Dr.-Ing. Lars Häring

Akademischer Oberrat

Anschrift:                                                                  Raum:       BA 245
Universität Duisburg-Essen                                    Telefon:    +49 203 37 93366
Nachrichtentechnische Systeme                           Fax:            +49 203 37 92902
Bismarckstrassse 81                                                E-Mail:       haering@nts.uni-due.de
47057 Duisburg


Forschungsthemen: 
Synchronization in Multiuser OFDM Systems
Filterbank Multicarrier Systems
MIMO Systems
Adaptive Transmission Systems
Signaling-Assisted / Automatic Modulation Classification in Wireless Communication Systems
Headphone Surround Monitoring Using Dynamic Binaural Synthesis

Publikationen

    2024

  • Kara, Yusuf Can; Alchami, Nabil; Kolpatzeck, Kevin; Husain, Bashar; Häring, Lars; Czylwik, Andreas
    Linewidth estimation of optical sources used for THz signal generation
    In: Proceedings of the 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024 / 49th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2024; 01-06 September 2024; Perth, Australia / Institute of Electrical and Electronics Engineers (IEEE) (Hrsg.) 2024
    Online Volltext: dx.doi.org/

    • 2023

  • Husain, Bashar; Kolpatzeck, Kevin; Frömming, Alexander; Häring, Lars; Czylwik, Andreas
    Spectrally Efficient Optoelectronic Wireless Terahertz Communication System
    In: 2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) / 48th International Conference on Infrared, Millimeter, and Terahertz Waves ; IRMMW-THz 2023 ; 17 -22 September 2023, Montreal, Quebec, Canada / Cooke, David G. (Hrsg.) 2023
    Online Volltext: dx.doi.org/

    • 2022

  • Frömming, Alexander; Häring, Lars; Czylwik, Andreas
    Optimizing Adaptive Modulation for Symmetrically Clipped Band-Limited DCO-OFDM
    In: 2022 32nd International Telecommunication Networks and Applications Conference (ITNAC) / 32nd International Telecommunication Networks and Applications Conference (ITNAC) ; 30 November - 2 December 2022, Wellington, New Zealand / Welch, Ian (Hrsg.) 2022, S. 341 - 346
    Online Volltext: dx.doi.org/
  • Häring, Lars
    Deep Learning-Assisted Automatic Modulation Classification in Adaptive FBMC/OQAM Systems
    In: 2022 IEEE 33rd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) / 33rd Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications ; PIMRC ; September 12-15, 2022, Virtual Conference / Mizutani, Keiichi; Institute of Electrical and Electronics Engineers (Hrsg.) 2022, S. 994 - 999
    Online Volltext: dx.doi.org/
  • Aldoseri, Hamad Fadhel; Häring, Lars; Czylwik, Andreas
    Analysis of ADC Quantization and Clipping Effects on CDMA-OQAM-OFDM-Based WSAN
    In: International Journal of Interdisciplinary Telecommunications and Networking Jg. 14 (2022) Nr. 1, 62
    Online Volltext: dx.doi.org/

    • 2021

  • Husain, Bashar; Mohamed, Hazem; Häring, Lars; Czylwik, Andreas
    Deep Learning-Based Multi-Tone Interference Suppression for Short Polar Codes
    In: 2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring): Proceedings / Vehicular Technology Conference ; VTC2021 ; 25-28 April 2021, Virtual Event 2021 9448897
    Online Volltext: dx.doi.org/
  • Frömming, Alexander; Häring, Lars; Czylwik, Andreas
    Spectral properties of clipping noise
    In: Mathematics Jg. 9 (2021) Nr. 20, 2592
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Aldoseri, Hamad Fadhel; Häring, Lars; Czylwik, Andreas
    On the Reliability of Spread FBMC Wireless Sensor Networks for Off-Tone Jamming
    In: IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) 2021 / IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC2021), 13-16 Sept. 2021, virtual 2021, S. 1329 - 1333
    Online Volltext: dx.doi.org/
  • Liu, Xuan; Kolpatzeck, Kevin; Häring, Lars; Balzer, Jan C.; Czylwik, Andreas
    Beam Steering for Terahertz Time-Domain Spectroscopy Using Optical Ring Resonators
    In: 2021 46th International Conference on Infrared, Millimeter, and Terahertz Waves: IRMMW-THz 2021 / 46th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) ; August 30 - September 3, 2021, Chengdu, China / Liu, Shenggang (Hrsg.) 2021
    Online Volltext: dx.doi.org/
  • Kolpatzeck, Kevin; Liu, Xuan; Häring, Lars; Balzer, Jan C.; Czylwik, Andreas
    Ultra-High Repetition Rate Terahertz Time-Domain Spectroscopy for Micrometer Layer Thickness Measurement
    In: Sensors Jg. 21 (2021) Nr. 16, 5389
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)

