Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Challenges: device-free passive localization for wireless environments
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
MODEL: moving object detection and localization in wireless networks based on small-scale fading
Proceedings of the 6th ACM conference on Embedded network sensor systems
Survey of Wireless Indoor Positioning Techniques and Systems
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
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This paper presents a smart ZigBee indoor security system based on the small-scale fading effect of RF signals. The received signal strength in a wireless network stays stable with low variances in a closed indoor environment. The movement of objects will induce a small-scale fading effect, resulting in dramatic changes of the signal strength. The main idea is to deploy a ZigBee network in the detection area and monitor the received signal strength of the signals in the network to detect environment changes. By analyzing the small-scale fading effect, we propose the simple rolling-window algorithm. Experiment results demonstrate the ability of the system to detect moving objects accurately.