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Indoor Localisation

DSV’s research in the area of Indoor Localization (IL) concentrates on future wireless systems in order to shape the corresponding devices and standards towards its usefulness for IL. IL itself is a rather old but not yet well-solved challenging real-world scenario. The major challenge is to either entirely avoid an IL-tailored indoor infrastructure - like cost intensive GPS requires a satellite infrastructure - or to make such infrastructure at least so cheap and invisible for the user that a mass market introduction for accurate and reliable IL becomes feasible. Therefore, it is not our ambition to provide the n-th improvement for j-th existing technology. Instead, we try to re-use communication infrastructure for IL, or to get rid of as many IL infrastructure components as possible while still achieving a sufficient and reliable accuracy. This philosophy applies to future LTE releases, to future RFID indoor systems and also to future EB systems. According to DSV’s motto Think complete. special emphasis is given to a comprehensive approach: starting with IL ideas and ending up in IL prototypes.

Some representative questions being addressed in our IL research:

Publications

  • On the effect of shadow fading on wireless geolocation in mixed LoS/NLoS environments
    B. T. Sieskul, F. Zheng, T. Kaiser, “On the effect of shadow fading on wireless geolocation in mixed LoS/NLoS environments”, IEEE Transactions on Signal Processing, vol.57, no.11, pp.4196-4208, 2009.
  • A hybrid SS–ToA wireless NLoS geolocation based on path attenuation: ToA estimation and CRB for mobile position estimation
    B. T. Sieskul, F. Zheng, T. Kaiser, “A hybrid SS–ToA wireless NLoS geolocation based on path attenuation: ToA estimation and CRB for mobile position estimation”, IEEE Transactions on Vehicular Technology, vol.58, no.9, pp.4930-4942, 2009.
  • Evaluation of Localization Measurements in LoS and NLoS Scenarios Using Antenna Arrays
    S. Sczyslo and T. Kaiser, “Evaluation of Localization Measurements in LoS and NLoS Scenarios Using Antenna Arrays”, 39th European Microwave Conf., Rome, Italy, 28 Sept. - 2 Oct. 2009.
  • Cramer-Rao Bound for TOA Estimations in UWB Positioning Systems
    Bamrung Täu Sieskul and T. Kaiser, “Cramer-Rao Bound for TOA Estimations in UWB Positioning Systems”, IEEE International Conference on Ultra-Wideband, September 5-8, 2005, Zürich, Switzerland.
  • Indoor Positioning with UWB Beamforming
    Christiane Senger and T. Kaiser, “Indoor Positioning with UWB Beamforming”, Workshop on Positioning, Navigation and Communication, March 16, 2006, Hannover, Germany.
  • BeamLoc - An Approach for NLoS Localization in UWB Indoor Environments
    Christiane Senger and T. Kaiser, “BeamLoc - An Approach for NLoS Localization in UWB Indoor Environments”, IEE Symposium on Ultra Wideband Systems, Technologies and Applications, April 20, 2006, London, UK.
  • Combined AOA/TOA UWB localization
    S. Galler, W. Gerok, J. Schroeder, K. Kyamakya, T. Kaiser, “Combined AOA/TOA UWB localization”, International Symposium on Communications and Information Technologies, 2007. ISCIT'07, 17-19 Oct. 2007, Pages 1049-1053.
  • Three-dimensional indoor localization in Non Line of Sight UWB channels
    Jens Schröder, Stefan Galler, Kyandoghere Kyamakya, T. Kaiser, “Three-dimensional indoor localization in Non Line of Sight UWB channels”, IEEE International Conference on Ultra-Wideband, September 24-26, 2007, Singapore.
  • Positioning in Wireless Communications Systems - Localization with UWB Signals