    • 2020

  • Aldoseri, Hamad Fadhel; Häring, Lars; Czylwik, Andreas
    A reliable industrial wireless sensor and actor network based on CDMA-OQAM-OFDM
    In: 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications / PIMRC 2020; Virtual, London; United Kingdom; 31 August - 3 September 2020 2020, S. 9217274
    Online Volltext: dx.doi.org/
  • Liu, Xuan; Kolpatzeck, Kevin; Häring, Lars; Balzer, Jan C.; Czylwik, Andreas
    Wideband beam steering concept for terahertz time-domain spectroscopy: Theoretical considerations
    In: Sensors Jg. 20 (2020) Nr. 19, S. 5568
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Kolpatzeck, Kevin; Liu, Xuan; Tybussek, Kai-Henning; Haring, Lars; Zander, Marlene; Rehbein, Wolfgang; Moehrle, Martin; Czylwik, Andreas; Balzer, Jan C.
    Analytical Modeling of Terahertz Time-Domain Spectroscopy with Monolithic Mode-Locked Laser Diodes
    In: 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) / International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 8-13 Nov. 2020, Buffalo, NY, USA 2020, S. 811 - 812
    Online Volltext: dx.doi.org/
  • Kolpatzeck, Kevin; Dedic, Muhamed; Kramer, Peter; Liu, Xuan; Cherniak, Vladyslav; Tybussek, Kai-Henning; Zander, Marlene; Haring, Lars; Balzer, Jan C.; Czylwik, Andreas
    Enhancement of Terahertz Spectra by Model-Driven Spectral Shaping of a Mode-Locked Laser Diode in a Terahertz Time-Domain Spectroscopy System
    In: 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) / International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 8-13 Nov. 2020, Buffalo, NY, USA 2020, S. 84 - 85
    Online Volltext: dx.doi.org/
  • Liu, Xuan; Geng, C.; Guo, X.; Kolpatzeck, Kevin; Haring, L.; Balzer, Jan C.; Czylwik, Andreas
    Design and Characterization of 3D Printed Polymer Terahertz Multi-Mode Interference Couplers
    In: 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) / International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 8-13 Nov. 2020, Buffalo, NY, USA 2020, S. 538 - 539
    Online Volltext: dx.doi.org/
  • Liu, Xuan; Samfaß, Lisa; Kolpatzeck, Kevin; Häring, Lars; Balzer, Jan C.; Hoffmann, Martin; Czylwik, Andreas
    Terahertz beam steering concept based on a MEMS-reconfigurable reflection grating
    In: Sensors Jg. 20 (2020) Nr. 10, S. 2874
    Online Volltext: dx.doi.org/ Online Volltext (Open Access)
  • Risling, Richard; Häring, Lars; Czylwik, Andreas
    Sensitivity of OFDM and FBMC to interference
    In: Proceedings of the International Conference on Wireless Communication and Sensor Networks / icWCSN 2020; Virtual, Online, Poland; 13 - 15 May 2020 2020, S. 19 - 23
    Online Volltext: dx.doi.org/
  • Kolpatzeck, Kevin; Liu, Xuan; Tybussek, Kai-Henning; Häring, Lars; Zander, Marlene; Rehbein, Wolfgang; Moehrle, Martin; Czylwik, Andreas; Balzer, Jan C.
    System-theoretical modeling of terahertz time-domain spectroscopy with ultra-high repetition rate mode-locked lasers
    In: Optics Express (OpEx) Jg. 28 (2020) Nr. 11, S. 16935 - 16950
    Online Volltext: dx.doi.org/ (Open Access)

