Multiple Simultaneous Ranging in IR-UWB Networks
| Autor: | Shashi Shah, Tanee Demeechai |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
clock offset
Computer science Real-time computing Ultra-wideband 02 engineering and technology ranging time-of-flight Biochemistry Article Analytical Chemistry Robustness (computer science) 0202 electrical engineering electronic engineering information engineering Wireless Electrical and Electronic Engineering Instrumentation business.industry Network packet 020208 electrical & electronic engineering 020206 networking & telecommunications Ranging Atomic and Molecular Physics and Optics Network congestion Time of flight ultra-wideband two-way ranging air time occupancy business |
| Zdroj: | Sensors Volume 19 Issue 24 Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| DOI: | 10.3390/s19245415 |
| Popis: | Growth in the applications of wireless devices and the need for seamless solutions to location-based services has motivated extensive research efforts to address wireless indoor localization networks. Existing works provide range-based localization using ultra-wideband technology, focusing on reducing the inaccuracy in range estimation due to clock offsets between different devices. This is generally achieved via signal message exchange between devices, which can lead to network congestion when the number of users is large. To address the problem of range estimation with limited signal messages, this paper proposes multiple simultaneous ranging methods based on a property of time difference of reception of two packets transmitted from different sources in impulse-radio ultra-wideband (IR-UWB) networks. The proposed method maintains similar robustness to the clock offsets while significantly reducing the air time occupancy when compared with the best existing ranging methods. Experimental evaluation of ranging in a line-of-sight environment shows that the proposed method enables accurate ranging with minimal air time occupancy. |
| Databáze: | OpenAIRE |
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