    J. Schroeder, S. Galler, C. Senger, T. Kaiser, “Positioning in Wireless Communications Systems - Localization with UWB Signals”, 18th Wireless World Research Forum, Espoo, Finland, 2007.
  • Position Estimation in IR-UWB Autonomous Wireless Sensor Networks
    Golaleh Rahmatollahi, M.D. Prez Guirao, Stefan Galler and T. Kaiser, “Position Estimation in IR-UWB Autonomous Wireless Sensor Networks”, 5th Workshop on Positioning, Navigation and Communication - WPNC'08, Hannover, Germany, 2008.
  • A Hybrid SS-ToA Wireless NLoS Geolocation Based on Path Attenuation: Cramer-Rao Bound
    B. T. Sieskul, T. Kaiser, and F. Zheng, “A Hybrid SS-ToA Wireless NLoS Geolocation Based on Path Attenuation: Cramer-Rao Bound”, Proc. IEEE 69th Vehicular Technology Conference (Spring), Barcelona, Spain, 26-29 April 2009.
  • A Hybrid SS-ToA Wireless NLoS Geolocation Based on Path Attenuation: Mobile Position Estimation
    B. T. Sieskul, F. Zheng, T. Kaiser, “A Hybrid SS-ToA Wireless NLoS Geolocation Based on Path Attenuation: Mobile Position Estimation”, Proc. IEEE Wireless Communications and Networking Conference, Budapest, Hungary, 5-8 April 2009.
  • Time-of-Arrival Estimation in Path Attenuation
    B. T. Sieskul, F. Zheng, T. Kaiser, “Time-of-Arrival Estimation in Path Attenuation”, Proc. 10th IEEE Int. Workshop on Signal Processing Advances in Wireless Communications, pp.573-577, Perugia, Italy, 21-24 June 2009.
  • Indoor Localization with Closely Spaced Vivaldi Antennas in Ultra-Wideband
    W. Gerok and T. Kaiser, “Indoor Localization with Closely Spaced Vivaldi Antennas in Ultra-Wideband,” 13th International Conference on Database Theory (ICDT), Lausanne, Switzerland, 22-25 March 2010.
  • Influence of the real UWB antennas on the AoA estimation based on the TDoA localization technique
    W. Gerok, M. El-Hadidy, S. Alaa, T. Kaiser, “Influence of the real UWB antennas on the AoA estimation based on the TDoA localization technique,” 1st Middle East Conf. Antennas and Propagation, Cairo, Egypt, 20-22 Oct. 2010.
  • A novel positioning algorithm based on ultra-wideband technology
    W. Gerok and T. Kaiser, “A novel positioning algorithm based on ultra-wideband technology,” 2010 IEEE/ION Position Location and Navigation Symp. (PLANS), California, USA, 4-6 May 2010.
  • A hybrid SS-ToA wireless geolocation based on path attenuation under imperfect path loss exponent
    I. V. Martínez, B. T. Sieskul, F. Zheng, T. Kaiser, “A hybrid SS-ToA wireless geolocation based on path attenuation under imperfect path loss exponent,” 2010 European Signal Processing Conf. (EUSIPCO-2010), Aalborg, Denmark, 23-27 August 2010.
  • Infrastructure-Aided Localization with UWB Antenna Arrays
    G. Adamiuk, S. Sczyslo, S. Arafat, W. Wiesback, T. Zwick, T. Kaiser, and K. Solbach, “Infrastructure-Aided Localization with UWB Antenna Arrays”, Frequenz, vol.63, no.9-10, pp.210-213, 2009.
  • Study of the TDOA Assisted RSSD Localization with UWB in Real Indoor Environment
    W. Gerok, J. Peissig, and T. Kaiser, “Study of the TDOA Assisted RSSD Localization with UWB in Real Indoor Environment,” 19th European Wireless Conf., Guildford, UK, 16-18 April 2013.
  • Reference selection for hybrid TOA/RSS linear least squares localization
    Y. Wang, F. Zheng, M. Wiemeler, W. Xiong, and T. Kaiser, “Reference selection for hybrid TOA/RSS linear least squares localization,” 2013 IEEE 78th Vehicular Technology Conf. Las Vegas, USA, 2-5 Sept. 2013
  • Two-step hybrid self-localization using unsynchronized low-complexity anchors
    Y. Wang, M. Wiemeler, F. Zheng, W. Xiong, and T. Kaiser, “Two-step hybrid self-localization using unsynchronized low-complexity anchors,” Int. Conf. on Localization and GNSS, Turin, Italy, 25-27 June 2013