Open-source testbed for Body Area Networks: 200 sample/sec, 12 hrs continuous measurement

Hanlen, Leif; Chaganti, Vasanta; Gilbert, Ben; Rodda, David; Lamahewa, Tharaka A.; Smith, David B.

doi:10.1109/pimrcw.2010.5670518

Cited by 51 publications

(48 citation statements)

References 12 publications

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“…The walking scenario exhibits relatively low spatial cross-correlation coefficients, as spatial crosscorrelation is generally considered to be significant for values of 0.7 or greater. This result is also confirmed by the work in [15]. Further, the cross-correlations vary dramatically with the network deployment, including the placement of the hub and sensors, surrounding environment and transceiver's direction.…”

Section: Cross-correlation and Channel Gain Differencesupporting

confidence: 73%

“…Inspired by the testbed design in [15], we construct our new wireless transceiver from easy-assembled and widely available commercial hardware modules. As illustrated in Fig.…”

Section: A Transceiver Implementationmentioning

confidence: 99%

“…As demonstrated in [15] and [16], in the narrowband communication environments the on-body channels show prominent reciprocity, which means the channel profiles of downlink and uplink are the same. Moreover, as the two sensors record the corresponding RSSI almost simultaneously, the downlinks are a better choice for the cross-correlation analysis.…”

Section: B Measurement Environment and Proceduresmentioning

confidence: 99%

See 2 more Smart Citations

Measurement-Based Characterizations of On-Body Channel in the Human Walking Scenario

Zhang

Safaei

Tran

2017

2017 IEEE 85th Vehicular Technology Conference (VTC Spring)

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In Wireless Body Area Networks (WBANs), on-body channels undergo temporal variations predominantly because of the body motion and shadowing of tissue. This paper focuses on a common human activity, walking, to explore the characteristics of the dynamic on-body propagation channel. A customized portable wireless sounder is built and utilized to collect the original on-body channel data both for the indoor and outdoor environments. We focus on exploring the second-order statistics of the channel gain variation during walking, including the temporal autocorrelation, the cross-correlation and the channel gain discrepancy between the two correlated links. This channel characterization facilitates more efficient designs and evaluations of WBAN systems, including more efficient network resource allocation and more efficient deployment of cooperative communication. Abstract-In Wireless Body Area Networks (WBANs), on-body channels undergo temporal variations predominantly because of the body motion and shadowing of tissue. This paper focuses on a common human activity, walking, to explore the characteristics of the dynamic on-body propagation channel. A customized portable wireless sounder is built and utilized to collect the original on-body channel data both for the indoor and outdoor environments. We focus on exploring the second-order statistics of the channel gain variation during walking, including the temporal autocorrelation, the cross-correlation and the channel gain discrepancy between the two correlated links. This channel characterization facilitates more efficient designs and evaluations of WBAN systems, including more efficient network resource allocation and more efficient deployment of cooperative communication.

show abstract

Section: Cross-correlation and Channel Gain Differencesupporting

confidence: 73%

“…Inspired by the testbed design in [15], we construct our new wireless transceiver from easy-assembled and widely available commercial hardware modules. As illustrated in Fig.…”

Section: A Transceiver Implementationmentioning

confidence: 99%

Section: B Measurement Environment and Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

Measurement-Based Characterizations of On-Body Channel in the Human Walking Scenario

Zhang

Safaei

Tran

2017

2017 IEEE 85th Vehicular Technology Conference (VTC Spring)

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“…More details about the hardware can be found in [29]. As demonstrated in [30,31], in narrowband communication environments, the on-body channels show prominent reciprocity, which means the channel profiles of downlink and uplink are around the same. Therefore, the channel gain can be estimated by the measurement of downlinks (from the hub to the sensors).…”

Section: On-body Channelmentioning

confidence: 99%

A Novel Cooperation-Based Network Coding Scheme for Walking Scenarios in WBANs

Zhang

Safaei

Tran

2017

Wireless Communications and Mobile Computing

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In Wireless Body Area Networks (WBANs), the tradeoff between network throughput and energy efficiency remains a key challenge. Most current transmission schemes try to cope with the challenge from the perspective of general Wireless Sensor Networks (WSNs), which may not take the peculiarities of WBAN channels into account. In this paper, we take advantage of the correlation of on-body channels in walking scenarios to achieve a better tradeoff between throughput and energy consumption. We first analyze the characteristics of on-body channels based on realistic channel gain datasets, which are collected by our customized wireless transceivers in walking scenarios. The analytical results confirm the rationale of our newly proposed transmission scheme A3NC, which explores the combination of the aggregative allocation (AA) mechanism in MAC layer and the Analog Network Coding (ANC) technique in PHY layer. Both theoretical analyses and simulation results show that the A3NC scheme achieves significant improvement in upload throughput and energy efficiency, compared to the conventional approaches.

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“…This was enabled by the use of small wearable radios operating at 2.36 GHz. A full description of the wearable radios can be found in [5]. Samples were taken over a period of two hours for each subject, with three transmitters (at the chest, right hip and left hip) that also acted as receivers, and seven other receivers, placed on the subjects' bodies.…”

mentioning

confidence: 99%

Cooperative receive diversity for coded GFSK body-area communications

Dong

Smith

2011

Electron. Lett.

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Performance of cooperative communications receive diversity, with relays, for the everyday body-area-network (BAN) radio channel is determined, based on extensive BAN measurements. In accordance with an option for physical layer transmission in the IEEE 802.15.6 BAN draft standard, BCH-coded Gaussian frequency-shift keying (GFSK) modulation is considered at 2.4 GHz carrier frequency. Large improvements over single-link communications are demonstrated with the use of one and two on-body relays, with cooperative selection combining and maximum-ratio combining. The importance of careful relay placement is also demonstrated.

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Open-source testbed for Body Area Networks: 200 sample/sec, 12 hrs continuous measurement

Cited by 51 publications

References 12 publications

Measurement-Based Characterizations of On-Body Channel in the Human Walking Scenario

Measurement-Based Characterizations of On-Body Channel in the Human Walking Scenario

A Novel Cooperation-Based Network Coding Scheme for Walking Scenarios in WBANs

Cooperative receive diversity for coded GFSK body-area communications

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