    • 2019

  • Liu, Xuan; Kolpatzeck, Kevin; Friederich, Benedikt; Damyanov, Dilyan; Häring, Lars; Schultze, Thorsten; Balzer, Jan C.; Czylwik, Andreas
    Spectroscopic characterization of 3D printed THz rectangular polymer waveguides
    In: International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz: Proceedings / 44th International Conference on Infrared, Millimeter, and Terahertz Waves IRMMW-THz 2019, 01.-06.09.2019, Paris 2019
    Online Volltext: dx.doi.org/
  • Bischoff, Daniel; Berninger, Harald; Knapp, Steffen; Meuser, Tobias; Richerzhagen, Björn; Häring, Lars; Czylwik, Andreas
    Safety-relevant V2X beaconing in realistic and scalable heterogeneous radio propagation fading channels
    In: VEHITS 2019: proceedings of the 5th International Conference on Vehicle Technology and Intelligent Transport Systems / 5th International Conference on Vehicle Technology and Intelligent Transport Systems : Heraklion, Crete, Greece, May 3-5, 2019 2019, S. 404 - 411
    Online Volltext: dx.doi.org/ (Open Access)
  • Häring, Lars
    Signaling-Free Bit and Power Loading in MIMO OFDM Systems
    In: International Congress on Ultra Modern Telecommunications and Control Systems and Workshops (ICUMT) / ICUMT 2019, Ocober 28-30 2019, Ireland 2019, S. 8970739
    Online Volltext: dx.doi.org/
  • Kolpatzeck, Kevin; Liu, Xuan; Friederich, Benedikt; Damyanov, Dilyan; Häring, Lars; Schultze, Thorsten; Balzer, Jan C.; Czylwik, Andreas
    Wideband radiation pattern measurement of terahertz antenna-integrated photodiodes by frequency-domain spectroscopy
    In: 2nd International Workshop on Mobile Terahertz Systems / IWMTS 2019; Bad Neuenahr; Germany; 1 - 3 July 2019 2019, S. 8823782
    Online Volltext: dx.doi.org/
  • Kolpatzeck, Kevin; Liu, Xuan; Nellen, S.; Friederich, Benedikt; Damyanov, Dilyan; Häring, Lars; Schultze, Thorsten; Globisch, Björn; Balzer, Jan C.; Czylwik, Andreas
    Wideband radiation pattern simulation and measurement of a photodiode-based continuous-wave THz emitter
    In: International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz: Proceedings / 44th International Conference on Infrared, Millimeter, and Terahertz Waves IRMMW-THz 2019, 01.-06.09.2019, Paris 2019
    Online Volltext: dx.doi.org/
  • Liu, Xuan; Kolpatzeck, Kevin; Öztürk, A.; Friederich, Benedikt; Damyanov, Dilyan; Häring, Lars; Schultze, Thorsten; Balzer, Jan C.; Czylwik, Andreas
    Wideband characterization of 3D printed THz rectangular dielectric waveguides by THz frequency-domain spectroscopy
    In: 2nd International Workshop on Mobile Terahertz Systems / IWMTS 2019; Bad Neuenahr; Germany; 1 - 3 July 2019 2019, S. 8823720
    Online Volltext: dx.doi.org/

