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Electronics 2014, 3(1), 26-42; doi:10.3390/electronics3010026
Article

Experimental Investigation of Subject-Specific On-Body Radio Propagation Channels for Body-Centric Wireless Communications

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Received: 20 November 2013; in revised form: 17 January 2014 / Accepted: 20 January 2014 / Published: 28 January 2014
(This article belongs to the Special Issue Wearable Electronics)
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Abstract: In this paper, subject-specific narrowband (2.45 GHz) and ultra-wideband (3–10.6 GHz) on-body radio propagation studies in wireless body area networks (WBANs) were performed by characterizing the path loss for eight different human subjects of different shapes and sizes. The body shapes and sizes of the test subjects used in this study are characterised as thin, medium build, fatty, shorter, average height and taller. Experimental investigation was made in an indoor environment using a pair of printed monopoles (for the narrowband case) and a pair of tapered slot antennas (for the ultra-wideband (UWB) case). Results demonstrated that, due to the different sizes, heights and shapes of the test subjects, the path loss exponent value varies up to maximum of 0.85 for the narrowband on-body case, whereas a maximum variation of the path loss exponent value of 1.15 is noticed for the UWB case. In addition, the subject-specific behaviour of the on-body radio propagation channels was compared between narrowband and UWB systems, and it was deduced that the on-body radio channels are subject-specific for both narrowband and UWB system cases, when the same antennas (same characteristics) are used. The effect of the human body shape and size variations on the eight different on-body radio channels is also studied for both the narrowband and UWB cases.
Keywords: ultra-wideband (UWB); narrowband; on-body radio channels; body-centric wireless communications; subject-specific; path loss ultra-wideband (UWB); narrowband; on-body radio channels; body-centric wireless communications; subject-specific; path loss
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Khan, M.M.; Abbasi, Q.H.; Alomainy, A.; Parini, C. Experimental Investigation of Subject-Specific On-Body Radio Propagation Channels for Body-Centric Wireless Communications. Electronics 2014, 3, 26-42.

AMA Style

Khan MM, Abbasi QH, Alomainy A, Parini C. Experimental Investigation of Subject-Specific On-Body Radio Propagation Channels for Body-Centric Wireless Communications. Electronics. 2014; 3(1):26-42.

Chicago/Turabian Style

Khan, Mohammad M.; Abbasi, Qammer H.; Alomainy, Akram; Parini, Clive. 2014. "Experimental Investigation of Subject-Specific On-Body Radio Propagation Channels for Body-Centric Wireless Communications." Electronics 3, no. 1: 26-42.


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