SRS-based LTE indoor wireless positioning system

With the categories of mobile communication services increasing, the positioning technology based on the base station (BS) in long term evolution (LTE) attracts more and more attention. When it comes to realize the indoor positioning of mobile phone, it is relatively difficult due to multipath, pedestrian interference, power attenuation and so on. In this paper, we use the sounding reference signal (SRS) in LTE-FDD uplink to detect and multiple BS antennas are set to calculate time differences as the input of UTDOA positioning algorithm in order to obtain user's location. Finally, simulations results show our method performs well under correct configurations.