An Indoor Localization Method Based on RSSI of Adjustable Power WiFi Router

With the widely using of WiFi router, indoor localization based on RSSI (Received Signal Strength Indication) of WiFi has also been used broadly, but its localization precision is only several meters, meanwhile it needs more router. An indoor localization method based on adjustable power WiFi router is explored. Not only the off-line finger print maps but also on-line localization test used to adjust the power of every router. The simulation and real experiment results show that the precision of localization is improved compared with solid radiation power with the increase of collection data base at different radiation power though only 3 routers are used.