High accurate localisation using multipath effects via physical layer information
by Yajun Zhang; Yawei Chen; Hongjun Wang; Meng Liu; Liang Ma
International Journal of Information and Communication Technology (IJICT), Vol. 15, No. 1, 2019

Abstract: Device-free passive localisation (DFL) has shown great potentials to localising target(s) without carrying any device in the area of interests (AoIs). It is especially useful for many applications, such as hostage rescuing, wildlife monitoring, elder care, intrusion detection, etc. Current received signal strength (RSS) based DFL approaches, however, can only identify underlying the prerequisite that the signal collected is mainly conveying along a direct line-of-sight (LOS) path, but cannot perform well in a typical indoor building with multipath effects. This paper explains the fine-grained CSI-based localisation system that is effective to locate within multipath environment and non-line-of-sight scenarios. The intuition underlying our design is that channel state information (CSI) benefits from the multipath effect, because the received signal measurements at different sampling positions will be the combination of different CSI measurements. We adapt the improved maximum likelihood method to pinpoint single target's location. Final, we propose a prototype of our design utilising commercial IEEE 802.11n NICs. Results from the experimental scenes of a lobby and a laboratory of our university, comparing to RSS-based and CSI-based scheme, demonstrate that our design can locate best single target with the accuracy of 0.95 m.

Online publication date: Wed, 04-Sep-2019

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Information and Communication Technology (IJICT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com