Thomas Kaiser

ORCID

Publication Activity (10 Years)

Years Active: 1995-2024
Publications (10 Years): 52

Top Venues

IEEE Access

Sensors

WCNC

Trans. Emerg. Telecommun. Technol.

University of Duisburg-Essen, Germany (PHD)

Education History

University of Duisburg-Essen, Germany

PHD

Publications

Aman Batra, Fawad Sheikh, Michael Wiemeler, Diana Göhringer, Thomas Kaiser
Indoor THz N-LoS Communication and Radar Sensing Through Wall Reflections. WCNC (2024)
Deeb Assad Tubail, Mohammed El-Absi, Salama Ikki, Thomas Kaiser
Hardware-Aware Joint Localization-Synchronization and Tracking Using Reconfigurable Intelligent Surfaces in 5G and Beyond. IEEE Open J. Commun. Soc. 5 (2024)
Ahmed El-Awamry, Feng Zheng, Thomas Kaiser, Maher Khaliel
Harmonic FMCW Radar System: Passive Tag Detection and Precise Ranging Estimation. Sensors 24 (8) (2024)
Akram Najjar, Mohammed El-Absi, Thomas Kaiser
Delta-Delay-Phase Precoding Based Wideband Near-Field Beamfocusing. WCNC (2024)
Akram Najjar, Mohammed El-Absi, Thomas Kaiser
Hybrid Delay-Phase Precoding in Wideband UM-MIMO Systems Under True Time Delay and Phase Shifter Hardware Limitations. IEEE Trans. Wirel. Commun. 23 (7) (2024)
Andreas Prokscha, Aman Batra, Sabisan Santhakumaran, Julian Fabricius, Elsa Andrea Kirchner, Thomas Kaiser
Multifaceted Free-Space Tissue Sensing up to 100 GHz. IEEE Access 12 (2024)
Simon Häger, Akram Najjar, Caner Bektas, Dien Lessy, Mohammed El-Absi, Fawad Sheikh, Stefan Boecker, Thomas Kaiser, Christian Wietfeld
Phase-Based Breathing Rate Monitoring in Patient Rooms Using 6G Terahertz Technology. CoRR (2023)
Jahangir Alam, Maher Khaliel, Feng Zheng, Klaus Solbach, Thomas Kaiser
Clutter Effect Investigation on Co-Polarized Chipless RFID Tags and Mitigation Using Cross-Polarized Tags, Analytical Model, Simulation, and Measurement. Sensors 23 (17) (2023)
Viet Thuy Vu, Yevhen Ivanenko, Aman Batra, Thomas K. Sjögren, Mats I. Pettersson, Thomas Kaiser
Implementing Backprojection at Base Station for Precise Localization in Indoor Environment. RIVF (2023)
Jahangir Alam, Maher Khaliel, Ahmed El-Awamry, Feng Zheng, Klaus Solbach, Thomas Kaiser
A Mathematical Framework, Simulation, and Measurement of Harmonic Identification Systems. IEEE Access 11 (2023)
Akram Najjar, Mohammed El-Absi, Thomas Kaiser
Joint Iterative Delay-Phase Precoding for THz UM-MIMO with Finite-Resolution and Limited-Range True Time Delay. ICC (2023)
Mohammed El-Absi, Ali Alhaj Abbas, Deeb Tubail, Furkan Ilgac, Ashraf Abuelhaija, Yamen Zantah, Salama Ikki, Aydin Sezgin, Thomas Kaiser
Path Loss Modeling of RFID Backscatter Channels With Reconfigurable Intelligent Surface: Experimental Validation. IEEE Access 11 (2023)
Aman Batra, Fawad Sheikh, Maher Khaliel, Michael Wiemeler, Diana Göhringer, Thomas Kaiser
Object Recognition in High-Resolution Indoor THz SAR Mapped Environment. Sensors 22 (10) (2022)
Viet Thuy Vu, Mats I. Pettersson, Aman Batra, Thomas Kaiser
