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Determination of the Reliability Interval of Outdoor Channel Model in 802.15.4/ZigBee Networks

Héctor KASCHEL
Departamento de Ingeniería Eléctrica, Universidad de Santiago de Chile
Av. Ecuador 3519, Estación Central, Santiago, Chile

Gustavo QUEZADA
Departamento de Ingeniería Eléctrica, Universidad de Santiago de Chile
Av. Ecuador 3519, Estación Central, Santiago, Chile

Ricardo VEGA
Departamento de Ingeniería Química, Universidad de Santiago de Chile
Av. Ecuador 3519, Estación Central, Santiago, Chile

Luis SÁNCHEZ
Departamento de Matemáticas y Ciencias de la Computación, Universidad de Santiago de Chile
Av. Ecuador 3519, Estación Central, Santiago, Chile

José MARDONES
Departamento de Ingeniería Eléctrica, Universidad de Santiago de Chile
Av. Ecuador 3519, Estación Central, Santiago, Chile

Abstract: Within the framework of the implementation of a wireless network of nodes under the IEEE802.15.4/Zigbee standard, the values obtained from experimental measurements of power as a function of distance between nodes in free space are analyzed. A propagation loss model is proposed and a statistical analysis is made to determine the reliability of the prediction of the distance between nodes as a function of the power measured at the receiver. This analysis confirms that the predictions obtained from the proposed model and from widely used models, are not appropriate for determining, with a high degree of certainty, the distance between transmitter and receiver due to the variability of the data.

Keywords: Wireless Sensor Network, Prediction methods, Outdoor, Zigbee, Channel models, Propagation.

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CITE THIS PAPER AS:
Héctor KASCHEL, Gustavo QUEZADA, Ricardo VEGA, Luis SANCHEZ, José MARDONES, Determination of the Reliability Interval of Outdoor Channel Model in 802.15.4/ZigBee Networks, Studies in Informatics and Control, ISSN 1220-1766, vol. 20 (2), pp. 187-192, 2011.