Dipl.-Ing. Eckhard
Ohlmer
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Postal |
Technische Universität Dresden |
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Visit |
Barkhausen-Building, Room II 4D |
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Phone: |
+49 351 463 41054 |
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Fax: |
+49 351 463 41099 |
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E-mail: |
Eckhard.Ohlmer(at)ifn.et.tu-dresden.de |
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Vita
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2007 – Research Associate
at Vodafone Chair Mobile Communications Systems, Dresden, Germany ·
2006 – Diploma (Master
degree) thesis on training sequence design for MIMO-OFDM, Vodafone Chair,
Dresden, Germany ·
2005 – Internship
Panasonic European Laboratories GmbH: Pilot design for 3GPP-LTE, Langen,
Germany ·
2001 – Electrical
Engineering at Technische Universität Dresden: Major in Information
Technology ·
2000 – Abitur (High
School) at Humboldt Gymnasium, Radeberg, Germany |
Scientific Interests
·
MIMO Techniques, Distributed Antenna Systems , Link Adaption,
Information Theory, Field Trials
Projects
·
EASY-C: Advanced algorithms for channel adaptive
MIMO systems: Link adaption and detection for 3GPP-LTE
·
MI4HS: Development of a prototype MIMO handset antenna: performance assessment
in field trials
·
WIGWAM: Design of
training sequences for the time and frequency synchronization
Publications
Conference Papers
·
E. Ohlmer, U. Wachsmann and G. Fettweis
Mutual Information
of MIMO Transmission over Correlated Channels with Finite Symbol Alphabets and
Link Adaptation
In Proceedings
of the IEEE Global Communications Conference (Globecom), Miami,
06.-10. Dec. 2010
Accepted for
publication
·
E. Ohlmer, J. Hofrichter, S. Bittner, G. Fettweis, Q. Wang, H. Zhang, K. Wolf and
D. Plettemeier
Urban
Outdoor MIMO Experiments with Realistic Handset and Base Station Antennas
In Proceedings
of the 71st IEEE Vehicular Technology Conference (VTC'10), Taipei,
16. - 19. May 2010
·
G. Fettweis, J. Holfeld, V. Kotzsch, P.
Marsch, E. Ohlmer, Z. Rong, P. Rost
Trial
Results for LTE-Advanced Concepts
In Proceedings of the IEEE
International Conference on Acoustics, Speech and Signal Processing (ICASSP
2010), Dallas, USA, 14. – 19. May 2010
·
E. Ohlmer and G. Fettweis
Linear and Non-Linear
Detection for MIMO-OFDM Systems with Linear Precoding and Spatial Correlation
In Proceedings
of the IEEE Wireless Communications and Networking Conference (WCNC 2010),
Sydney, Australia, 18. - 21. April 2010
·
Q. Wang, D. Plettemeier, H. Zhang, K. Wolf and E. Ohlmer
Diversity Performance of
an Optimized Meander PIFA Array for MIMO Handsets
In Proceedings
of the European Conference on Antennas and
Propagation (EuCAP 2010), Barcelona,
Spain, 12. - 16. April 2010
·
Q. Wang, D. Plettemeier, H. Zhang, K. Wolf and E. Ohlmer
Design and Diversity
Performance of Optimized Dual-Element PIFA Antennas for MIMO Handsets
In Proceedings
of the IEEE International Workshop on Antenna Technology
(IWAT 2010), Lisbon,
Portugal, 1. - 3. April 2010
·
Q. Wang, H. Zhang,
D. Plettemeier, E. Ohlmer and G. Fettweis
Design and Performance
Evaluation of Handset MIMO Antenna Prototypes
In Proceedings
of the International ITG Workshop on Smart Antennas (WSA
2010), Bremen, Germany, 23.
- 24. February 2010
·
E. Ohlmer and G. Fettweis
Link
Adaption in Linearly Precoded Closed-Loop MIMO-OFDM Systems with Linear
Receivers
In Proceedings
of the 68th IEEE Vehicular Technology Conference (VTC'08), Calgary,
Canada, 21. - 24. September 2008
·
E. Ohlmer, T.J. Liang and G. Fettweis
Algorithm
for Detecting the Number of Transmit Antennas in MIMO-OFDM Systems: Receiver
Integration
In Proceedings
of the 68th IEEE Vehicular Technology Conference (VTC'08), Calgary,
Canada, 21. - 24. September 2008
·
E. Ohlmer, T.J. Liang and G. Fettweis
Algorithm
for Detecting the Number of Transmit Antennas in MIMO-OFDM Systems
In Proceedings
of the 67th IEEE Vehicular Technology Conference (VTC'08),
Singapore, 11. - 14. May 2008
Patents
·
Holfeld, E. Ohlmer, R. Habendorf: Adaptive aufwandsreduzierte Kompensation und Detektion von
OFDM-Symbolen bei Trägerfrequenzversätzen
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E. Ohlmer and T. - J. Liang: Verfahren zur Detektion der Anzahl der
Sendeantennen in einem Mehrantennensystem
Diploma Thesis
·
E. Ohlmer, M. Goblirsch, T. – J. Liang and G.
Fettweis
Design von Trainingssequenzen für die Zeit- und
Frequenzsynchronisation in MIMO-OFDM Systemen
Technische
Universität Dresden, 2006
Talks
- E. Ohlmer and G. Fettweis.
Link Adaption in Linearly Precoded Closed-Loop MIMO-OFDM Systems with Linear Receivers
At TUD/FAU/UUlm Joint Workshop on Wireless Communications,
Port d'Andratx, Spain, 16 - 19 March 2009. - E. Ohlmer,
T.-J. Liang and G. Fettweis.
Tracking in Packet Mode MIMO-OFDM Systems
At TUD/EPFL Joint Workshop on Information Theory and Signal Processing in Communications,
Flims, Switzerland, 04 - 08 March 2007.
Student Theses
Finished:
·
Jörg Holfeld, „Untersuchung der Trägerfrequenzsynchronisation in
MIMO-OFDM-Systemen mit verteilten Antennen anhand einer kombinierten
Matlab/Simulink Simulationsstrecke“
·
Christian Kessel, „Vorwärtsadaption der
Kanalschätzung in einem mobilen Empfänger für OFDM“
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Jörg Hofrichter, „Messung und Bewertung der
räumlichen Korrelation prototypischer MIMO Antennen unter realistischen
Ausbreitungsbedingungen“
Open Topics
·
Optimale
Quantisierte Lineare Vorverzerrung für Suboptimale Mehrantennen
Detektionsverfahren
Teaching
- Mobile
Nachrichtensysteme II (2007 - 2009)