    • 2018

  • Kolpatzeck, Kevin; Liu, Xuan; Häring, Lars; Czylwik, Andreas
    System-Theoretical Modeling and Analysis of Phase Control in a Photonically Steered Terahertz Phased Array Transmitter
    In: 2018 1st International Workshop on Mobile Terahertz Systems, IWMTS 2018 / 1st International Workshop on Mobile Terahertz Systems, IWMTS 2018, Duisburg, Germany, 2 July 2018 through 4 July 2018 2018
    Online Volltext: dx.doi.org/
  • Liu, Xuan; Kolpatzeck, Kevin; Häring, Lars; Czylwik, Andreas
    Experimental Validation of a Phase Control Concept for Photonically Steered Terahertz Phased Array Transmitters at Microwave Frequencies
    In: 2018 1st International Workshop on Mobile Terahertz Systems, IWMTS 2018 / 1st International Workshop on Mobile Terahertz Systems, IWMTS 2018, Duisburg, Germany, 2 July 2018 through 4 July 2018 2018
    Online Volltext: dx.doi.org/
  • Häring, Lars
    SINR-based adaptive MIMO FBMC/OQAM transmission with automatic modulation classification
    In: Transactions on Emerging Telecommunications Technologies Jg. 29 (2018) Nr. 12, S. e3541
    Online Volltext: dx.doi.org/
  • Häring, Lars
    Intrinsic interference-Aware adaptive FBMC transmission with automatic modulation classification
    In: IoT for sustainable reef / 17th International Symposium on Communications and Information Technologies (ISCIT) took place 25-27 September 2017 in Cairns, Australia 2018, S. 1 - 6
    Online Volltext: dx.doi.org/

    • 2016

  • Kolpatzeck, Kevin; Häring, Lars; Czylwik, Andreas
    Phase control in photonically steered phased array transmitters by optical homodyne detection
    In: Proceedings of the European Microwave Conference / European Microwave Conference, 4. - 6. Oct. 2016, London, UK 2016, S. 1095 - 1098
    Online Volltext: dx.doi.org/
  • Häring, Lars
    Adaptive OQAM-OFDM transmission with MAP-based modulation classification in TDD systems
    In: European Wireless 2016: Proceedings / 22th European Wireless Conference 18-20 May 2016, University of Oulu, Finland 2016
  • Kolpatzeck, Kevin; Häring, Lars; Czylwik, Andreas
    Power budget analysis and optimization of photonic beamforming concepts for terahertz transmitters
    In: 2016 German Microwave Conference (GeMiC 2016): Proceedings of a meeting held 14-16 March 2016, Bochum, Germany / 10th German Microwave Conference, GeMiC 2016, March 14-16 in Bochum, Germany / Institute of Electrical and Electronics Engineers (IEEE) (Hrsg.) 2016, S. 7 - 10
    Online Volltext: dx.doi.org/

    • 2014

  • Häring, Lars; Kisters, Christian
    Influence of imperfect reciprocity on MAP-based automatic modulation classification for adaptive OFDM systems in TDD mode
    In: Proceedings of OFDM 2014 / 18th International OFDM Workshop 2014 (InOWo'14) : 27-28 Aug. 2014 2014, S. 155 - 160
  • Häring, Lars; Kisters, Christian
    Influence of imperfect reciprocity on MAP-based automatic modulation classification for adaptive OFDM systems in TDD mode
    In: Proceedings of the 18th International OFDM-Workshop / 18th International OFDM-Workshop(InOWo), Duisburg, Aug. 2014 2014
  • Häring, Lars; Kisters, Christian
    Influence of imperfect reciprocity on MAP-based automatic modulation classification for adaptive OFDM systems in TDD mode
    In: Proceedings of the 18th International OFDM Workshop 2014 / InOWo 2014; Essen; Germany; 27 - 28 August 2014 2014, S. 155 - 160
  • Kisters, Christian; Häring, Lars; Czylwik, Andreas
    Demonstrator for real-time OFDM transmission with bit loading in TDD systems
    In: Proceedings of the 18th International OFDM Workshop 2014 (InOWo'14) / 18th International OFDM Workshop 2014 (InOWo'14) : 27 - 28 August 2014 / Czylwik, Andreas (Hrsg.) 2014, S. 169 - 173
  • Schlamann, M.; Häring, Lars; Czylwik, Andreas
    Lattice filter-based frequency-domain equalizer with multiple frequency offset compensation for MIMO SDMA OFDM systems
    In: Proceedings of the 18th International OFDM Workshop 2014 (InOWo'14) / InOWo 2014, Essen, Germany, 27 - 28 August 2014 2014, S. 179 - 184
  • Schulz, N.; Häring, Lars; Czylwik, Andreas
    Performance comparison of MRC in cyclic prefix OFDM and OQAM OFDM
    In: Proceedings of the 18th International OFDM Workshop 2014 (InOWo'14) / 18th International OFDM Workshop 2014 (InOWo'14) : 27 - 28 August 2014; Czylwik, Andreas 2014, S. 17 - 22
  • Häring, Lars; Kisters, Christian
    Signaling-assisted MAP-based modulation classification in adaptive MIMO OFDM systems
    In: 2014 IEEE 80th Vehicular Technology Conference (VTC 2014-Fall): Vancouver, British Columbia, Canada, 14 - 17 September 2014 ; proceedings / IEEE Vehicular Technology Conference ; VTC ; 14 - 17 September 2014, Vancouver 2014, S. 6966177
    Online Volltext: dx.doi.org/

