Name
Abstract | ||
|---|---|---|
Positioning and ranging within UHF RFID are highly dependent on the channel characteristics. The accuracy of time-of-flight based ranging systems is fundamentally limited by the available bandwidth. This paper first analyzes the UHF RFID backscatter channel formed by convolution of the individual constituent channels. For this purpose, we present comprehensive wideband channel measurements in two representative scenarios and an analysis with respect to the Rician K-factor for the line-of-sight component, the root-mean-square delay spread, and the coherence distance, which all influence the potential positioning performance. Based on these measurements, we validate the Cramér Rao lower bound for time-of-flight based ranging under the influence of dense multipath and present two types of range estimators, a maximum likelihood and a matched filter approach. The resulting range estimates highlight the need for an increased bandwidth for UHF RFID systems with respect to time-of-flight based ranging. |
Year | DOI | Venue |
|---|---|---|
2017 | 10.1109/RFID.2017.7945596 | 2017 IEEE International Conference on RFID (RFID) |
Keywords | Field | DocType |
UHF-RFID backscatter channel analysis,wideband ranging,comprehensive wideband channel measurements,Rician K-factor,line-of-sight component,root-mean-square delay spread,coherence distance,time-of-flight based ranging,matched filter approach,maximum likelihood estimation | Multipath propagation,Wideband,Delay spread,Communication channel,Electronic engineering,Ranging,Bandwidth (signal processing),Matched filter,Engineering,Ultra high frequency | Conference |
ISSN | ISBN | Citations |
2374-0221 | 978-1-5090-4577-8 | 0 |
PageRank | References | Authors |
0.34 | 9 | 6 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Stefan Hinteregger | 1 | 9 | 2.25 |
| Josef Kulmer | 2 | 55 | 6.52 |
| Michael Goller | 3 | 3 | 0.76 |
| Florian Galler | 4 | 10 | 2.43 |
| H. Arthaber | 5 | 16 | 5.91 |
| Klaus Witrisal | 6 | 550 | 58.12 |