Wideband Communication for Implantable and Wearable Systems

Yuce, Mehmet Rasit; Keong, Ho Chee; Chae, Moo Sung

doi:10.1109/tmtt.2009.2029958

Cited by 95 publications

(46 citation statements)

References 15 publications

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“…Computer simulations of in-body to on-body (IB2OB) communications, i.e., a wireless link between a sensor operating inside the human body and an on-body gateway device, have suggested that data rates as high as 100 Mbit/s are feasible using UWB [10], [11]. Nevertheless, an in-vivo experiment on a living porcine subject demonstrated a significantly lower data rate of 1 Mbit/s and a bit error rate (BER) of 10 −2 for an UWB link between a transmitter implanted at a maximal depth of 12 cm into the abdominal cavity and an on-body receiver [12].…”

Section: Introductionmentioning

confidence: 99%

In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals

Floor

Chávez-Santiago

Brovoll

et al. 2015

IEEE J. Biomed. Health Inform.

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Abstract-Ultra wideband (UWB) radio technology for wireless implants has gained significant attention. UWB enables the fabrication of faster and smaller transceivers with ultra low power consumption, which may be integrated into more sophisticated implantable biomedical sensors and actuators. Nevertheless, the large path loss suffered by UWB signals propagating through inhomogeneous layers of biological tissues is a major hindering factor. For the optimal design of implantable transceivers, the accurate characterization of the UWB radio propagation in living biological tissues is indispensable. Channel measurements in phantoms and numerical simulations with digital anatomical models provide good initial insight into the expected path loss in complex propagation media like the human body, but they often fail to capture the effects of blood circulation, respiration, and temperature gradients of a living subject. Therefore, we performed UWB channel measurements within 1-6 GHz on two living porcine subjects because of the anatomical resemblance with an average human torso. We present for the first time a path loss model derived from these invivo measurements, which includes the frequency-dependent attenuation. The use of multiple on-body receiving antennas to combat the high propagation losses in implant radio channels was also investigated. Index Terms-channel model, implant, in-body, in-vivo, path lossThis work is part of the MELODY Project-Phase II (Contract no. 225885), which is financially sponsored by the Research Council of Norway.

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Section: Introductionmentioning

confidence: 99%

In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals

Floor

Chávez-Santiago

Brovoll

et al. 2015

IEEE J. Biomed. Health Inform.

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“…One of the ways in which this can be accomplished is through the use of ultra-wide band (UWB) technology. Advantages of UWB technology include very high bandwidths (important for high-resolution image transmission from within the GI tract), low-power operation and the ability to accomplish high-accuracy ranging in challenging environments (Yuce et al, 2009;Chavez and Balasingham, 2013). Therefore, we focus on range-based localization using UWB signals in this paper.…”

Section: Figure 1 General Overview Of a Wireless Capsule Endoscopy Smentioning

confidence: 99%

In-Body Ranging for Ultra-Wide Band Wireless Capsule Endoscopy Using Neural Networks Based on Particle Swarm Optimization

Kanaan

Akay

Suveren

2018

Scitech

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ABSTRACT:We consider the problem of accurate in-body ranging for localization of a wireless capsule endoscope utilizing ultra-wide band (UWB) signaling. In this context, we explore the joint use of neural network structures and learning algorithms based on metaheuristics, an example of which is particle swarm optimization (PSO). The contributions of this paper are three-fold. First, we undertake a systematic performance analysis of the PSO technique for UWB-based in-body ranging and propose an improved version of the PSO algorithm. Second, we quantitatively compare the performance of PSO techniques against more traditional learning algorithms, such as Bayesian Regularization, LevenbergMarquardt and Single Conjugate Gradient. Third, we quantify the impact of activation functions used to define the neural network structure on performance. Our results indicate that PSO-based techniques can outperform traditional techniques by as much as 44%, depending on the activation functions used in the neural network.

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“…Since the average FCC PSD emission limit for on-body UWB transmissions is −41.3 dBm/MHz [22], the maximum average transmit power P ave is −14.3 dBm. With the duty cycle T w /T f , P o max = P ave * T f /T w = 4 dBm [23]. For the in-body transmissions, we set P i max ≤ 10 dBm considering the emission limit and safety inside the human body [23].…”

Section: Simulationmentioning

confidence: 99%

“…With the duty cycle T w /T f , P o max = P ave * T f /T w = 4 dBm [23]. For the in-body transmissions, we set P i max ≤ 10 dBm considering the emission limit and safety inside the human body [23]. According to the scale of the human …”

Section: Simulationmentioning

confidence: 99%

Joint optimal relay location and power allocation for ultra-wideband-based wireless body area networks

Ding

Dutkiewicz

Huang

2015

J Wireless Com Network

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In this paper, we study the joint optimal relay location and power allocation problem for single-relay-assisted ultra-wideband (UWB)-based wireless body area networks (WBANs). Specifically, to optimize spectral efficiency (SE) for single-relay cooperative communication in UWB-based WBANs, we seek the relay with the optimal location together with the corresponding optimal power allocation. With proposed relay-location-based network models, the SE maximization problems are mathematically formulated by considering three practical scenarios, namely, along-torso scenario, around-torso scenario, and in-body scenario. Taking into account realistic power considerations for each scenario, the optimal relay location and power allocation are jointly derived and analyzed. Numerical results show the necessity of utilization of relay node for the spectral and energy-efficient transmission in UWB-based WBANs and demonstrate the effectiveness of the proposed scheme in particular for the around-torso and in-body scenarios. With the joint optimal relay location and power allocation, the proposed scheme is able to prolong the network lifetime and extend the transmission range in WBANs significantly compared to direct transmission.

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Wideband Communication for Implantable and Wearable Systems

Cited by 95 publications

References 15 publications

In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals

In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals

In-Body Ranging for Ultra-Wide Band Wireless Capsule Endoscopy Using Neural Networks Based on Particle Swarm Optimization

Joint optimal relay location and power allocation for ultra-wideband-based wireless body area networks

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