    • 2013

  • Häring, Lars; Kisters, Christian
    Map-based automatic modulation classification for wireless adaptive OFDM systems
    In: IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2013: Proceedings / IEEE International Conference on Acoustics, Speech and Signal Processing : Vancouver, British Columbia, Canada, 26 - 31 May 2013 2013, S. 5204 - 5208
    Online Volltext: dx.doi.org/
  • Häring, Lars; Kisters, Christian
    Constraint-based adaptive OFDM transmission with signaling-assisted modulation classification
    In: Conference Record - Asilomar Conference on Signals, Systems and Computers / 47th Asilomar Conference on Signals, Systems and Computers; Pacific Grove, CA; United States; 3 November 2013 through 6 November 2013 2013
    Online Volltext: dx.doi.org/
  • Häring, Lars; Kisters, Christian
    Joint optimization of bit loading and modulation classification in wireless OFDM systems
    In: IEEE 9th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), 2013 / 9th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), 2013 : 7 - 9 Oct. 2013, Lyon, France 2013, S. 402 - 407
    Online Volltext: dx.doi.org/
  • Häring, Lars; Kisters, Christian
    Signalling-assisted modulation classification in wireless OFDM systems with adaptive modulation and coding
    In: IEEE International Conference on Communications (ICC), 2013 / IEEE International Conference on Communications (ICC), 2013 : 9 - 13 June 2013, Budapest, Hungary / Kim, Dong-In (Hrsg.) 2013, S. 5037 - 5041
    Online Volltext: dx.doi.org/

    • 2012

  • Häring, Lars
    Automatic Modulation Classification for Adaptive Wireless OFDM Systems
    In: Wireless Communications and Networks - Recent Advances / Eksim, Ali (Hrsg.) 2012, S. 381 - 402
    Online Volltext: dx.doi.org/
  • Naßenstein, Kai; Maderwald, Stefan; Müller, Edgar; Bruder, Oliver; Schlosser, Thomas Wilfried; Eberle, Holger; Zenge, Michael; Czylwik, Andreas; Häring, Lars; Orzada, Stephan
    Cardiac MRI : evaluation of phonocardiogram-gated cine imaging for the assessment of global und regional left ventricular function in clinical routine
    In: European Radiology Jg. 22 (2012) Nr. 3, S. 559 - 568
    Online Volltext: dx.doi.org/
  • Kisters, Christian; Häring, Lars; Czylwik, Andreas
    Implementation of a real–time adaptive modulation OFDM transceiver system
    In: Proceedings of the 17th International OFDM Workshop 2012 / 17th International OFDM Workshop 2012 (InOWo'12) : August 29th - 30th 2012, Essen, Germany / Czylwik, Andreas (Hrsg.) 2012, S. 156 - 160
    Online Volltext
  • Häring, Lars; Kisters, Christian
    Performance comparison of adaptive modulation and coding in OFDM systems using signalling and automatic modulation classification
    In: 17th International OFDM Workshop 2012 / InOWo 2012; Essen, Germany; 29 - 30 August 2012 2012
  • Kisters, Christian; Häring, Lars; Czylwik, Andreas
    Implementation of a real-time adaptive modulation OFDM transceiver system
    In: 17th International OFDM Workshop 2012 / InOWo 2012; Essen, Germany; 29 - 30 August 2012 2012
  • Naßenstein, Kai; Orzada, Stephan; Häring, Lars; Czylwik, Andreas; Jensen, Christoph; Schlosser, Thomas Wilfried; Bruder, Oliver; Ladd (M.), Mark E.; Maderwald, Stefan
    Cardiac magnetic resonance : Is phonocardiogram gating reliable in velocity-encoded phase contrast imaging?
    In: European Radiology Jg. 22 (2012) Nr. 12, S. 2679 - 2687
    Online Volltext: dx.doi.org/
  • Kisters, Christian; Häring, Lars; Czylwik, Andreas
    Software defined radio with adaptive modulation - a framework for USRP2-boards
    In: Proceedings of the 8th Karlsruhe Workshop on Software Radios / 8th Karlsruhe Workshop on Software Radios : Karlsruhe (Germany), March 12/13, 2014 / Universität Karlsruhe. Institut für Nachrichtentechnik (Hrsg.) 2012, S. 29 - 34

