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Toward Wi-Fi Halow Signal Coverage Modeling in Collapsed Structures

Khan, Muhammad Faizan and Wang, Guojun and Bhuiyan, Md Zakirul Alam and Yang, Kun (2020) 'Toward Wi-Fi Halow Signal Coverage Modeling in Collapsed Structures.' IEEE Internet of Things Journal, 7 (3). pp. 2181-2196. ISSN 2327-4662

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Abstract

With the emerging concept of Wi-Fi radio as sensors, we are witnessing more device-free sensing applications. But we observe that most of the existing works of these applications are meant for simple indoor layout and are not adequate for complex cases, e.g., collapsed structures. In this article, we explore the feasibility of Wi-Fi Halow signals for the collapsed scenario as it can boost rescue efforts. To achieve this, we aim at two prime objectives of this article. First, we model debris constituent of common collapsed scenario materials, such as concrete, brick, glass, and lumber by conducting a field survey of an earthquake-affected area. After that, we consider signal propagation models for better coverage in this debris model by employing two methods. The first method is an integrated TOPSIS and Shannon entropy-based on a bijective soft set, which provides us an approximation tool to select the best Wi-Fi Halow signal coverage in debris. The second method composes two modified wireless signal propagation models, which are transmitter-receiver (TR) and Wi-Fi radar, respectively. We perform extensive simulations and figure out that low power transmission using Wi-Fi radar can yield better coverage, which is also verified by the Shannon entropy method.

Item Type: Article
Uncontrolled Keywords: Collapsed structure; coverage; IoT; path loss; rescue; soft set; Wi-Fi Halow
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 12 May 2020 14:52
Last Modified: 15 Jan 2022 01:33
URI: http://repository.essex.ac.uk/id/eprint/27512

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