Abstract
Ultra-Wideband (UWB) is an emerging technology for short-range wireless communications. Due to the high bandwidth of UWB signals, accurate ranging and positioning is possible, which is one of many reasons why UWB is a candidate physical layer for another emerging research area, that of wireless sensor networks (WSNs). In this work, we argue that the ranging algorithm design should be made with the characteristics of the positioning algorithm in mind. In considering ranging and positioning in parallel, we are able to construct a range estimator that is tailored to the positioning algorithm, thereby achieving robustness to non-line-of-sight (NLOS) effects, reasonable overall complexity, and good performance in terms of positioning error. The analysis and simulations in this work are based on the channel models adopted by the IEEE 802.15.4a working group, and highlight the benefits and drawbacks of the proposed approach.
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References
Win, M., & Scholtz, R. (1978). Impulse radio: How it works. IEEE Communication Letters.
Gezici S., Tian Z. et al. (2005). Localization via ultra-wideband radios. IEEE Signal Processing Magazine 22, 70–84
Lee J.-Y., Scholtz R.A. (2002). Problems in modeling UWB channels. In Proceedings of Asilomar Conference on Systems and Computers 1, 706–711
Lee J.-Y., Scholtz R.A. (2002). Ranging in a dense multipath environment using an UWB radio link. IEEE Journal on Selected Areas in Communications 20, 1677–1683
Güvenç I., Ṣahinoğlu Z., Orlik P. (2006) TOA estimation for IR-UWB systems with different transciever types. IEEE Transactions on Microwave Theory and Techniques 54, 1876–1886
Rydström, M., Ström, E. G., & Svensson, A. (2006). Robust sensor network positioning based on projections onto circular and hyperbolic convex sets (POCS). In Proceedings of 7th IEEE workshop on Signal Processing Advances in Wireless Communications, July 2006.
Molisch, A., Balakrishnan, K. et al. (2005). IEEE P802.15 WPAN. Technical Report p802.15-04/662r2-tg4a, July 2005.
Rydström, M., Urruela, A., Ström, E. G., & Svensson, A. (2006). Autonomous positioning techniques based on Cramér-Rao lower bound analysis. EURASIP Journal on Applied Signal Processing, Article ID 93043, 10 pp.
Kay, S. M. (1993). Fundamentals of statistical signal processing: Estimation theory. Prentice Hall PTR.
Censor, Y., & Zenios, S. A. (1997). Parallel optimization, theory, algorithms, and applications. Oxford University press.
Blatt, D., & Hero, A. O. (2005). Sensor network source localization via projection onto convex sets (POCS). In Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing, Mar. 2005.
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Rydström, M., Reggiani, L., Ström, E.G. et al. Adapting the Ranging Algorithm to the Positioning Technique in UWB Sensor Networks. Wireless Pers Commun 47, 27–38 (2008). https://doi.org/10.1007/s11277-007-9388-7
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DOI: https://doi.org/10.1007/s11277-007-9388-7