    • 2011

  • Chen, Yanling; Häring, Lars; Czylwik, Andreas
    Map-based automatic modulation classification with reduced complexity for TDD-based adaptive OFDM systems
    In: Proceedings of the 16th International OFDM-Workshop (InOWo) / 16th International OFDM-Workshop (InOWo), Hamburg, Germany, Sept. 2011 2011, S. 6 - 11
  • Häring, Lars; Chen, Yanling; Czylwik, Andreas
    Utilizing Side Information in Modulation Classification for Wireless OFDM Systems with Adaptive Modulation
    In: IEEE Vehicular Technology Conference (VTC Fall): Proceedings / IEEE Vehicular Technology Conference (VTC Fall), 2011 : 5 - 8 Sept. 2011, San Francisco, California, Fourth IEEE International Symposium on Wireless Vehicular Communications (IEEE WiVeC 2011) 2011, S. 1 - 5
    Online Volltext: dx.doi.org/

    • 2010

  • Häring, Lars; Chen, Yanling
    Automatic Modulation Classification Methods for Wireless OFDM Systems in TDD Mode
    In: IEEE transactions on communications Jg. 58 (2010) Nr. 9, S. 2480 - 2485
    Online Volltext: dx.doi.org/
  • Häring, Lars; Chen, Yanling
    Efficient Modulation Classification for Adaptive Wireless OFDM Systems in TDD Mode
    In: EEE Wireless Communications and Networking Conference (WCNC) / IEEE Wireless Communications and Networking Conference (WCNC), 2010 : Sydney, Australia, 18 - 21 April 2010 / Institute of Electrical and Electronics Engineers (Hrsg.) 2010, S. 1 - 6
    Online Volltext: dx.doi.org/
  • Häring, Lars; Bieder, Stefan; Czylwik, Andreas; Kaiser, Thomas
    Estimation algorithms of multiple channels and carrier frequency offsets in application to multiuser OFDM systems
    In: IEEE Transactions on Wireless Communications (T-WC) Jg. 9 (2010) Nr. 3, S. 865 - 870
    Online Volltext: dx.doi.org/
  • Chen, Yanling; Häring, Lars; Czylwik, Andreas
    Likelihood function-based automatic modulation classification in mobile radio OFDM systems
    In: Proceedings of the 15th International OFDM-Workshop (InOWo) / 15th International OFDM-Workshop (InOWo), Hamburg, Germany, Sept. 2010 2010, S. 165 - 169
  • Akbudak, T.; Czylwik, Andreas; Häring, Lars
    Implementation of an acoustical MIMO-OFDM transceiver system
    In: Proceedings of the 15th International OFDM-Workshop (InOWo) / 15th International OFDM-Workshop (InOWo), Hamburg, Germany, Sept. 2010 2010

    • 2009

  • Häring, Lars; Bieder, Stefan; Czylwik, Andreas
    Fine frequency synchronization in the uplink of multiuser OFDM systems
    In: IEEE transactions on communications : a publication of the IEEE Communications Society Jg. 57 (2009) Nr. 12, S. 3743 - 3752
    Online Volltext: dx.doi.org/

    • 2008

  • Bieder, Stefan; Häring, Lars; Czylwik, Andreas
    Capacity of UMTS-FDD-based cellular systems with smart antennas in presence of position and alignment errors
    In: IEEE Radio and Wireless Symposium / IEEE Radio and Wireless Symposium, 2008 : RWS '08 ; 22 - 24 Jan. 2008, Orlando, Florida ; incorporating WAMICON, Wireless and Microwave Technology Conference / Muldavin, Jeremy (Hrsg.) 2008, S. 647 - 650
    Online Volltext: dx.doi.org/