Fourier Transform of SAR Data Cube and 3-D Range Migration Algorithm. IEEE Trans. Aerosp. Electron. Syst. 58 (3) (2022)
Ali Alhaj Abbas, Yamen Zantah, Ashraf Abuelhaija, Thomas Kaiser
Millimeter-Wave Retro-Directive Frequency Coded Lens by Curved One-Dimensional Photonic Crystal Resonator. IEEE Access 10 (2022)
Yevhen Ivanenko, Viet Thuy Vu, Aman Batra, Thomas Kaiser, Mats I. Pettersson
Interpolation Methods with Phase Control for Backprojection of Complex-Valued SAR Data. Sensors 22 (13) (2022)
Mohamed Haj Hassan, Benedikt Sievert, Jan Taro Svejda, Ali Alhaj Abbas, Alejandro Jiménez-Sáez, Aya Mostafa Ahmed, Martin Schüßler, Andreas Rennings, Klaus Solbach, Thomas Kaiser, Rolf Jakoby, Aydin Sezgin, Daniel Erni
OAM Mode Order Conversion and Clutter Rejection With OAM-Coded RFID Tags. IEEE Access 8 (2020)
Deeb Tubail, Mohammed El-Absi, Anas M. Salhab, Salama Ikki, Salam A. Zummo, Thomas Kaiser
Physical layer security of interference aligned mixed RF/unified-FSO relaying network. IET Commun. 14 (14) (2020)
Aman Batra, Mohammed El-Absi, Michael Wiemeler, Diana Göhringer, Thomas Kaiser
Indoor THz SAR Trajectory Deviations Effects and Compensation With Passive Sub-mm Localization System. IEEE Access 8 (2020)
Jahangir Alam, Maher Khaliel, Abdelfattah Fawky, Ahmed El-Awamry, Thomas Kaiser
Frequency-Coded Chipless RFID Tags: Notch Model, Detection, Angular Orientation, and Coverage Measurements. Sensors 20 (7) (2020)
Dilyan Damyanov, Aman Batra, Benedikt Friederich, Thomas Kaiser, Thorsten Schultze, Jan C. Balzer
High-Resolution Long-Range THz Imaging for Tunable Continuous-Wave Systems. IEEE Access 8 (2020)
Mohammed El-Absi, Feng Zheng, Ashraf Abuelhaija, Ali Alhaj Abbas, Klaus Solbach, Thomas Kaiser
Indoor Large-Scale MIMO-Based RSSI Localization with Low-Complexity RFID Infrastructure. Sensors 20 (14) (2020)
Aman Batra, Yamen Zantah, Viet Thuy Vu, Michael Wiemeler, Mats I. Pettersson, Diana Goehringer, Thomas Kaiser
Experimental Analysis of High Resolution Indoor THz SAR Imaging. WSA (2020)
Mohammed El-Absi, Ali Alhaj Abbas, Ashraf Abuelhaija, Klaus Solbach, Thomas Kaiser
Chipless RFID Infrastructure Based Self-Localization: Testbed Evaluation. IEEE Trans. Veh. Technol. 69 (7) (2020)
Yamen Zantah, Mai Alissa, Theo Kreul, Thomas Kaiser
Ultra-wideband Multipath Channel Characterization at 300 GHz. WSA (2020)
Mai Alissa, Benedikt Friederich, Fawad Sheikh, Andreas Czylwik, Thomas Kaiser
Experimental Investigation of Terahertz Scattering: A Study of Non-Gaussianity and Lateral Roughness Influence. IEEE Access 8 (2020)
Daniel Peethala, Thomas Kaiser, A. J. Han Vinck
Reliability Analysis of Centralized Radio Access Networks in Non-Line-of-Sight and Line-of-Sight Scenarios. IEEE Access 7 (2019)
Yanling Chen, Feng Zheng, Thomas Kaiser, A. J. Han Vinck
An Information-Theoretic Approach to the Chipless RFID Tag Identification. IEEE Access 7 (2019)
Nidal Zarifeh, Yamen Zantah, Yuan Gao, Thomas Kaiser
Full-Duplex Femto Base-Station With Antenna Selection: Experimental Validation. IEEE Access 7 (2019)
