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In this paper, a linear method is proposed to determine the distance according to RSSI, which avoids the traditional disadvantages of low effectiveness, high cost greatly. And two measures, first and second filtering, are taken to discard all the incorrect information and improve the accuracy for location.
The proliferation of wireless technologies, mobile computing and Internet have spurred the development of innovative location-oriented services. For accomplishing this, an accurate and time-efficient location determination system is required. For indoor positioning, WiFi-based solutions are prominent due to the widespread availability of WLANs (wireless LANs). More recently, the RFID (Radio Frequency...
A growing number of mobile phone applications utilize physical location to express the context of information. Most of these location-based applications assume GPS capabilities. Unfortunately, GPS incurs an unacceptable energy cost that can reduce the phone's battery life to less than nine hours. Alternate localization technologies, based on WiFi or GSM, improve battery life at the expense of localization...
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