Low cost and precise localization in a remote-powered wireless sensor and identification system
2011 (English)Conference paper (Refereed)
A low cost and precise localization system based on a remote-powered UWB-RFID tag is presented for wireless identification, sensing, positioning and tracking. Our contribution is to utilize the Impulse Radio Ultra wideband (IR-UWB) communication in aRFID system. Such as conventional RFIDs, a tag captures energy from the received RF signal transmitted by a reader which also carries data and clock. However, instead of backscattering, an Impulse-UWB transmitter is used. By a low power design operation distance of 13.9 meters is achieved. A network consist of several readers provide power and retrieve data from the tags in a wide area. Due to the fine time resolution of the ultra-short pulse in IR-UWB, the UWB receiver in the readers are able to accurately approximate the time of arrival of the signal and based on the time-difference-of-arrival algorithm the position of the tag can be estimated precisely. In the line-of-sight scenario by a two-step acquisition system, ±16.8cm accuracy can be achieved. By a new communication protocol proposed based on slotted-ALOHA anti-collision algorithm, 2000 tags per second can be read. The tag circuitry is designed and implemented in CMOS 180nm technology in a single chip solution.
Place, publisher, year, edition, pages
2011. 1-5 p.
Acquisition systems, Anti-collision algorithms, Impulse radio ultra-wideband, Line-of-sight scenarios, Localization system, Low costs, Low-power design, Positioning and tracking, RF signal, RFID systems, Single chip solution, Time of Arrival, Time resolution, Time-difference-of-arrival, UWB receivers, Wide area, Wireless sensor
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-68741ScopusID: 2-s2.0-80051942615ISBN: 978-964463428-4OAI: oai:DiVA.org:kth-68741DiVA: diva2:485260
19th Iranian Conference on Electrical Engineering, ICEE 2011, Tehran, Iran, 17-19 May 2011
QC 201409162012-01-282012-01-282014-09-16Bibliographically approved