Mai Alissa, Theo Kreul, Thomas Kaiser
The Effect of Rough Surface Statistics on Diffuse Scattering at Terahertz Frequencies. EuCNC (2019)
Deeb Tubail, Mohammed El-Absi, Salama S. Ikki, Wessam Mesbah, Thomas Kaiser
Artificial Noise-Based Physical-Layer Security in Interference Alignment Multipair Two-Way Relaying Networks. IEEE Access 6 (2018)
Yuan Gao, A. J. Han Vinck, Thomas Kaiser
Massive MIMO Antenna Selection: Switching Architectures, Capacity Bounds, and Optimal Antenna Selection Algorithms. IEEE Trans. Signal Process. 66 (5) (2018)
Mohammed El-Absi, Ali Alhaj Abbas, Ashraf Abuelhaija, Feng Zheng, Klaus Solbach, Thomas Kaiser
High-Accuracy Indoor Localization Based on Chipless RFID Systems at THz Band. IEEE Access 6 (2018)
Daniel Peethala, Nidal Zarifeh, Thomas Kaiser
Probability of coverage based analysis of distributed antenna system and its implementation on LTE based real-time-testbed. ICUMT (2017)
Ahmed El-Awamry, Maher Khaliel, Abdelfattah Fawky, Thomas Kaiser
Adaptive spectrum scanning techniques for reducing the identification time of the frequency coded chipless RFID system. Trans. Emerg. Telecommun. Technol. 28 (11) (2017)
Abdelfattah Fawky, Ahmed El-Awamry, Maher Khaliel, Thomas Kaiser
Novel notch detection techniques for Frequency Coded chipless RFID. ICNSC (2017)
Ali A. Esswie, Mohammed El-Absi, Octavia A. Dobre, Salama Ikki, Thomas Kaiser
Spatial Channel Estimation-Based FDD-MIMO Interference Alignment Systems. IEEE Wirel. Commun. Lett. 6 (2) (2017)
Ahmed El-Awamry, Abdelfattah Fawky, Maher Khaliel, Thomas Kaiser
A novel adaptive spectrum scanning technique for reducing the identification time of the UWB chipless RFID system. ICNSC (2017)
Ali A. Esswie, Mohammed El-Absi, Octavia A. Dobre, Salama Ikki, Thomas Kaiser
A novel FDD massive MIMO system based on downlink spatial channel estimation without CSIT. ICC (2017)
Deeb Tubail, Mohammed El-Absi, Salama Ikki, Wessam Mesbah, Thomas Kaiser
Secure Interference Alignment Based Multiuser Relay System Using Artificial Noise. GLOBECOM (2017)
Yuan Gao, Maher Khaliel, Feng Zheng, Thomas Kaiser
Rotman Lens Based Hybrid Analog-Digital Beamforming in Massive MIMO Systems: Array Architectures, Beam Selection Algorithms and Experiments. IEEE Trans. Veh. Technol. 66 (10) (2017)
Maher Khaliel, Abdelfattah Fawky, Ahmed El-Awamry, Abd-Elhady Mahmoud, Thomas Kaiser
Printable, high coding capacity chipless RFID tags for low-cost item tagging. ICNSC (2017)
Mohamed S. Abouzeid, Feng Zheng, Jesús Gutiérrez, Thomas Kaiser, Rolf Kraemer
A novel beamforming algorithm for massive MIMO chipless RFID systems. WTS (2017)
Mohammed El-Absi, Mohamed El-Hadidy, Thomas Kaiser
A distributed interference alignment algorithm using min-maxing strategy. Trans. Emerg. Telecommun. Technol. 28 (1) (2017)
Wei Jiang, Thomas Kaiser, A. J. Han Vinck
A Robust Opportunistic Relaying Strategy for Co-Operative Wireless Communications. IEEE Trans. Wirel. Commun. 15 (4) (2016)
Sundar Daniel V. Peethala, Theo Kreul, Thomas Kaiser
