An Improved WSN Localization Algorithm

Lu, Songwu; Xie, Jinyang; Pang, Lili

doi:10.1109/cieec.2018.8745760

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…In contrast, sensor nodes in an anisotropic network are unevenly distributed. If these sensors' positions are unknown, the data collected is useless until and unless the most feasible exact location can be estimated [2]. Even though several analyses of the relevant literature have been conducted, localization remains a complex and unsolved problem.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Localization Efficiency and Accuracy in Wireless Sensor Networks

Fawad

Khan

Ullah

et al. 2023

Sensors

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Accuracy is the vital indicator in location estimation used in many scenarios, such as warehousing, tracking, monitoring, security surveillance, etc., in a wireless sensor network (WSN). The conventional range-free DV-Hop algorithm uses hop distance to estimate sensor node positions but has limitations in terms of accuracy. To address the issues of low accuracy and high energy consumption of DV-Hop-based localization in static WSNs, this paper proposes an enhanced DV-Hop algorithm for efficient and accurate localization with reduced energy consumption. The proposed method consists of three steps: first, the single-hop distance is corrected using the RSSI value for a specific radius; second, the average hop distance between unknown nodes and anchors is modified based on the difference between actual and estimated distances; and finally, the least-squares approach is used to estimate the location of each unknown node. The proposed algorithm, named Hop-correction and energy-efficient DV-Hop (HCEDV-Hop), is executed and evaluated in MATLAB to compare its performance with benchmark schemes. The results show that HCEDV-Hop improves localization accuracy by an average of 81.36%, 77.99%, 39.72%, and 9.96% compared to basic DV-Hop, WCL, improved DV-maxHop, and improved DV-Hop, respectively. In terms of message communication, the proposed algorithm reduces energy usage by 28% compared to DV-Hop and 17% compared to WCL.

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Section: Introductionmentioning

confidence: 99%

Enhancing Localization Efficiency and Accuracy in Wireless Sensor Networks

Fawad

Khan

Ullah

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Thus, positions of sensor nodes should be known a priori before to run a WSN application, and so the background stage in most WSN applications is the localization process. In this stage, the geographic-location must be discovered using RF transmissions with neighboring sensors and specific algorithms [ 7 , 8 , 9 , 10 , 11 ]. An interesting research dealing with multi-hop localization is presented in [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

A Weighted and Distributed Algorithm for Range-Based Multi-Hop Localization Using a Newton Method

Diaz-Roman

Mederos

Sifuentes

et al. 2021

Sensors

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Wireless sensor networks are used in many location-dependent applications. The location of sensor nodes is commonly carried out in a distributed way for energy saving and network robustness, where the handling of these characteristics is still a great challenge. It is very desirable that distributed algorithms invest as few iterations as possible with the highest accuracy on position estimates. This research proposes a range-based and robust localization method, derived from the Newton scheme, that can be applied over isotropic and anisotropic networks in presence of outliers in the pair-wise distance measurements. The algorithm minimizes the error of position estimates using a hop-weighted function and a scaling factor that allows a significant improvement on position estimates in only few iterations. Simulations demonstrate that our proposed algorithm outperforms other similar algorithms under anisotropic networks.

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An Improved WSN Localization Algorithm

Cited by 2 publications

References 7 publications

Enhancing Localization Efficiency and Accuracy in Wireless Sensor Networks

Enhancing Localization Efficiency and Accuracy in Wireless Sensor Networks

A Weighted and Distributed Algorithm for Range-Based Multi-Hop Localization Using a Newton Method

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