Abstract not found

This paper describes the concept of sensor networks which has been made viable by the convergence of microelectro-mechanical systems technology, wireless communications and digital electronics. First, the sensing tasks and the potential sensor networks applications are explored, and a review

for such coordination. Directed diffusion is datacentric in that all communication is for named data. All nodes in a directed diffusion-based network are application-aware. This enables diffusion to achieve energy savings by selecting empirically good paths and by caching and processing data in-network (e.g., data

using a DLL-based Frequency Multiplier

When there are several controllable devices in a certain space, controlling them all in an efficient way requires much thought on the user interface and usability

All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately.

Abstract — The monolithic integration of Tunneling Diodes (TDs) with other semiconductor devices, creates novel quantum functional devices and circuits with unique properties: the Negative Differential Resistance (NDR) and the extremely low DC power consumption. In this paper we present the design, fabrication and characterization of a Self-Oscillating Mixer (SOM) based on InP-HEMT\TD technology. The circuit is based on a 2.526 GHZ VCO that draws a current of 1.3mA at 500mV and generates an output power of –21.5dBm on a 50: load. The SOM is able to down-convert RF signals in the 2.25–2.85 GHz band to an IF frequency in the 20-300 MHz band, with a conversion loss in the range 32-40 dB. I.

The capacity of ad-hoc wireless networks is constrained by the mutual interference of concurrent transmissions between nodes. We study a model of an ad-hoc network where n nodes communicate in random source-destination pairs. These nodes are assumed to be mobile. We examine the per

This paper proposes S-MAC, a medium-access control (MAC) protocol designed for wireless sensor networks. Wireless sensor networks use battery-operated computing and sensing devices. A network of these devices will collaborate for a common application such as environmental monitoring. We expect

Wireless Sensor Networks (WSNs) consist of small nodes with sensing, computation, and wireless communications capabilities. Many routing, power management, and data dissemination protocols have been specifically designed for WSNs where energy awareness is an essential design issue. The focus