Cooperative Communications in Ultra-Wideband Wireless Body Area Networks: Channel Modeling and System Diversity Analysis

Chen, Yifan; Teo, Jianqi; Lai, Joshua Chong Yue; Gunawan, E.; Low, Kay Soon; Soh, Christina; Rapajic, P.B.

doi:10.1109/jsac.2009.090102

Cited by 101 publications

(49 citation statements)

References 26 publications

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“…Algunos otros autores se atreven a realizar aproximaciones un poco más particulares del modelo de path loss, como [6], donde de los resultados de medidas se decide hacer una aproximación de un modelo a dos tramos, cada uno de los tramos corresponde a una ecuación de pendiente simple. Es posible que esto sea evidencia de que hay que clasificar el modelo de propagación y de canal por tramos, ya que el comportamiento en cercanías inmediatas (unos 20 cm o menos) tiende a un tipo de comportamiento característico de línea de vista y para distancias mayores, hay un ambiente muy distinto, en donde la difracción es el fenómeno de propagación que más contribuye.…”

Section: A Modelos De Gran Escalaunclassified

“…» No hay un acuerdo general sobre la amplitud del desvanecimiento en las redes de área corporal. Zasowoski [53] afirma que las amplitudes tienen una distribución lognormal, Chen aproxima varias distribuciones que pasan el criterio de bondad en la aproximación del modelo probabilístico y se modelan como distribuciones lognormal y exponencial [6]. En [22] aproximan las amplitudes a una distribución lognormal.…”

Section: Figura 2 Modelos De Canal De Pequeña Escalaunclassified

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Body Area Network. A perspective to the future, from research

Betancur

2011

sist.telemat.

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Artículo de revisión 11 ResumenActualmente, las redes de área corporal (Body Area Network) han logrado una especial relevancia, en particular por las tendencias que muestran su uso en la medicina, en aplicaciones de monitoreo y emergencia. Han surgido nuevos esquemas regulatorios y de estandarización, que han permitido la creación de nuevos estándares de comunicaciones, tales como Bluetooth, ZigBee, Ultra Wide Band (UWB), ECMA368, WiFi, GPRS, LTE, entre otros que tratan de dar soluciones a distintos retos y necesidades que surgen a medida que se incorporan estas tecnologías al estilo de vida. Este documento presenta el estado actual de las redes de área corporal desde una perspectiva de la investigación, que incluye un estado general de la regulación y estandarización de las redes de área corporal, la descripción de las aplicaciones y tendencias investigativas, y el posible futuro que enmarcan las comunicaciones de área personal AbstractBody Area Networks (BAN) is a growing field for such applications like Health monitoring and health related issues. Recently, new standards and technologies have been proposed, like Bluetooth, ZigBee, Ultra Wide Band (UWB), ECMA 386, WiFi, LTE, etc, oriented to provide solutions to different problems and requirements arising from our current life style. This document presents a revision of the current developments in Body Area Networks from a research point of view, revising aspects of standardization, applications and future trends in this amazing field.

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Section: A Modelos De Gran Escalaunclassified

Section: Figura 2 Modelos De Canal De Pequeña Escalaunclassified

Body Area Network. A perspective to the future, from research

Betancur

2011

sist.telemat.

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“…Other studies on UWB-MIMO and UWB diversity were presented in [16][17][18][19][20][21][22][23]. Antenna diversity results for the UWB indoor channel are presented in [19], with an emphasis on differences between virtual and real compact arrays, including mutual coupling effects.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Ultra Wideband Diversity Techniques for on-Body Radio Communications

Abbasi

Khan²,

Liaqat³

et al. 2013

PIER C

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Abstract-This paper presents an experimental investigations and analyses of ultra-wideband antenna diversity techniques and their effect on the on-body radio propagation channels. Various diversitycombining techniques are applied to highlight; how the overall system performance may be enhanced. Diversity gain is calculated for five different on-body channels and the impact of variation in the spacing between diversity branch antennas is discussed, with an emphasis on mutual coupling, correlation and power imbalance.Results demonstrate the repeatability and reliability of the analysis with error variations as low as 0.8 dB. The study highlights the significance of diversity techniques for non-line-of-sight propagation scenarios in body-centric wireless communications.

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“…To date many transmission models in the BAN UWB band have focused on wearable devices [8][9][10] as well as beamformers [11] and imagers [12], with only a few models targeting implant channels [3,13,14].…”

Section: Introductionmentioning

confidence: 99%

Computationally Efficient Model for Uwb Signal Attenuation Due to Propagation in Tissue for Biomedical Implants

Theilmann¹,

Tassoudji²,

Teague³

et al. 2012

PIER B

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Abstract-An analytical model which predicts the attenuation of ultrawide-band (UWB) signals as they traverse various inhomogeneous tissues is presented. The model provides a computationally efficient method of determining the frequency-dependent losses encountered by electromagnetic radio frequency (RF) signals used to communicate with biomedical implants.Classic transmission line theory is employed to generate an analytical representation which models the inhomogeneous tissue using layers of homogeneous material. The proposed model was verified experimentally with tests of both single and multilayer samples. A realistic abdominal implant scenario was also modeled and the predictions were verified using a commercially available 3D electromagnetic (EM) simulator. The results of this study indicate that for deep implants the higher frequency portion of the UWB spectrum is attenuated much more strongly than the lower end of the band. This implies that for robust communication UWB signals targeting biomedical implants should be limited to the lower portion of the spectrum.

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Cooperative Communications in Ultra-Wideband Wireless Body Area Networks: Channel Modeling and System Diversity Analysis

Cited by 101 publications

References 26 publications

Body Area Network. A perspective to the future, from research

Body Area Network. A perspective to the future, from research

Experimental Investigation of Ultra Wideband Diversity Techniques for on-Body Radio Communications

Computationally Efficient Model for Uwb Signal Attenuation Due to Propagation in Tissue for Biomedical Implants

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