Real-time Testbed for Validating Distributed Antenna Scenarios. WSA (2016)
Kiattisak Maichalernnukul, Feng Zheng, Thomas Kaiser
Performance analysis of a MIMO-RFID system in Nakagami-m fading channels. Ann. des Télécommunications 71 (3-4) (2016)
Yuan Gao, Maher Khaliel, Thomas Kaiser
Wideband hybrid analog-digital beamforming massive MIMO systems based on Rotman lens. ICCS (2016)
Mohamed El-Hadidy, Ahmed El-Awamry, Abdelfattah Fawky, Maher Khaliel, Thomas Kaiser
Real-world testbed for multi-tag UWB chipless RFID system based on a novel collision avoidance MAC protocol. Trans. Emerg. Telecommun. Technol. 27 (12) (2016)
Mohammed El-Absi, Savitri Galih, Marc Hoffmann, Mohamed El-Hadidy, Thomas Kaiser
Antenna Selection for Reliable MIMO-OFDM Interference Alignment Systems: Measurement-Based Evaluation. IEEE Trans. Veh. Technol. 65 (5) (2016)
Yuan Gao, Thomas Kaiser
Antenna selection in massive MIMO systems: Full-array selection or subarray selection? SAM (2016)
Feng Zheng, Thomas Kaiser
Adaptive Aloha anti-collision algorithms for RFID systems. EURASIP J. Embed. Syst. 2016 (2016)
Trung Thanh Nguyen, Hanwen Cao, Theo Kreul, Thomas Kaiser
A multi-channel spectrum sensing scheme with filter bank realization for LTE signals. WOWMOM (2015)
Ahmed El-Awamry, Maher Khaliel, Abdelfattah Fawky, Mohamed El-Hadidy, Thomas Kaiser
Novel notch modulation algorithm for enhancing the chipless RFID tags coding capacity. IEEE RFID (2015)
Yuan Gao, Wei Jiang, Thomas Kaiser
Bidirectional branch and bound based antenna selection in massive MIMO systems. PIMRC (2015)
Trung Thanh Nguyen, Theo Kreul, Thomas Kaiser
An enhanced spectrum sensing algorithm with maximum ratio combination of spectral correlation. EUSIPCO (2015)
Abdelfattah Fawky, Maher Khaliel, Ahmed El-Awamry, Mohamed El-Hadidy, Thomas Kaiser
Novel Pseudo-Noise coded chipless RFID system for clutter removal and tag detection. IEEE RFID (2015)
Mohammed El-Absi, Musbah Shaat, Faouzi Bader, Thomas Kaiser
Interference Alignment With Frequency-Clustering for Efficient Resource Allocation in Cognitive Radio Networks. IEEE Trans. Wirel. Commun. 14 (12) (2015)
Trung Thanh Nguyen, Ammar Kabbani, Sundar Peethala, Theo Kreul, Thomas Kaiser
Experiments on spectrum sensing algorithms of pilot-added OFDM signals with a cognitive LTE-A system. CAMAD (2015)
Mohammed El-Absi, Ali Ramadan Ali, Mohamed El-Hadidy, Thomas Kaiser
Energy-Efficient Resource Allocation Based on Interference Alignment in MIMO-OFDM Cognitive Radio Networks. CrownCom (2015)
Ammar Kabbani, Ali Ramadan Ali, Hanwen Cao, Asim Burak Güven, Yuan Gao, Sundar Peethala, Thomas Kaiser
Implementation Aspects of a DSP-Based LTE Cognitive Radio Testbed. CrownCom (2015)
Hanwen Cao, Wei Jiang, Thomas Kaiser
Parallel In-band signal detection with self-interference suppression for cognitive LTE. WCNC Workshops (2014)
Wei Jiang, Hanwen Cao, Michael Wiemeler, Thomas Kaiser
Achieving high reliability in Aerial-Terrestrial networks: Opportunistic space-time coding. EuCNC (2014)
