A New Improved Range Free Algorithm Based on DV-Hop in Wireless Sensor Network

Provided by: Journal of Communications
Topic: Enterprise Software
Format: PDF
In emerging wireless sensor networks application, localization issue attracts the most attention in recent years. DV-Hop algorithm is a typical range free nodes localization algorithm in WSNs but the localization accuracy of sensor nodes is still low for some applications. In this paper, an improved algorithm based on DV-Hop algorithm is proposed. In the improved algorithm, the localization accuracy is increased from two aspects. Firstly, the improved algorithm proposes a new method and calculates the average hop distance. Secondly, the improved algorithm increases the numerical computation accuracy and improves the stability of the operation by solving the equations through QR decomposition.

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