0000000000511366

AUTHOR

David Tracey

showing 4 related works from this author

An energy analysis of IEEE 802.15.6 scheduled access modes

2010

Body Area Networks (BANs) are an emerging area of wireless personal communications. The IEEE 802.15.6 working group aims to develop a communications standard optimised for low power devices operating on, in or around the human body. IEEE 802.15.6 specifically targets low power medical application areas. The IEEE 802.15.6 draft defines two main channel access modes; contention based and contention free. This paper examines the energy lifetime performance of contention free access and in particular of periodic scheduled allocations. This paper presents an overview of the IEEE 802.15.6 and an analytical model for estimating the device lifetime. The analysis determines the maximum device lifeti…

Settore ING-INF/03 - TelecomunicazioniComputer scienceInter-Access Point Protocolbusiness.industryPhysical layerbiomedical communication body area networks personal area networksIEEE 802.15.6 scheduled access modes body area network channel access modes communications standard device lifetime estimation energy analysis energy lifetime performance human body low power devices low power medical application areas periodic scheduled allocation wireless personal communicationTelecommunications linkBody area networkWirelessIEEE 802.11e-2005TransceiverbusinessIEEE 802.15IEEE 802.11r-2008Computer network2010 IEEE Globecom Workshops
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On-body to on-body channel characterization

2011

Interest in on-body communication channels is growing as the use of wireless devices increases in medical, consumer and military sensor applications. This paper presents an experimental investigation and analysis of the narrowband on-body propagation channel. This analysis considers each of the factors affecting the channel during a range of stationary and motion activities in different environments with actual wireless mote devices on the body. Use of such motes allows greater freedom in the subject's movements and the inclusion of real-world indoor and outdoor environments in a test sequence. This paper identifies and analyses the effect of the different components of the signal propagati…

EngineeringSettore ING-INF/03 - Telecomunicazionibusiness.industrySignallaw.inventionRadio propagationNarrowbandRelaylawElectronic engineeringWirelessFadingbusinessShadow mappingChannel Characterisation channel propagation Embedded system design Body Area NetworksCommunication channel2011 IEEE SENSORS Proceedings
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The effect of body shape and gender on wireless Body Area Network on-body channels

2010

Technological advancements have made possible the emergence of Body Area Networks (BANs). There are numerous on-body channel characterizations in the literature performed on a phantom or a single human subject. In this paper, using multiple subjects, we consider the effect of body shape and gender on the on-body channel. A characterization of a narrowband on-body to on-body channel among different subjects is presented. The paper investigates the relationship between the propagation and the subject's physical characteristics. The investigation is performed at 2360 MHz; the new medical band undergoing FCC approval. Our results show that the path loss in women is less than that in men and the…

GeographyNarrowbandSettore ING-INF/03 - TelecomunicazioniStatisticsBody area networkElectronic engineeringPath lossFadingAntenna measurements Antennas and propagation Body area networks Channel models Fading Shape Wireless sensor networks Body Area Networks Body shape Channel characterization Channel propagation IEEE802.15.6. Wireless Sensor NetworksWireless sensor networkImaging phantomRice distributionCommunication channel
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Analysis of the Effect of Human Presence on a Wireless Sensor Network

2011

Wireless Sensor Networks (WSNs) are gaining an increasing industry wide adoption. However, there remain major challenges such as network dimensioning and node placement especially in Built Environment Networks (BENs). Decisions on the node placement, orientation, and the number of nodes to cover the area of interest are usually ad-hoc. Ray tracing tools are traditionally employed to predict RF signal propagation; however, such tools are primarily intended for outdoor environments. RF signal propagation varies greatly indoors due to building materials and infrastructure, obstacles, node placement, antenna orientation and human presence. Because of the complexity of signal prediction, these f…

business.industryComputer scienceSettore ING-INF/03 - TelecomunicazioniRSSReal-time computingcomputer.file_formatRadio propagationKey distribution in wireless sensor networksBuilt Environment Networks (BENs) Human Presence Node Placement Radiation Patterns Wireless Sensor Networks (WSNs)Ray tracing (graphics)Radio frequencyTransceiverbusinessWireless sensor networkcomputerDimensioningSoftwareComputer network
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