Improved ZigBee module based on fuzzy model for indoor positioning system

This paper develops the study about parking spaces detection in indoor environments, implementing a wireless sensor networks (WSNs) based on Zigbee technology. With the popularity of digital communications technology, there are many people engaged in wireless sensor network applications. Indoor positioning technology is very important area among wireless sensor network applications. In this paper, the fuzzy model converted the Received Signal Strength Indicator (RSSI) into the distance. We combine fuzzy with Minimum Mean Square Error (MMSE) algorithm estimation for positioning.