A Low-Cost Ultra-Wideband Indoor Ranging System
2009 (English)In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, Vol. 58, no 12, 3935-3942 p.Article in journal (Refereed) Published
This paper presents the development of a low-cost indoor ranging technique based on time-of-arrival (TOA) estimation, using short-pulse ultra-wideband (UWB) signals. The realized system includes two identical UWB transceiver devices, in which the receiver section is based on a tunnel diode detector and the pulse generation is performed by a common bipolar transistor driven in avalanche mode. An indirect measurement of the distance between the devices is obtained by measuring the frequency of the generated pulse train. A theoretical model of the system is described, and a statistical analysis is presented, including the closed-form evaluation of the Cramer-Rao lower bound (CRLB) on the distance estimation and showing the asymptotic statistical efficiency of the proposed estimators. Furthermore, the principle of operation of the realized system prototypes is described, along with some implementation issues. Finally, experimental results are shown and discussed.
Place, publisher, year, edition, pages
2009. Vol. 58, no 12, 3935-3942 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-48564DOI: 10.1109/TIM.2009.2020834ISI: 000271678000002OAI: oai:DiVA.org:kth-48564DiVA: diva2:458050
QC 201111242011-11-212011-11-212011-11-24Bibliographically approved