    • 2007

  • Bieder, Stefan; Chalise, B.K.; Häring, Lars; Czylwik, Andreas
    Different Array Configurations and Realistic Antenna Characteristics in the Downlink of WCDMA-Based Cellular Systems
    In: Proceedings: INICA 2007 / INICA 2007, International Conference on Antennas : Arabella Sheraton, Munich, March 28 - 30, 2007 2007
    Online Volltext: dx.doi.org/
  • Bieder, Stefan; Häring, Lars; Czylwik, Andreas
    Impact of imperfections in the array configuration on the capacity of UMTS-FDD based cellular networks with smart antennas
    In: COST 2010 / 3rd MCM, Duisburg, Germany, Sept. 2007 2007
  • Bieder, Stefan; Häring, Lars; Czylwik, Andreas
    Performance of Different Adaptive Beamforming Concepts in Cellular UMTS-FDD Networks using Realistic Base Station Antenna Elements
    In: EuCAP 2007 / European Conference on Antennas and Propagation, 11 - 16 November 2007, EICC, Edinburgh, UK 2007
  • Bieder, Stefan; Chalise, B.K.; Häring, Lars; Czylwik, Andreas
    Realistic antenna elements and different array topologies in the downlink of UMTS-FDD networks
    In: Proceedings of the ITG/IEEE Workshop on Smart Antennas / ITG/IEEE Workshop on Smart Antennas 2007, Vienna, Austria, Feb. 2007 2007
    Online Volltext
  • Häring, Lars
    Synchronisation in Mehrnutzer-OFDM-Systemen
    In: Berichte aus der Elektrotechnik Aachen (2007) XX, 197 S.

    • 2006

  • Häring, Lars; Czylwik, Andreas; Bieder, Stefan
    Improvement of cyclic prefix based timing metrics in OFDM systems by exploiting the channel statistics
    In: Proceedings of the 11th International OFDM-Workshop (InOWo) / 11th International OFDM-Workshop (InOWo), Hamburg, Germany, Aug. 2006 / Rohling, Hermann (Hrsg.) 2006, S. 136 - 140
  • Häring, Lars; Bieder, Stefan; Czylwik, Andreas
    On synchronization in multiuser OFDM/SDMA with multiple frequency offsets
    In: Proceedings of the ITG Workshop on Smart Antennas / ITG Workshop on Smart Antennas 2006, Ulm, Germany, Mar. 2006 2006
  • Häring, Lars; Bieder, Stefan; Czylwik, Andreas
    Closed-Form Estimators of Carrier Frequency Offsets and Channels in the Uplink of Multiuser OFDM Systems
    In: 2006 IEEE International Conference on Acoustics, Speech and Signal Processing: Proceedings / IEEE International Conference on Acoustics, Speech and Signal Processing, 2006, ICASSP 2006 : 14 - 19 May 2006, [Toulouse, France] 2006, S. IV - IV
    Online Volltext: dx.doi.org/
  • Bieder, Stefan; Alshabo, A.; Häring, Lars; Czylwik, Andreas;
    Investigations on correlation properties of ultra-wideband radio channels
    VDE/ITG Diskussionssitzung Antennen und Messverfahren fuer Ultra-Wide-Band (UWB)-Systeme, Kamp-Lintfort, Germany, Dec. 2006,
    (2006)
  • Häring, Lars; Czylwik, Andreas; Bieder, Stefan
    Residual Carrier and Sampling Frequency Synchronization in Multiuser OFDM Systems
    In: IEEE 63rd Vehicular Technology Conference: Proceedings / 63rd Vehicular Technology Conference, 2006 : VTC 2006-Spring ; 7 - 10 May 2006, Melbourne, Australia 2006, S. 1937 - 1941
    Online Volltext: dx.doi.org/

