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In this paper we analyze the accuracy of narrowband and wideband localization techniques inside the homogeneous human tissues using a fast finite difference time domain (FDTD) technique. In the narrowband localization, the phase of the received carrier signal is used for ranging measurements, whereas for the wideband transmission, the time of arrival (TOA) of the received signal is used. For fast...
Recently, a micro or nano size wireless telecommunications device such as a wireless implant capsule endoscope has been researched and developed. These wearable and implanted wireless devices are quite useful to remotely monitor various vital information, for example ECG, EEG, etc. And we use manipulators for medical treatment. In order to connect several medical sensors and actuators in and on human...
The estimate of adoption rates of Personal Digital Assistants (PDAs) and Smart phones among physicians and dentists is required to accurately determine how much PDA devices can improve the quality of care, save patients' lives, increase productivity and ultimately reduce health-care cost. This research worked towards finding Prevalence rates of PDA and Smartphone among the physicians and dentists...
This paper provides an overview of a concept for a Smart Skin, for enabling tactile prosthetics that provide for a natural sensation of touch. The solution embeds miniature, ultra-low power, wireless sensors into the silicone coating of the prosthetic. The solution offers advantages in terms of scalability, ability to place the sensors almost anywhere, fault tolerance and potential ease of manufacturing.
The paper describes a coexistence study of IEEE 802.15.6 UWB devices with other UWB systems, in particular IEEE 802.15.4a (pico-nets) and IEEE 802.15.4f (RFID). At the time of writing this paper, IEEE 802.15.6 and IEEE 802.15.4f are in the last phase before publication. Hence, a brief summary of both PHYs is introduced. On the other hand, IEEE 802.15.6 UWB PHY includes IR-UWB and FM-UWB technologies...
Super-regenerative receiver is one of the potential candidates to achieve ultra low power wireless communication in body area network (BAN). The main limitations of the super-regenerative receiver include the difficulty in choosing a good quench waveform to optimize its sensitivity and selectivity, and its significantly degraded performance in the presence of interference. To address the above problems,...
The use of wireless sensors in healthcare has given rise to a new field called wireless body area networks (BAN). A sensor node used in a BAN has limited resources in terms of processing power, battery and memory. It is of outmost importance that the use of power is controlled in such a way that these nodes work longer. Media access control (MAC) layer directly involves with the transceiver which...
The main bottleneck to achieve energy autonomy in body area networks (BAN) is the design of an ultra low power yet reliable wireless system. It is well known that super-regenerative receiver has the advantage of enabling ultra low power. However, in many cases, it has to use on-off keying (OOK) modulation due to the embedded envelope detector and thus has limited reliability. To improve its performance...
In this paper, we discuss the application of machine-to-machine (M2M) communications to healthcare. We analyze some of the enabling technologies of M2M and present an overview of the challenges, research opportunities, and standardization activities of this exciting area.
In this paper we present an experimental campaign which shows the interference levels in the ISM band in a typical City Hospital. This first result leaded us to propose a wireless real-time ECG monitoring system which does not use the ISM band. The performance of the proposed hardware solution has been proven in a real situation by means of experimental trials in the emergency ward of a real hospital.
Ground Penetrating Radar (GPR) is a method for estimation of underground structures by sending and receiving electromagnetic. With Ultra Wideband (UWB) signal, GPR is expected to improve resolution for detection of objects in underground. But there are problems that attenuation of waves from deep objects and confusion of waves from different objects. We propose a signal processing for UWB GPR to improve...
In this paper, results of an indoor experiment for 2.45 GHz dynamic wearable wireless body area network (WBAN) using multiport vector network analyzer is reported. Temporal changes of propagation characteristics for two human male subjects are measured for six antenna positions on-body simultaneously. Statistical characteristics and correlations between individual receiving points are reported.
This paper presents two energy-efficient techniques to enhance the channel quality of body channel communication (BCC). From Maxwell's equations, the complete equation of electric field on the human body is obtained to develop the theoretical transmission mechanism of BCC, which consists of a combination of the quasi-static near-field coupling, and surface wave far-field propagation mechanism. Based...
We have developed a patient monitoring system in a hospital which can remotely and continuously monitor the state of a patient in a room, such as the electrocardiogram (ECG), body surface temperature and three-dimensional (3D) acceleration, with a wireless vital sensor. In this paper, we show the detail on the elements of the system, namely, the capability of the wireless vital sensor, diversity reception...
The paper describes technique for differential detection of Impulse Radio Ultra-Wideband (IR-UWB) Pulse Position Modulated (PPM) symbols. An expression for probability of error in noise is derived. The numerical results show the method's performance enhancement compared to the energy detection in noise and considerable performance enhancement in multiuser interference. The method is applicable to...
One of promising application offered by implant body area networks (BANs) is a capsule endoscope localization system. To begin with, this paper performs finite-difference time-domain (FDTD) simulations on implant BAN propagation with a numerical human model, and investigates the propagation characteristics of implant BAN signals at 400 MHz medical implant communication service (MICS) band. Then, the...
Wireless health monitoring systems are suggested for use in the health care of the elderly to enable independent but secure living for as long as possible. Activity monitoring is highly valued by welfare and health personnel because it gives an overview of the well-being of the elderly. In this paper, a state transition diagram based activity classification MATLAB-algorithm is described. The state...
Wireless health monitoring can be used in health care for the aged to support independent living, either at home or in sheltered housing, for as long as possible. The most important single monitoring need with respect to security and well-being of the elderly is fall detection. In this paper, a two-threshold MATLAB-algorithm for fall detection is described. The algorithm uses mainly tri-axial accelerometer...
In this paper, we apply HARQ to a wireless feedback control system for realizing high reliable communication. In the wireless control system, since the quantity of state of a control system influences the stability of the system, we propose the new HARQ system which determines a code rate and retransmission judgment according to the quantity of state. As a result, proposal HARQ solved the problem...
The use of end-to-end communication systems as a medium of delivery for electronic healthcare (eHealth) services is considered to be uncertain, with respect to its reliability leading to hesitation in acceptance of such services. There exist different influential dimensions that pose stringent requirements on end-to-end communication systems, influence user perception and might hinder user acceptance...
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