Journal ArticleDOI
Antennas and propagation for on-body communication systems
Peter Hall,Yang Hao,Yuriy I. Nechayev,Akram Alomainy,Costas Constantinou,Clive Parini,Muhammad Ramlee Kamarudin,T.Z. Salim,D.T.M. Hee,Rostyslav Dubrovka,A.S. Owadally,Wei Song,Andrea Serra,Paolo Nepa,M. Gallo,M. Bozzetti +15 more
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TLDR
Investigations into channel characterization and antenna performance at 2.45 GHz show that for many channels, an antenna polarized normal to the body's surface gives the best path gain.Abstract:
On-body communication channels are of increasing interest for a number of applications, such as medical-sensor networks, emergency-service workers, and personal communications. This paper describes investigations into channel characterization and antenna performance at 2.45 GHz. It is shown that significant channel fading occurs during normal activity, due primarily to the dynamic nature of the human body, but also due to multipath around the body and from scattering by the environment. This fading can be mitigated by the use of antenna diversity, and gains of up to 10 dB are obtained. Separation of the antenna's performance from the channel characteristics is difficult, but results show that for many channels, an antenna polarized normal to the body's surface gives the best path gain. Simulation and modeling present many challenges, particularly in terms of the problem's scale, and the need for accurate modeling of the body and its movement.read more
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Ubiquitous HealthCare in Wireless Body Area Networks
TL;DR: In this paper, a survey on different architectures used in WBANs for ubiquitous healthcare monitoring is provided, and path loss and its impact on communication is presented with the help of simulations performed for different models of In-Body communication and different factors influencing path loss in On-Body communications.
Proceedings ArticleDOI
Evaluating relaying scheme for BAN TDMA MAC using a space-time dependent channel model
Mickael Maman,Laurent Ouvry +1 more
TL;DR: A BAN channel model useable in network simulations embedding a spatial and temporal dependency using ray tracing techniques is defined applied to the body postures and movements of a walking person and the gain and the cost of relaying purpose in the beacon enabled TDMA MAC are evaluated.
Wet environmental conditions affecting narrow band on-body communication channel for WBANs
Muhammad Irfan Khattak,Robert M. Edwards,Muhammad Shafi,Sheeraz Ahmed,Rozeena Shaikh,Fazlullah Khan +5 more
TL;DR: Results show that wet clothing is generally beneficial to the channel at popular mobile communications frequencies, and is germane to signal budgets in body-centric and mobile communication systems.
Proceedings ArticleDOI
Design of a dual-band antenna for WBAN applications
TL;DR: In this paper, a dual-band antenna with parasitic elements for WBAN applications is proposed, which combines the resonance of a dipole antenna with that of a slit resonance of that.
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A Low-Cost Wideband Quasi-Yagi SIW-Based Textile Antenna
TL;DR: A low-cost wideband textile antenna based on the substrate integrated waveguide (SIW) technology is proposed, and a pure copper taffeta fabric etched on a woolen felt substrate is used to realize the presented antenna.
References
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Journal ArticleDOI
Antenna diversity in mobile communications
TL;DR: The mutual resistance condition offers a powerful design tool, and examples of new mobile diversity antennas are discussed along with some existing designs.
BookDOI
Fundamentals of Wearable Computers and Augumented Reality
Woodrow Barfield,Thomas Caudell +1 more
TL;DR: A trusted reference for almost 15 years, Fundamentals of Wearable Computers and Augmented Reality goes beyond smart clothing to explore user interface design issues specific to wearable tech and areas in which it can be applied.
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Specific absorption rate and temperature elevation in a subject exposed in the far-field of radio-frequency sources operating in the 10-900-MHz range
TL;DR: The exposure of a subject in the far field of radiofrequency sources operating in the 10-900-MHz range has been studied and the thermal model used, which takes into account the thermoregulatory system of the human body, has been validated through a comparison with experimental data.
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Channel model for wireless communication around human body
TL;DR: In this paper, a channel model for a wireless body area network at 400 MHz, 900 MHz and 2.4 GHz was derived and the electromagnetic wave propagation around the body was simulated with a finite-difference time-domain simulator.
Proceedings ArticleDOI
UWB for noninvasive wireless body area networks: channel measurements and results
TL;DR: In this paper, the authors presented UWB channel measurements from 3 to 6 GHz for a body area network (BAN) in an anechoic chamber and an office room.