iosr-JECE   Volume-12 ~ Issue-4 ~ July-August 2017

Abstract:Wireless sensor network (WSN) technologies are increasingly employed in recent years for monitoring purposes in various fields ranging from the engineering industry to our immediate home environments due to their ability to intelligently monitor remote locations at low cost. There are various areas where research activities are going on in Wireless sensor networks. These are deployment , localization , Synchronization , Calibration , DataAggregation and Data Dissemination , Security , Middleware, Database Centric and Querying, etc One of popular area of interest is optimizing strategies of routing protocols with respect to energy utilizationof sensor nodes..............

Keywords: Modleach, sensor nodes, clustering, network lifetime, packets to BS

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Abstract: The design and development of a smart monitoring and controlling system for household electrical appliances in real time is implemented. The system principally monitors electrical parameters of household appliances such as voltage and current and subsequently calculates the power consumed. The novelty of this system is the implementation of the controlling mechanism of appliances in different ways. The developed system is a low-cost and flexible in operation and thus can save electricity expense of the consumers. The prototype has been extensively tested in real-life situations and experimental results are very encouraging

Keywords: Energy efficient algorithm, Manet, total transmission energy, maximum number of hops, network lifetime

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Abstract: In cognitive radio adhoc networks, licensed users are known as primary users and unlicensed users are secondary users. The unlicensed users need to access the spectrum of licensed users with negligible interference to primary and other secondary users. Hence proper power transmission control is important to ensure interference free transmission. Location awareness is also helpful for concurrent transmission and reception region where secondary and primary users can coexists. In this research paper we examined spectrum sharing state without spectrum sensing of fixed............

Keywords: Adhoc networks, Cognitive radio, Primary user, Power control, Secondary user.

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