作者: S.K. Wahba , J.O. Hallstrom , K.D. LaForce , J.L. Fisher
DOI: 10.1109/SENSORCOMM.2007.24
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摘要: We present the results of extensive field experiments designed to evaluate precise relationship between wireless link quality, radio power level, and transmission distance in outdoor embedded deployments. focus on ZigBee networks, using Tmote Sky nodes, a popular commercial hardware platform for sensor systems. The are used develop piece-wise regression model suitable pre-deployment quality prediction. characterize contexts which provides high accuracy, discuss potential threats validity.