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In This paper comparison results are presented for receiver used for UWB communication system .we have taken in to account of impact of all the parameter such as Rake fingers and equalization tap on the error performance and SNR. Rake receivers can be employed since they are able to provide multipath diversity .another aspect is to combate the inter-symbol-interference(ISI) ,this distorts the t...

This work presents the design, construction and testing of a new embedded sensor system for monitoring concrete curing. A specific mote has been implemented to withstand the aggressive environment without affecting the measured variables. The system also includes a real-time monitoring application operating from a remote computer placed in a central location. The testing was done in two phases:...

The ability to overhear and analyse packets is essential for the development of protocols for IEEE 802.15.4-based Wireless Sensor Networks. Besides a number of commercial hardware and software offers, only very few projects put effort in developing such solutions. This demonstration shows a simple yet powerful approach to that problem. By using a T-Mote Sky sensor node with the Contiki operatin...

The Smart Dust project aims to explore the limits of system integration by packing an autonomous sensing, computing, and communication node into a cubic millimeter mote that will form the basis of massive distributed sensor networks, thus demonstrating that a complete system can be integrated into 1 mm3. Effectively exploring this space requires new approaches to design that emphasize energy an...

Wireless sensor networks (WSNs) are used for various pervasive and ubiquitous applications. As WSNs consist of a large number of nodes that are deployed in remote and inaccessible places, there is a need for realistic power consumptions model that can be used to estimate the network life time, connectivity, and coverage. In this work, a discrete radio model is used to calculate more realistic p...

This paper focuses on the development of new storage model by using cloud computing for mobile devises. The concept of cloud computing has been applied to mobile devices for improving the existing model (battery time and data saving) of mobile devices. In the recent eras, different types of cloud computing techniques have been used for improving the efficiency of mobile devices. The paper has c...

MIT Technology Review lists sensor networks as one of “Ten Emerging Technologies That Will Change the World” [1]. This paper extends our earlier paper [7], and describes three additional lab exercises, derived from the TinyOS tutorials and using MicaZ motes, that are suitable for activity-driven teaching of sensor networks to undergraduate students. One exercise includes some actual coding, and...

We propose a decentralized algorithm to calculate the control signals for lights in wireless sensor/actuator networks. This algorithm uses an appropriate step size in the iterative process used for quickly computing the control signals. We demonstrate the accuracy and efficiency of this approach compared with the penalty method by using Mote-based mesh sensor networks. The estimation error of t...

• Great Duck Island [SMP04]. Szewczyk et al. have used two sensor patches, gateways, base station and satellite WAN link for their experiments. A gateway node interfaces a sensor patch to the base station and consists of a mote with 14dBi high gain yagi antenna (point-to-point, directional). The base station collects the data from the sensor patches in the database and makes the data available ...