    • 2005

  • Kaiser, Thomas; Wilzeck, A.; Berentsen, M.; Camargo, Alfonso; Peng, X.; Häring, Lars; Bieder, S.; Omoke, D.; Kani, A.; Lazar, O.; Tempel, R.; Ancona, F.
    A MIMO platform for research and education
    In: Smart antennas - state of the art / Kaiser, Thomas; Bourdoux, Andre; Boche, Holger; Rodriguez Fonollosa, Javier; Andersen, Jørgen Bach; Utschick, Wolfgang (Hrsg.) 2005, S. 811 - 851
  • Häring, Lars; Czylwik, Andreas; Bieder, Stefan
    Estimation and compensation of residual frequency offsets in multiuser OFDM systems
    In: Proceedings of the 10th International OFDM Workshop (InOWo '05) / 10th International OFDM Workshop (InOWo '05) August 31st - September 1st, Hamburg, Germany / Rohling, Hermann (Hrsg.) 2005, S. 1 - 5

    • 2004

  • Häring, Lars; Speth, M.; Czylwik, Andreas; Bieder, Stefan
    Phase Noise Induced Intercarrier Interference in Multiuser OFDM Systems
    In: Proceedings of the IASTED International Conference on Communications Systems and Networks (CSN) / IASTED International Conference on Communications Systems and Networks (CSN), Marbella, Spain, Sept. 2004 2004, S. 225 - 230
    Online Volltext
  • Chalise, B.K.; Czylwik, Andreas; Häring, Lars
    Robust uplink to downlink spatial covariance matrix transformation for downlink beamforming
    In: Gate to the global information society / IEEE International Conference on Communications ; ICC 2004 ; 20 - 24 June 2004, Paris 2004, S. 3010 - 3014
    Online Volltext: dx.doi.org/
  • Häring, Lars; Czylwik, Andreas
    Synchronization in MIMO OFDM systems
    In: Advances in Radio Science Jg. 4 (2004) S. 147 - 153
    Online Volltext: dx.doi.org/
  • Chalise, B.K.; Czylwik, Andreas; Häring, Lars
    Robust spatial covariance matrix transformation techniques for downlink beamforming
    In: Access, transmission, networking: Proceedings / International Zurich Seminar on Communications ; February 18 - 20, 2004, ETH Zurich, Switzerland 2004, S. 204 - 207
    Online Volltext: dx.doi.org/
  • Chalise, B.K.; Czylwik, Andreas; Häring, Lars
    Uplink to downlink spatial covariance matrix transformation methods for downlink beamforming of a UMTS-FDD system
    In: Proceedings: towards a global wireless world / IEEE 59th Vehicular Technology Conference, VTC 2004-Spring, 17 - 19 May 2004, Milan, Italy 2004, S. 132 - 136
    Online Volltext: dx.doi.org/

    • 2003

  • Häring, Lars; Czylwik, Andreas; Speth, M.
    Analysis of synchronization impairments in multiuser OFDM systems
    In: Proceedings of the 9th International OFDM-Workshop (InOWo) / 9th International OFDM-Workshop (InOWo'04 ), September 15 /16 in Dresden , Germany, 2014 / Rohling, Hermann (Hrsg.) 2003, S. 91 - 95
  • Häring, Lars; Czylwik, Andreas; Chalise, B.K.
    Dynamic system level simulations of downlink beamforming for UMTS FDD
    In: Communications: the global bridge / GLOBECOM '03, IEEE Global Telecommunications Conference, [1 - 5 December 2003, San Francisco, CA, USA] 2003, S. 492 - 496
    Online Volltext: dx.doi.org/
  • Chalise, B.K.; Häring, Lars; Czylwik, Andreas
    System level performance of UMTS-FDD with covariance transformation based DL beamforming
    In: Communications: the global bridge / GLOBECOM '03, IEEE Global Telecommunications Conference, [1 - 5 December 2003, San Francisco, CA, USA] 2003, S. 133 - 137
    Online Volltext: dx.doi.org/

    • 2002

  • Häring, Lars; Gershman, Alex; Kaiser, Thomas; Scholand, T.
    Robust beamforming in application to smart antennas for TD-SCDMA communications
    In: Digest of the Second Joint Symposium on Opto- and Microelectronic Devices and Circuits: March 10-16, 2002, Stuttgart / Berroth, M. (Hrsg.) 2002, S. 279 - 282