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Master Theses and Student Projects
Low-Complexity Ultra-Wideband Impulse Radio Transceiver Design and System Architecture
One of the most promising technologies for future wireless sensor networks
is ultra wideband (UWB) communications.
Operating in the spectrum from 3.1 - 10.6 GHz, the very high bandwidth allows
for innovative system approaches such as new localization and imaging methods or
the implementation of low complexity data transmission systems. UWB communication
enables the use of novel transceiver architectures and algorithms for applications
in the biomedical, industrial or environmental field.
For instance, ultra wideband impulse radio (IR)
communication attracted much interest for the use in wireless sensor networks (WSN)
and body area networks (BAN) due to low complexity and energy efficient system
realizations. In particular noncoherent receivers can be implemented very
efficiently and promise low power consumption to meet stringent constraints on
battery autonomy. Using binary pulse position modulation (PPM), data is
transmitted at different time-shifts according to the different bit values.
Recently, we presented an energy detection based ultra-low power UWB system
design with an overall estimated current consumption of less than 1 mW [1]. Low
duty cycle operation together with a high peak data rate arises as the key to
achieve a medium data rate system with very low current consumption.
Furthermore, the large bandwidth of UWB enables localization
with high spatial resolution. For many applications, joint localization and data
communication is desirable, e.g. tracking items in a production hall, airport or
hospital combined with query of sensor data. The location knowledge can be used
for performance enhancement of data transmission. In [2] we showed how to use
regional channel knowledge to improve the performance for a system with many low
complexity wireless stations.
Master theses and student projects supporting our research
in UWB can include theory and algorithms and implementation in software or
hardware. In particular we like to point to the following available projects:
- Implementation and performance evaluation of
low-complexity modem algorithms on the UWB test bed
- Combined localization and data detection algorithms
- Imaging methods based on Ultra-wideband
For further information please contact Heinrich Lücken.
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| Synergy of Localization and Communication |
Ultra wideband test bed [4] |
References:
[1] F. Troesch, C. Steiner, T. Zasowski, T. Burger, and A.
Wittneben, "Hardware aware optimization of an ultra low power UWB communication
system," IEEE International Conference on
Ultra-Wideband, ICUWB 2007, pp. 174-179,
September 2007.
[2] H. Luecken, T. Zasowski, C. Steiner, F. Trösch, and A. Wittneben,
"Location-aware Adaptation and Precoding for Low Complexity IR-UWB Receivers,"
IEEE International Conference on Ultra-Wideband, ICUWB 2008, Hanover, Germany, Vol. 3, pp. 31-34, Sept. 2008
[3] H. Luecken, T. Zasowski, and A. Wittneben,
"Synchronization Scheme for Low Duty Cycle UWB Impulse Radio Receiver,"
IEEE International Symposium on Wireless Communication Systems 2008, ISWCS'08, Reykjavik, Iceland, pp. 503-507, Oct. 2008.
[4] C. Steiner, H. Luecken, T. Zasowski, F. Troesch, and A. Wittneben,
"Ultra low power UWB modem design: Experimental verification and performance evaluation,"
Union Radio Scientifique Internationale, URSI, Chicago, USA, Aug. 2008
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