Surender Soni

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The last few years have seen an increased interest in the potential use of wireless sensor networks (WSNs) in various fields like disaster management, battle field surveillance, and border security surveillance as described by Quaritsch (2010), Hart (2006), Bokareva (2006) and Dudek (2009). In such applications, a large number of sensor nodes are deployed,(More)
— Clustering in wireless sensor networks (WSNs) is an important technique to ease topology management and routing. Clustering provides an effective method for prolonging lifetime of a WSN. This paper proposes energy efficient multi-level clustering schemes for wireless sensor networks. Wireless sensor nodes are extremely energy constrained with a limited(More)
In CMOS circuits, the reduction of the threshold voltage due to voltage scaling leads to increase in sub threshold leakage current and hence, static power dissipation. In the nanometer technology regime, power dissipation and Process parameter variations have emerged as major design considerations. These problems continue to grow with leakage power becoming(More)
Wireless Sensor Networks (WSNs) are generally believed to be homogeneous, but some sensor nodes of higher energy can be used to prolong the lifetime and reliability of WSNs. This gives birth to the concept of Heterogeneous Wireless Sensor Networks (HWSNs). Clustering is an important technique to prolong the lifetime of WSNs and to reduce energy consumption(More)
A wireless sensor network is consists of hundreds or thousands of nodes that are densely deployed in a large geographical area. These nodes are commonly used for continuously monitoring applications. Also these sensor nodes have small batteries. The energy consumption is the main issue in WSN's. The efficient routing protocol should minimize the energy(More)
Wireless sensor networks (WSN) are sophisticated systems that are used to gather data from an unreachable and remote environment. WSN consists of base station and hundred to thousands of sensor nodes. The main design issues in WSN include efficient energy management and network lifetime. Most of the approaches assume the nodes to be homogenous, however they(More)
A wireless sensor network consists of large number of sensor nodes deployed on a large field and has limited battery lifetime which get depleted at a faster rate due to their communication and computation operation. These sensor nodes has the ability of sensing, computing and transmitting data from the harsh environment. Many communication protocols are(More)
One of the fundamental problems in wireless sensor networks (WSNs) is localization that forms the basis for many location aware applications. Localization in WSNs is to determine the physical position of sensor node based on the known positions of several nodes. In this paper, a range free, enhanced weighted centroid localization method using edge weights(More)