montreal, QC, Canada, Oct. 2017, p. 6
S. Shojaee, J. Schmitz, R. Mathar, and S. Toledo
(Siehe online unter https://doi.org/10.1109/PIMRC.2017.8292225) - “On the SNR variability in noisy compressed sensing”. In: IEEE Signal Processing Letters 24.8 (2017), pp. 1148–1152
A. Lavrenko, F. Roemer, G. Del Galdo, and R. Thoma
(Siehe online unter https://doi.org/10.1109/LSP.2017.2689243) - “Sparse framework for hybrid TDOA/DOA multiple emitter localization”. In: IEEE International Symposium on Signal Processing and Information Technology (ISSPIT 2017). Bilbao, Spain, Dec. 2017, pp. 174–179
R. Hincapie, C. Gomez, A. Lavrenko, L. Betancur, and J. Schmitz
(Siehe online unter https://doi.org/10.1109/ISSPIT.2017.8388637) - "Sensing Matrix Sensitivity to Random Gaussian Perturbations in Compressed Sensing," 2018 26th European Signal Processing Conference (EUSIPCO), 2018, pp. 583-587
A. Lavrenko, F. Römer, G. Del Galdo, and R. Thomä
(Siehe online unter https://doi.org/10.23919/EUSIPCO.2018.8553575) - Combining Matrix Design for 2D DoA Estimation with Compressive Antenna Arrays using Stochastic Gradient Descent
S. Pawar, S. Semper, and F. Römer
- “Combining matrix design for 2D DoA estimation with compressive antenna arrays”. In: 22nd International ITG Workshop on Smart Antennas (WSA 2018). Bochum, Germany, Mar. 2018, pp. 1–8
S. Pawar, A. Lavrenko, M. Ibrahim, F. Römer, G. Del Galdo, and R. S. Thomä
- “Compressive Acquisition and Processing of Sparse Analog Signals”. PhD thesis. Technische Universität Ilmenau, July 2018
A. Lavrenko
- “Impact of multipath in a hybrid TDoA/DoA sparse radiolocalization framework”. In: 2018 International Conference on Electromagnetics in Advanced Applications (ICEAA). 2018, pp. 697–700
R. Hincapie, C. Gomez, L. Betancur, A. Lavrenko, and J. Schmitz
(Siehe online unter https://doi.org/10.1109/ICEAA.2018.8520455) - “RSS-based Location and Transmit Power Estimation of Multiple Co-Channel Targets”. In: 15th International Symposium on Wireless Communication Systems (ISWCS’18). Lisbon, Portugal, Aug. 2018, pp. 1–6
E. Zandi and R. Mathar
(Siehe online unter https://doi.org/10.1109/ISWCS.2018.8491105) - “Ultrasound-based Cooperative Indoor Localization for Robotic Applications – Extended Abstract”. In: Microsoft Indoor Localization Competition – IPSN 2018. Porto, Portugal, Apr. 2018, pp. 1–2
J. Schmitz, O. Peters, and R. Mathar
