Measurement and Modeling of Wireless Off-Body Propagation Characteristics Under Hospital Environment at 6–8.5 GHz

Cui, Pengfei; Yu, Yu; Lu, Wen‐Jun; Liu, Yang; Zhu, Hongbo

doi:10.1109/access.2017.2707560

Cited by 18 publications

(9 citation statements)

References 29 publications

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“…There are various studies on propagation characteristics for BANs in different environments [2], [3], [4], especially for medical applications [5], [6]; most of them describe BAN measurements in typical, easily accessible, indoor environments, such as rooms [7], [8], corridors, hospital rooms, laboratories, or even in an anechoic chamber.…”

Section: Introductionmentioning

confidence: 99%

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Fast Fading Characterization for Body Area Networks in Circular Metallic Indoor Environments

et al. 2020

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With the increasing development of 5G and Body Area Network based systems being implemented in unusual environments, propagation inside metallic structures is a key aspect to characterize propagation effects inside ships and other similar environments, mostly composed of metallic walls. In this paper, indoor propagation inside circular metallic structures is addressed and fast fading statistical distributions parameters are obtained from simulation, being assessed with measurements at 2.45 GHz in a passenger ferry discotheque with an 8 m diameter circular shape. It is observed that, in this kind of environments, second order reflections are particularly relevant due to the walls' high reflective nature. Globally, it is concluded that the Rayleigh distribution can be used to characterize fast fading effects with no significant loss of accuracy compared to the Rice one, since a low value of the Rice parameter is observed, being below 3.1 dB, even under Line-of-Sight conditions. Moreover, it is observed that, from the fast fading viewpoint, the best transmitter position is at the circle center. INDEX TERMS Body area networks, fading characterization, metallic structures, propagation modelling.

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Section: Introductionmentioning

confidence: 99%

“…In [11], a wideband channel characterization along a lift shaft on board a ship at 255. 6 MHz has been presented. The authors of [12] have performed an empirical study on board naval vessels, including path loss and delay spread in the range [0.8, 2.6] GHz at the machine and engine rooms and at a main starboard hallway.…”

Section: Introductionmentioning

confidence: 99%

Fast Fading Characterization for Body Area Networks in Circular Metallic Indoor Environments

et al. 2020

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“…The channel model parameters are described statistically and implementation guidelines in hospital environments are given in the work based on measurements. A novel statistical path loss model based on measurements taking into account the variability of height and the attenuation caused by the human beings at both frequencies, 6 and 8.5 GHz, under a hospital scenario is presented in [ 20 ]. It is shown that the proposed model is more flexible and accurate when compared with equivalent methodologies.…”

Section: Methodsmentioning

confidence: 99%

Implementation and Operational Analysis of an Interactive Intensive Care Unit within a Smart Health Context

López-Iturri

Aguirre

Trigo

et al. 2018

Sensors

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In the context of hospital management and operation, Intensive Care Units (ICU) are one of the most challenging in terms of time responsiveness and criticality, in which adequate resource management and signal processing play a key role in overall system performance. In this work, a context aware Intensive Care Unit is implemented and analyzed to provide scalable signal acquisition capabilities, as well as to provide tracking and access control. Wireless channel analysis is performed by means of hybrid optimized 3D Ray Launching deterministic simulation to assess potential interference impact as well as to provide required coverage/capacity thresholds for employed transceivers. Wireless system operation within the ICU scenario, considering conventional transceiver operation, is feasible in terms of quality of service for the complete scenario. Extensive measurements of overall interference levels have also been carried out, enabling subsequent adequate coverage/capacity estimations, for a set of Zigbee based nodes. Real system operation has been tested, with ad-hoc designed Zigbee wireless motes, employing lightweight communication protocols to minimize energy and bandwidth usage. An ICU information gathering application and software architecture for Visitor Access Control has been implemented, providing monitoring of the Boxes external doors and the identification of visitors via a RFID system. The results enable a solution to provide ICU access control and tracking capabilities previously not exploited, providing a step forward in the implementation of a Smart Health framework.

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“…There is a large number of studies related to the BAN propagation channel in different environments, e.g., [1] - [3], and especially for medical applications [4], [5]. Most of these studies are based on indoor measurements, such as rooms, corridors and similar environments [6], [7].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Channel Model for Body Area Networks in Circular Metallic Indoor Environments

et al. 2021

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In this paper, the wideband characterization of the propagation channel in circular metallic indoor environments is addressed, regarding Body Area Networks and 5G small cells, an analytical model for the dependence of the mean delay and the average delay spread on the circle radius, the working frequency and the distance between the transmitter and the receiver being proposed. The derivation of the model is initially done analytically, based on optical physics, after which simulation results allow to obtain the values of the coefficients. The simulator was previously assessed with measurements at 2.45 GHz in a passenger ferry room with a circular shape. For a random positioning of the transmitter and the receiver, and a given distance between them, it is observed that the mean delay and the delay spread increase linearly with the radius; furthermore, the mean delay increases quadratically with the distance, while the delay spread has a concave parabolic behavior, with the maximum being at a distance equal to the radius. In a practical case, regarding the positioning of an Access Point inside the room, it is recommended that it is done at the circle center, in order to reduce delay spread.

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Measurement and Modeling of Wireless Off-Body Propagation Characteristics Under Hospital Environment at 6–8.5 GHz

Cited by 18 publications

References 29 publications

Fast Fading Characterization for Body Area Networks in Circular Metallic Indoor Environments

Fast Fading Characterization for Body Area Networks in Circular Metallic Indoor Environments

Implementation and Operational Analysis of an Interactive Intensive Care Unit within a Smart Health Context

A Wideband Channel Model for Body Area Networks in Circular Metallic Indoor Environments

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