Stefan Schwarz

Associate Prof. Dipl.-Ing. Dr.techn.
Tel.: +43 1 58801 - 38985
Room: CG0416
Address: Gusshausstraße 25 / E389
1040 Wien


Stefan Schwarz (S’09-M’14-SM’19) received his BSc. in electrical engineering in 2007, his Dipl.-Ing. degree (MSc equivalent) in telecommunications engineering in 2009, and his Dr. techn. degree (Ph.D. equivalent) in technical sciences in 2013, all at TU Wien. In 2010 he received the honorary price of the Austrian Minister of Science and Research, for excellent graduates of scientific and artistic universities and in 2014 he received the INiTS award in the category Information and Communication Technologies for innovative scientific works with prospect for economic applicability. In 2019 he was promoted to Assistant Professor at TU Wien, following his habilitation within the scientific field of mobile communications.

From 2008 to 2014 Stefan Schwarz was working as a project assistant at the Mobile Communications group of Prof Markus Rupp at the Institute of Telecommunications of TU Wien, focusing on link and system level simulation of LTE/LTE-A networks and acting as one of the lead developers of the Vienna LTE Simulators. In 2012 he visited The University of Texas at Austin as research scholar, collaborating with Prof. Robert W. Heath, Jr. on limited feedback algorithms for distributed antenna systems. Between 2014 and 2016 he was employed as post-doctoral researcher (University Assistant) at the Institute of Telecommunications, leading contract research projects with General Motors on cellular assisted vehicular communications. Since 2016 he is the head of the Christian Doppler Laboratory for Dependable Wireless Connectivity for the Society in Motion. His research interests are located in the broad fields of wireless communications, signal processing and channel modeling. E-mail:

Research Topics

Christian Doppler Laboratory for Dependable Wireless Connectivity for the Society in Motion

  • LTE and 5G link and system level simulations
  • Single-user/multi-user limited feedback systems
  • Manifold signal processing
  • Performance investigations of cellular networks
  • Cellular networks for vehicular communications
  • Convex and non-convex optimization


  • 389.012 – Computer oriented projects
  • 389.139 – Bachelor Thesis and Seminar
  • 389.033 – International Seminar on Mobile Communications
  • 389.138 – Telecommunications
  • 389.193 – 5th Generation Wireless Technologies


Reproducible code:

Recursive CSI Quantization of Time-Correlated MIMO Channels by Deep Learning Classification, IEEE SPL 2020

Publications sorted by media from TU Wien database

Organized Workshops, Special Issues and Special Sessions:

System-Level Analysis and Optimization in Large-Scale Wireless Networks, European Signal Processing Conference, Sept. 2019

23rd International ITG Workshop on Smart Antennas WSA 2019, Vienna, April 24 to 26, 2019

Recent Advances in Link and System Level Analysis, Simulation and Experimentation for Mobile Wireless Communications, EURASIP Journal on Wireless Communications and Networking, 2018

System Level Optimization and Evaluation of 5G and Beyond Mobile Communications, European Signal Processing Conference, Sept. 2018

Signal Processing Challenges in 5G Mobile Communications, 25th European Signal Processing Conference (EUSIPCO’17), 28 August – 2 September 2017, Kos, Greece

1st International Workshop on Link and System Level Simulations (IWSLS2), July 1st 2016, Vienna, Austria

System Level Modeling in Wireless Communications, EURASIP Journal on Wireless Communications and Networking, 2015

System-level modelling and abstraction for 5G wireless communications, 12th International Symposium on Wireless Communication Systems (ISWCS’15), 25–28 August 2015, Brussels, Belgium

CD-Lab Related Presentations:

Presentations of the CD-Lab


  • Conference presentations:
    • LTE SU-MIMO feedback (WiAd 2010)
    • Linearized scheduling framework for LTE (Asilomar 2010)
    • Multi-user scheduler with variable fairness (ICC 2011)
    • MU-MIMO feedback for ZF beamforming (ICC 2012)
    • MU-MIMO in distributed antenna systems (GLOBECOM 2012)
    • Antenna Combiners for block-diagonalization with limited feedback and excess antennas (ICC 2013)
    • Subspace versus Eigenmode quantization for limited feedback block-diagonalization (ISCCSP 2014)
    • ML Estimation of Population Size when Observing Multiple Fill Levels in Slotted ALOHA (ICASSP 2015)
    • A Tensor LMS Algorithm (ICASSP 2015)
    • System Level Simulation of LTE MBSFN Networks with High Mobility Users (IWSSIP 2015)
    • Performance Evaluation of Low Complexity Double-Sided Massive MIMO Transceivers (CCNC 2016)
    • Gaussian Modeling of Spatially Correlated LOS/NLOS Maps for Mobile Communications (VTC 2016)
    • Limited Feedback based Double-Sided Full-Dimension MIMO for Mobile Backhauling (Asilomar SSC 2016)
    • Multicast Beamforming Capabilities of LTE MBSFN for V2X Communications (VTC Fall 2017)
    • Remote Radio Head Assignment and Beamforming in Dynamic Distributed Antenna Systems (ICC 2018)
    • Signal Outage Optimized Beamforming for MISO TWDP Fading Channels (PIMRC 2018)
    • Dynamic Distributed Antenna Systems: A Transitional Solution for CRAN Implementation (GLOBECOM 2018)
    • Grassmannian Product Codebooks for Limited Feedback FD-MIMO (JWCC 2019)
    • Dynamic Distributed Antenna Systems with Wireless mmWave Fronthaul (Asilomar SSC 2019)
  • Posters:
    • LTE SU-MIMO precoder feedback (WSA 2010)
    • Throughput bounds for LTE (SPAWC 2011)
    • LTE-A CSI feeback (SPAWC 2011)
    • MU-MIMO in LTE with adaptive CSI feedback (ICC 2012)
    • MU-MIMO in LTE with CSI feedback prediction and interpolation (EUSIPCO 2012)
    • Subspace quantization for limited feedback block-diagonalization (ICASSP 2013)
    • Maximum expected achievable rate combining for limited feedback block-diagonalization (ICASSP 2015)
    • Predictive quantization on the Stiefel manifold (ICASSP 2015)
    • Leakage-based multicast transmit beamforming (ICC 2015)
    • Convex optimization based geometric beamforming for FD-MIMO Arrays (Asilomar SSC 2016)
    • Outage-Based Admission Control for Multi-User MISO Transmission with Imperfect CSIT (VTC-Fall 2017)
  • Others:
    • Wireless Communications Seminar (27.03.2014)
    • LTE Basics (13.10.2015 – Brno)
    • Downlink Link Level Simulator Overview (14.10.2015 – Brno)
    • Research on 5G and Beyond at TU Wien (15.05.2018 – OVE IT Kolloquium)
    • Short course on Dependable Wireless Connectivity at the 3rd Wireless Silk Road at Beijing Jiaotong University, China (09.09.2019 – 12.09.2019)