SDR-based Passive Indoor Localization System for GSM

Alyafawi, Islam Fayez Abd; Dimitrova, Desislava Cvetanova; Braun, Torsten (18 August 2014). SDR-based Passive Indoor Localization System for GSM. In: ACM SIGCOMM Software Radio Implementation Forum (SRIF) 2014 (pp. 7-14). ACM 10.1145/2627788.2627790

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This study deals with indoor positioning using GSM radio, which has the distinct advantage of wide coverage over other wireless technologies. In particular, we focus on passive localization systems that are able to achieve high localization accuracy without any prior knowledge of the indoor environment or the tracking device radio settings. In order to overcome these challenges, newly proposed localization algorithms based on the exploitation of the received signal strength (RSS) are proposed. We explore the effects of non-line-of-sight communication links, opening and closing of doors, and human mobility on RSS measurements and localization accuracy. We have implemented the proposed algorithms on top of software defined radio systems and carried out detailed empirical indoor experiments. The performance results show that the proposed solutions are accurate with average localization errors between 2.4 and 3.2 meters.

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