Wei Jiang, Hanwen Cao, Thomas Kaiser
Opportunistic space-time coding to exploit cooperative diversity in fast-fading channels. ICC (2014)
Wei Jiang, Hanwen Cao, Thomas Kaiser
Power optimal allocation in decode-and-forward opportunistic relaying. WCNC (2014)
Ramez Askar, Thomas Kaiser, Benjamin Schubert, Thomas Haustein, Wilhelm Keusgen
Active self-interference cancellation mechanism for full-duplex wireless transceivers. CrownCom (2014)
Mohammed El-Absi, Musbah Shaat, Faouzi Bader, Thomas Kaiser
Power loading and spectral efficiency comparison of MIMO OFDM/FBMC for interference alignment based cognitive radio systems. ISWCS (2014)
Montaha Bouezzeddine, Werner L. Schroeder, Thomas Kaiser
On the design of MIMO antennas for cognitive radio systems. CCS (2014)
Mohammed El-Absi, Thomas Kaiser
Optimal resource allocation based on interference alignment for OFDM and FBMC MIMO cognitive radio systems. EuCNC (2014)
Wei Jiang, Hanwen Cao, Leonardo Goratti, Michael Wiemeler, Thomas Kaiser
Opportunistic relaying over Aerial-to-Terrestrial and Device-to-Device radio channels. ICC Workshops (2014)
Wei Jiang, Hanwen Cao, Thomas Kaiser
An MGF-Based Performance Analysis of Opportunistic Relay Selection with Outdated CSI. VTC Spring (2014)
Mohammed El-Absi, Musbah Shaat, Faouzi Bader, Thomas Kaiser
Interference alignment with frequency-clustering for efficient resource allocation in cognitive radio networks. GLOBECOM (2014)
Wei Jiang, Hanwen Cao, Thomas Kaiser
Analysis of generalized selection combining in cooperative networks with outdated CSI. WCNC (2014)
Kiattisak Maichalernnukul, Feng Zheng, Thomas Kaiser
A differential space-time coded RFID system. ICUMT (2014)
Ramez Askar, Nidal Zarifeh, Benjamin Schubert, Wilhelm Keusgen, Thomas Kaiser
I/Q Imbalance Calibration for Higher Self-Interference Cancellation Levels in Full-Duplex Wireless Transceivers. 5GU (2014)
Yue Wang, Michael Wiemeler, Feng Zheng, Weiming Xiong, Thomas Kaiser
Two-step hybrid self-localization using unsynchronized low-complexity anchors. ICL-GNSS (2013)
Waldemar Gerok, Jürgen Peissig, Thomas Kaiser
Study of the TDOA Assisted RSSD Localization with UWB in Real Indoor Environment. EW (2013)
Hanwen Cao, Wei Jiang, Tomaz Javornik, Michael Wiemeler, Trung Thanh Nguyen, Thomas Kaiser
Spectrum awareness scheme of the rapidly deployable eNodeB for unexpected and temporary events. CAMAD (2013)
Yue Wang, Feng Zheng, Michael Wiemeler, Weiming Xiong, Thomas Kaiser
Reference Selection for Hybrid TOA/RSS Linear Least Squares Localization. VTC Fall (2013)
Hanwen Cao, Wei Jiang, Trung Thanh Nguyen, Asim Burak Guven, Yue Wang, Yuan Gao, Animar Rabbani, Michael Wiemeler, Theo Kreul, Feng Zheng, Thomas Kaiser
The design of an LTE-A system enhanced with cognitive radio. EUSIPCO (2013)
Thomas Kaiser, Hanwen Cao, Wei Jiang, Feng Zheng
Cognitive Radio - A Current Snapshot and Some Thoughts on Commercialization for Future Cellular Systems. J. Signal Process. Syst. 73 (3) (2013)
