Non-invasive localization using software-defined radios

Khan, M. Z., Taha, A. , Taylor, W., Imran, M. A. and Abbasi, Q. H. (2022) Non-invasive localization using software-defined radios. IEEE Sensors Journal, 22(9), pp. 9018-9026. (doi: 10.1109/JSEN.2022.3160796)

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Abstract

Non-invasive indoor human activity detection using radio waves has attracted the interest of researchers, contributing to a range of new applications including smart healthcare. Localisation of activities can assist in developing advanced healthcare systems able to identify the location of patients. Radio frequencies have been shown in numerous studies as a non-invasive method to identify human activity. This is achieved by observing the signal propagation described in the Channel State Information (CSI). This paper presents experimental results using Universal Software-Defined Radio Peripheral (USRP) devices to identify and localise a single human subject performing activities by utilizing the CSI of radio frequencies. The experiments are carried out to retrieve CSI samples observing a single subject perform no-activity, sitting, standing, and leaning forward actions in various positions in a room. Additional CSI is captured for the subject walking in two directions across the observed area. Giving a total of 6 activities spanning the monitored area. CSI is also collected while the monitored area is empty for further comparison. Artificial intelligence is used to make classifications on collected CSI. The proposed approach uses a Super Learner (SL) algorithm that can identify the location of different activities with 96% accuracy, outperforming existing benchmark approaches.

Item Type:Articles
Additional Information:This work is supported in parts by EPSRC EP/T021020/1 and EP/T021063/1. Muhammad Zakir Khan’s PhD is funded by BARMT Foreign Scholarship Pakistan.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Taha, Dr Ahmad and Khan, Muhammad Zakir and Abbasi, Dr Qammer and Imran, Professor Muhammad and Taylor, William
Authors: Khan, M. Z., Taha, A., Taylor, W., Imran, M. A., and Abbasi, Q. H.
College/School:College of Science and Engineering
College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:IEEE Sensors Journal
Publisher:IEEE
ISSN:1530-437X
ISSN (Online):1558-1748
Published Online:21 March 2022
Copyright Holders:Copyright © 2021 IEEE
First Published:First published in IEEE Sensors Journal 22(9):9018-9026
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
307829Quantum-Inspired Imaging for Remote Monitoring of Health & Disease in Community HealthcareJonathan CooperEngineering and Physical Sciences Research Council (EPSRC)EP/T021020/1ENG - Biomedical Engineering