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Increased life expectancy and rising medical expenses impose big issues for proper health care and monitoring. Wireless Body Area Networks (WBANs), a group of small sensor nodes attached inside, on or around the human body, were introduced to meet this requirement. On body topology disconnections occur due to ultra short range radio links, unpredictable RF attenuation and human postural body movements...
Wireless Body Area Network (WBAN) is an excellent technology for chronic healthcare monitoring applications. In which, sensor nodes are connected wirelessly in, on or near the human body and also responsible for Data Collection, Data Processing and Data Transmission. Sensor nodes are generally powered by small batteries with sturdily restricted energy resources, so minimizing the energy consumption...
The traditional electrical grid has a lot of challenges and the conversion of electrical grid into a smarter grid has become a hotter research topic in the past few decades. This paper aims to design a module for solving the issues like global warming, unreliable power supply, and automated control on power lines by enabling power line communication (PLC) for the integration of information and communication...
Wireless Body Area Networks (WBANs) is one of the most promising approaches for improving the quality of life, by allowing remote patient monitoring and other ubiquitous health monitoring applications. In this type of networks, traffic routing plays an important role, which collects the information from bio sensors and sends it towards the sink. Some data are very critical under certain situations...
We describe our work on engineering nonlinear optical devices using quantum dots coupled to optical resonators. These systems enable large optical Stark shifts and all optical switching with low photon numbers.
We show that integrating waveguides in photonic crystals with cavities coupled to quantum dots leads to highly efficient nonlinear effects at low photon numbers.
With the growing popularity of wireless mobile ad hoc networks(MANETs), many security concerns have arisen from MANETs especially the misbehaving nodes pose a major threat. Node misbehaviour in ad hoc network is caused by lack of cooperation and goes under the name node selfishness. A selfish node does not directly intent to damage other nodes with active attacks but it simply does not cooperate in...
We propose and analyze an all-optical switch based on quantum-dots (QDs) embedded in a distributive Bragg reflector (DBR) cavity. The QDs behave as saturable absorbers that modify the cavity reflectivity. The device exploits the guided in-plane modes of the DBR to fully separate the control pulse from the input signal. We analyze the performance of the switch under realistic experimental conditions...
We describe our work on engineering nonlinear optical devices using quantum dots coupled to optical resonators. These systems enable large optical Stark shifts and all optical switching with only a few photons.
We observe a transparency in the transmission spectrum of a photonic crystal cavity mode coupled to a waveguide due to the presence of a strongly coupled quantum dot in the cavity. At high pump powers the QD is saturated, and the bare cavity spectrum is recovered.
Recent advances in Wireless Sensor Networks (WSN) now witness the increased interest in the potential use in applications like disaster management, combat field reconnaissance, border protection and security surveillance. Sensors are expected to be remotely deployed in large numbers and operate autonomously in unattended environments. Many routing protocols have been specifically designed for WSNs...
The increasing demand for broadband services is causing the cellular network providers to consider for the integration of Wireless LAN with GPRS. WLAN is having higher data rate but low coverage area but GPRS is having lower data rate but with high coverage area. So integrating these two heterogeneous networks will lead to utilization of advantages of both and can increase the system throughput. The...
A protocol is presented for generating entanglement between spatially separated quantum dots with different emission wavelengths and radiative lifetimes. This protocol can be practically implemented in semiconductor systems where emitters suffer from large inhomogeneous broadening.
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