UWB Channel Measurements for Hand-Portable Devices: A Comparative Study

Abstract-Ultra-wideband (UWB) systems have emerged as a possible solution for future wireless in-body communications. However, in-body channel characterization is complex. Animal experimentation is usually restricted. Furthermore, software simulations can be expensive and imply a high computational cost. Synthetic chemical solutions, known as phantoms, can be used to solve this issue. However, achieving a reliable UWB phantom can be challenging since UWB systems use a large bandwidth and the relative permittivity of human tissues are frequency dependent. In this paper, a measurement campaign within 3.1-8.5 GHz using a new UWB phantom is performed. Currently, this phantom achieves the best known approximation to the permittivity of human muscle in the whole UWB band. Measurements were performed in different spatial positions, in order to also investigate the diversity of the in-body channel in the spatial domain. Two experimental in-body to in-body (IB2IB) and in-body to on-body (IB2OB) scenarios are considered. From the measurements, new path loss models are obtained. Besides, the correlation in transmission and reception is computed for both scenarios. Our results show a highly uncorrelated channel in transmission for the IB2IB scenario at all locations. Nevertheless, for the IB2OB scenario, the correlation varies depending on the position of the receiver and transmitter.Index Terms-Body area network, in-body communications, path loss, ultra-wideband (UWB) phantom, uncorrelated channel.

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“…Further details of this antenna are given in [21]. Hereinafter, we refer to this antenna as a large antenna.…”

Section: Antennasmentioning

confidence: 99%

Spatial In-Body Channel Characterization Using an Accurate UWB Phantom

Andreu

Castelló-Palacios

Garcia-Pardo

et al. 2016

IEEE Trans. Microwave Theory Techn.

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“…We also used an Ultra Wide Band patch antenna designed and made in the Institute of Telecommunication and Multimedia Applications (iTeam) [16] with a selected operation frequency of 5.4 GHz. Fig.…”

Section: Measurement Campaignmentioning

confidence: 99%

Delay spread in mmwave bands for indoor using Game Engines 3D Ray based Tools

Navarro

Ibarra

Escalante

et al. 2016

2016 10th European Conference on Antennas and Propagation (EuCAP)

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Simulation results of channel parameters using a Game Engine Ray Based Tool in different operating systems with different hardware architectures and using an open source 3D modeling tool for an indoor scenario are presented in this paper. We present simulation results and compare them with a set of measurements for an indoor scenario in the 5.4 GHz band, obtaining good matches between the rays traced by the tool and measurements for delay spread.

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“…however, considering the high data rates generated by implantable neural sensors, Bluetooth does not provide enough capacity in practice. Future applications will probably start to exploit technologies able to provide higher data rates as Ultra Wideband (UWB) [181], [175], [174]. UWB presents several characteristics that make it very attractive for this particular application:…”

Section: Bluetooth-3g Transmission Resultsmentioning

confidence: 99%

“…The figure is extracted from [194]. All presented parameters are listed in Table 8 We therefore derive that normalized small scale amplitudes for all the measurements from APDPs are log normal distributed as (5)(6)(7)(8)(9)(10)(11), where x is the small scale amplitude. Distribution parameters  and  correspond to the mean and standard deviation of the associated normal distribution.…”

Section: Inverse Fourier Transform (Ifft)mentioning

confidence: 99%

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Real-time signal detection and classification algorithms for body-centered systems

Sebastiá¹

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UWB Channel Measurements for Hand-Portable Devices: A Comparative Study

Cited by 21 publications

References 9 publications

Spatial In-Body Channel Characterization Using an Accurate UWB Phantom

Spatial In-Body Channel Characterization Using an Accurate UWB Phantom

Delay spread in mmwave bands for indoor using Game Engines 3D Ray based Tools

Real-time signal detection and classification algorithms for body-centered systems

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