Gierlich R, Hüttner J, Ziroff A, Huemer M (2008)
Publication Type: Conference contribution
Publication year: 2008
Pages Range: 49-52
Conference Proceedings Title: European Wireless Technology Conference (EuWiT)
Event location: Amsterdam, Netherlands
URI: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4753804
An indoor positioning system operating in the 5.8 GHz ISM-band is presented. The system principle is based on time-difference of arrival (TDoA) measurements by means of frequency modulated continuous wave (FMCW) signals. We briefly outline the measurement principle and system topology. Furthermore, we present a localizable tag hardware that features a novel integrated fractional-N PLL synthesizer for frequency ramp generation. The synthesizer IC has been designed within the Resolution project with the objective of low-power and inexpensive signal generation. The second focus of this paper is on measurement results that have been obtained using the integrated synthesizer in combination with a 4-channel base station. Due to the constricted signal bandwidth of 150 MHz, multipath propagation sets tight limits on ranging accuracy. By application of digital beam-forming techniques on the infrastructure side, we could significantly decrease the impact of channel echoes on accuracy compared with conventional single-channel systems.
APA:
Gierlich, R., Hüttner, J., Ziroff, A., & Huemer, M. (2008). Indoor Positioning Utilizing Fractional-N PLL Synthesizer and Multi-Channel Base Stations. In European Wireless Technology Conference (EuWiT) (pp. 49-52). Amsterdam, Netherlands.
MLA:
Gierlich, Roland, et al. "Indoor Positioning Utilizing Fractional-N PLL Synthesizer and Multi-Channel Base Stations." Proceedings of the European Wireless Technology Conference (EuWiT), Amsterdam, Netherlands 2008. 49-52.
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