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Despite the fact that cooperative localization approaches stand well in Wireless Sensor Networks (WSNs), they impose challenge of increased energy consumption resulting from the important communication overhead required to accomplish the localization task. In this paper, we developed an Energy Aware Cooperative Localization approach (EACL) based on using a recursive localization system. Obviously,...
To obtain a trade-off between location accuracy and implementation cost, recursive localization schemes are being pursued as a cost-effective alternative to more expensive localization approaches, where localization information increases progressively as new nodes compute their positions and become themselves reference nodes. A strategy is then required to control and maintain the distribution of...
In cognitive radio networks (CRNs), primary-user (PUs) localization is a key aspect for improving network performance in terms of reliability and power adaptation. However, energy efficiency becomes a critical issue for localization in CRNs due to the limited energy storage in CR devices. In this paper, we propose an energy-efficient cooperative localization algorithm (EE-CLA) for PU positioning using...
The main concern in range-free localization is getting the high accuracy despite sensor has irregular radio pattern and implemented in anisotropic network. Nevertheless not much study on how the localization algorithm can deplete the sensors' energy even though its fundamental approach are highly depending on the connectivity among the nodes and anchors. In this paper three range-free localization,...
The localization problem in wireless sensor networks often raises the crucial question that to what extent higher location estimation accuracy can be achieved at the cost of additional energy consumption. To obtain a trade off between location accuracy and energy consumption in wireless sensor networks, it is necessary to have a global vision where both the localization scheme and its induced computational...
In wireless sensor networks, estimating location of node is important for routing efficiency and location-based services. Traditional Localization techniques are using by distance, hop-count, connectivity, and etc. But the accuracy of these algorithms is highly dependent on the environment and quality of the transmission equipment and they have not only the localization errors but also high energy...
In this paper we have introduced a new efficient algorithm “Sub-sector Alignment Polar Coordinate Algorithm” (SAPCA) for the localization of a wireless sensor network. There are several different concepts incorporated in the algorithm to make it efficient such as concept of polar coordinates, sub-sectors, pipelining etc. This algorithm is better than the simple layering and the triangulation algorithms...
The sensor node localization is a key technology to make application feasible and meaningful. This paper presents and analyzes a proposed localization algorithm by employing a mobile anchor node, called mobile maximum rectangle localization scheme. In the proposed scheme, a mobile anchor node moves around in sensor area and broadcasts beacon message. The sensor node uses the geometry technique to...
Localization problem in wireless sensor networks (WSNs) has been widely studied recently. However, most previous work simply assume that all the nodes stay awake during the localization phase. This assumption clearly overlooks the common scenario that sensor nodes are usually duty-cycled in order to save energy. In this paper we propose a kind of novel DV (distance vector)-based localization algorithm...
In underwater sensor networks, localization is one of the most important issues because sensor nodes are considerably difficult to be deployed at determined locations. Since range-based schemes require additional device and precise time synchronization for measuring distances in underwater environments, range-free schemes are promising in the view point of energy consumption and implementation. Coarseness...
DV-Hop and Centroid-based algorithms are fundamental methods in wireless sensor networks. Nevertheless, they both have disadvantages. In order to utilize these two methods efficiently, a new hybrid range-free localization algorithm which combines the two methods is proposed in this paper. The average localization error rate of this hybrid algorithm is discussed and the algorithm energy consumption...
Location information is of utmost importance for most applications in wireless sensor networks. Recent localization schemes have been categorized into range and range-free based techniques. Obvious inclination is towards range free algorithms since they do not rely on special hardware that would be required in range based algorithms. In the most proposed range-free algorithms, nodes estimate their...
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