This paper presents a novel 28 GHz circularly polarized rectangular dielectric-resonator antenna (DRA) array for millimeter-wave (mmWave) off-body applications. A feed network incorporating cross slots was utilized in the DRA design to realize circular polarization (CP). In terms of free-space wavelength, λo, dimensions were (0.48λo × 0.48λo 0.27λo) at GHz. The simulated by dielectric layers wi...

Disasters are often accompanied by damage to critical infrastructure, including (wireless) communications infrastructure. Our solution for emergency communications is based on advanced networks: Generalized Access Networks (GANs), Body Area Networks (BANs) and Vehicular Networks, to support dynamic, resilient communication services for disaster management.

This paper presents the architecture of a complete communications platform for sensor-based applications. It covers from the direct communication with the sensors themselves to the most remote application modules. It has been divided into three levels: BAN (Body Area Network), LAN (Local Area Network) and WAN (Wide Area Network), and it uses wireless communications at all levels of the architec...

this is a survey of some recent applications of abstract algebra, and in particular group rings, to the `communications' areas.

C broadband mobile electronics with ultralow-power consumption and miniaturization in implantable semiconductor radio transceiver chips and sensors, healthcare and wellness is rapidly changing across the world. Consequently, new services and applications are emerging that will enable real-time medical sensing and treatment from a distance. Thus, taking ubiquitous medical care to a new level. La...

In this paper, on-body propagation modelling has been investigated applying various numerical computational techniques. Propagation measurements with body-worn antennas have been carried out at 2.4GHz inside and outside an anechoic chamber respectively for narrowband communication channel characterisation. Both simulation and measurement results have been also obtained at the UWB (Ultra Wide-Ba...

It is expected that Wireless Body Area Network (WBAN) will greatly improve the quality of our life because of its myriad applications for our human beings. However, one of the challenges is to design energy efficient communication protocols to support the reliable communication as well as to prolong the network lifetime. Cooperative communications have the advantage of spatial diversity to comb...

The concept of physiological time was introduced by Hill ( 1951)). He reasoned that as metabolic rate and longevity change with body size, time itself may be scaled. Hence, spans such as growth to maturity, gestation period and the time required for digestion transpire on a time scale dependent upon the body size of an animal. Since Hill’ s hypothesis, many of these rate variables have been exa...