Considerations about the Signal Level Measurement in Wireless Sensor Networks for Node Position Estimation.

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ID: 55966
2019
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Abstract
Wireless Sensor Networks (WSN) are widely used in different monitoring systems. Given the distributed nature of WSN, a constantly increasing number of research studies are concentrated on some important aspects: maximizing network autonomy, node localization, and data access security. The node localization and distance estimation algorithms have, as their starting points, different information provided by the nodes. The level of signal strength is often such a starting point. A system for Received Signal Strength Indicator (RSSI) acquisition has been designed, implemented, and tested. In this paper, experiments in different operating environments have been conducted to show the variation of Received Signal Strength Indicator (RSSI) metric related to distance and geometrical orientation of the nodes and environment, both indoor and outdoor. Energy aware data transmission algorithms adjust the power consumed by the nodes according to the relative distance between the nodes. Experiments have been conducted to measure the current consumed by the node depending on the adjusted transmission power. In order to use the RSSI values as input for distance or location detection algorithms, the RSSI values can't be used without intermediate processing steps to mitigate with the non-linearity of the measured values. The results of the measurements confirmed that the RSSI level varies with distance, geometrical orientation of the sensors, and environment characteristics.
Reference Key
dolha2019considerationssensors Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dolha, Stelian;Negirla, Paul;Alexa, Florin;Silea, Ioan;
Journal sensors
Year 2019
DOI
E4179
URL
Keywords
rssi (received signal strength indicator) acquisition adjusted transmission power non-linearity of the measured values sensor location estimation sensor networks

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