Hanwen Cao, Wei Jiang, Thomas Kaiser
Multi-channel robust spectrum sensing with low-complexity filter bank realization. PIMRC (2013)
Hanwen Cao, Wei Jiang, Michael Wiemeler, Thomas Kaiser, Jürgen Peissig
A robust radio access technology classification scheme with practical considerations. PIMRC Workshops (2013)
Wei Jiang, Hanwen Cao, Trung Thanh Nguyen, Asim Burak Guven, Yue Wang, Yuan Gao, Ammar Kabbani, Michael Wiemeler, Theo Kreul, Feng Zheng, Thomas Kaiser
Key issues towards beyond LTE-Advanced systems with cognitive radio. SPAWC (2013)
Mohammed El-Absi, Mohamed El-Hadidy, Thomas Kaiser
Min-maxing interference alignment algorithm as a semidefinite programming problem. SPAWC (2013)
Waldemar Gerok, Jürgen Peissig, Thomas Kaiser
TDOA assisted RSSD based localization using UWB and directional antennas. CoRR (2013)
Hanwen Cao, Friederike Maier, Andreas Wilzeck, Thomas Kaiser
DSSS differential GMSK with space-time modulation for robust mobile data links. WCNC (2012)
Mohamed El-Hadidy, Mohammed El-Absi, Thomas Kaiser
Artificial diversity for UWB MB-OFDM Interference Alignment based on real-world channel models and antenna selection techniques. ICUWB (2012)
Waldemar Gerok, Jürgen Peissig, Thomas Kaiser
TDOA assisted RSSD localization in UWB. WPNC (2012)
Hieu Nguyen, Van-Duc Nguyen, Tien-Hoa Nguyen, Duyen Trung Ha, Thomas Kaiser
Performances analysis of vehicle-to-X communication systems. ISSPIT (2012)
Anggia Anggraini, Jürgen Peissig, Thomas Kaiser
Virtual MIMO in WiMAX relay system. ISSSE (2012)
Anggia Anggraini, Thi Chung Le, Jürgen Peissig, Thomas Kaiser
MIMO multi-user relay system. ISSSE (2012)
Mohammed El-Absi, Mohamed El-Hadidy, Thomas Kaiser
Antenna selection for Interference Alignment based on subspace Canonical Correlation. ISCIT (2012)
Feng Zheng, Thomas Kaiser
A Space-Time Coding Scheme for RFID MIMO Systems. EURASIP J. Embed. Syst. 2012 (2012)
Feng Zheng, Thomas Kaiser
A comparison of robustness between interference alignment and direct transmission. ISSSE (2012)
Van-Duc Nguyen, Quoc Khanh Dinh, Manh Hung Nguyen, Van Tien Pham, Claus Kupferschmidt, Thomas Kaiser, Truong Vu Bang Giang, Tien-Hoa Nguyen
A synchronization method for implementing an OFDM system based on the TMS320C6416 DSP. ICUIMC (2011)
Hanwen Cao, Zhao Zhao, Weitao Ni, Mohamed El-Hadidy, Thomas Kaiser
Measurement and ray-tracing of wideband indoor channel in UHF TV white space. CogART (2011)
Bamrung Tau Sieskul, Claus Kupferschmidt, Thomas Kaiser
Spatial Fading Correlation for Local Scattering: A Condition of Angular Distribution. IEEE Trans. Veh. Technol. 60 (3) (2011)
Zhao Zhao, Christoph Thein, Feng Zheng, Thomas Kaiser
Analysis of the influence of OFDM sidelobe interference on Femto rich systems. WiOpt (2011)
Kiattisak Maichalernnukul, Feng Zheng, Thomas Kaiser
UWB MIMO cooperative relay systems: BER analysis and relay regions. CISS (2010)

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Publication Activity (10 Years)

Top Topics

Top Venues

Thomas Kaiser