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Suche nach „[A.] [Koelpin]“ hat 5 Publikationen gefunden
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    Elektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    Stefan Zorn, M. Gardill, R. Rose, A. Goetz, R. Weigel, A. Koelpin

    A smart jamming system for UMTS/WCDMA cellular phone networks for search and rescue applications

    IEEE/MTT-S International Microwave Symposium digest (MTT), 2012, Piscataway, NJ

    2012

    ISBN: 978-1-4673-1085-7

    DOI: 10.1109/MWSYM.2012.6257769

    Abstract anzeigen

    Recent statistics show an increase in environmental disasters, a fact which is also perceivable to the public as reports of avalanches, earthquakes and landslides mount in media coverage. This paper introduces one part of the I-LOV project, endorsed by the German Federal Ministry of Education and Research. In this project partners from relief organizations, universities and industry investigate enhancements to disaster handling and victim rescue. One possible option is to take advantage of the fact, that a lot of people own a mobile phone today. To locate a person by his or her mobile phone requires to take over the phone by an own Base Transceiver Station (BTS). Jamming all other networks is one option to achieve that. This paper will introduce a new Field Programmable Gate Array (FPGA) based jamming system which disturbs only the absolute necessary parts of the WCDMA spectrum but reliably cuts all connections between mobile stations (MS) and existing BTS. The whole system including the signal generator and the front end will be discussed. Also measurement results will be shown.

    Elektrotechnik und Medientechnik

    Vortrag

    M. Gardill, Stefan Zorn, R. Weigel, A. Koelpin

    Influencing Cell Reselection of UMTS User Equipment Using Interference Injection

    Workshop

    Workshop on Radar, Communication and Measurement (RADCOM), Hamburg

    2011

    Elektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    M. Gardill, Stefan Zorn, R. Weigel, A. Koelpin

    Triggering UMTS user equipment inter-RAT cell reselection using noise jammers

    German Microwave Conference (GeMiC), 2011, Piscataway, NJ

    2011

    ISBN: 978-1-4244-9225-1

    Abstract anzeigen

    In this work a strategy for triggering an interradio access technology cell reselection in UMTS user equipment is proposed. All mobile devices within the effective range of a transmitter radiating a noise-like RF signal on the UMTS downlink frequency bands are forced to leave the UMTS cells and camp on non-UMTS cells, such as e.g., GSM. This allows to use a GSM based localization technique even in areas with UMTS coverage. In contrast to classical RF communication jammers which focus on disrupting the communication link, our exclusive goal is to trigger the inter-RAT cell reselection to GSM. In particular we estimate the necessary jammer RF power by examining the cell reselection procedure running in the user equipment (UE) and using some exemplary geographical scenarios. We use a hardware system to proof the results.

    Elektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    Stefan Zorn, R. Rose, A. Goetz, R. Weigel, A. Koelpin

    A New System for Mobile Phone Localization for Search and Rescue Applications

    Proceedings of the 6th Future Security Research Conference (September 5th - 7th 2011, Berlin), Stuttgart

    2011

    ISBN: 978-3-8396-0295-9

    Elektrotechnik und Medientechnik

    Beitrag (Sammelband oder Tagungsband)

    Stefan Zorn, G. Bozsik, R. Rose, A. Goetz, R. Weigel, A. Koelpin

    A power sensor unit for the localization of GSM mobile phones for search and rescue applications

    IEEE Sensors 2011 Conference, [Piscataway, N.J.]

    2011

    ISBN: 978-1-4244-9290-9

    DOI: 10.1109/ICSENS.2011.6127162

    Abstract anzeigen

    Email Print Request Permissions Recent statistics show an increase in environmental disasters, a fact which is also perceivable to the public as reports of avalanches, earthquakes and landslides mount in media coverage. Recent examples are Haiti 2010 and Fukushima 2011. Search and Rescue with modern localization techniques consequently attracts attention from scientific and industrial sides. This paper introduces a field strength measurement unit, which is part of the I-LOV project1. In this project partners from relief organizations, universities, and industry investigate enhancements in disaster handling and victim rescue. One possible option is to take advantage of the fact that most people own a mobile phone today and take it with them the whole day. To locate a person by his or her mobile phone requires to find the maximum of its radiated field strength. This paper will show a new power sensor unit for GSM signals. The complete design flow from requirements considerations to measurement results will be demonstrated. A dynamic range of 107 dB is only one of the remarkable outcomes.