dr. S. Safapourhajari (Siavash)

I was born in a small town in the north of Iran. I received my BSc. and MSc. degrees from University of Tehran both in Electrical Engineering. My Master thesis was focused on clock and data recovery schemes for high speed serial links. During my Master studies (2012), I also did a six month DAAD funded research collaboration with University of Rostock, Germany, on the optical Networks on Chip. In 2015, I joined the Computer Architecture for Embedded Systems (CAES) research group, University of Twente, as a PhD candidate. During my PhD I investigated signal processing in digital receivers for UNB communications and Low Power Wide Area Networks (LPWANs). After my PhD in 2020, I joined the Radio Systems (RS) group as an Assistant Professor.

My general research area is signal processing for communication systems including low power IoT and enabling technologies for 5G and beyond such as (ultra) massive MIMO, cell-free massive MIMO, mmWave/THz and UAV assisted communications. Furthermore, I am interested in the application of Artificial Intelligence (AI) and learning algorithms in future generations of wireless communications (specially in PHY layer). I enjoy investigating signal processing algorithms as well as their efficient implementation while considering the effects/requirements of RF front-end and digital hardware.

Engineering & Materials Science

# Communication
# Demodulation
# Demodulators
# Discrete Fourier Transforms
# Frequency Modulation
# Phase Modulation
# Phase Shift Keying
# Synchronization

Safapourhajari, S. (2020). Frequency Offset Tolerant Demodulators for UNB Communications. Ipskamp Printing. https://doi.org/10.3990/1.9789036550864

Safapourhajari, S. , & Kokkeler, A. B. J. (2020). On the Low Complexity Implementation of the DFT-Based BFSK Demodulator for Ultra-Narrowband Communications. IEEE Access, 8, 146666-146682. [9154670]. https://doi.org/10.1109/ACCESS.2020.3013986

Safapourhajari, S. , & Kokkeler, A. B. J. (2019). Low Complexity Synchronization for Offset Tolerant DFT-Based BFSK Demodulator. In 2019 IEEE 20th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) [8815394] IEEE. https://doi.org/10.1109/SPAWC.2019.8815394

Safapourhajari, S. , & Kokkeler, A. B. J. (2019). Offset Tolerant Demodulator for Frequency/Phase Modulation in Time-Varying Channel. In 2019 IEEE Wireless Communications and Networking Conference (WCNC) [8886086] (IEEE Wireless Communications and Networking Conference, WCNC; Vol. 2019). IEEE. https://doi.org/10.1109/WCNC.2019.8886086

Safapourhajari, S. , & Kokkeler, A. B. J. (2018). Demodulation of Double Differential PSK in Presence of Large Frequency Offset and Wide Filter. In 2018 IEEE 87th Vehicular Technology Conference (VTC Spring) IEEE. https://doi.org/10.1109/VTCSpring.2018.8417526

Safapourhajari, S. , & Kokkeler, A. B. J. (2018). Frequency Offset Tolerant Demodulation for Low Data Rate and Narrowband Wireless Sensor Node. In 2017 11th International Conference on Signal Processing and Communication Systems (ICSPCS) https://doi.org/10.1109/ICSPCS.2017.8270451

Bachelor

Electrical Engineering

Master

Electrical Engineering

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.