Indoor Positioning Using off-the-shelf FM Radio Devices
|Titolo||Indoor Positioning Using off-the-shelf FM Radio Devices|
|Publication Type||Conference Paper|
|Year of Publication||2010|
|Authors||Papliatseyeu, A., A. Matic, V. Osmani, and O. Mayora|
|Conference Name||International Conference on Indoor Positioning and Indoor Navigation (IPIN), Zurich, Switzerland|
Indoor localization is important for many areas of ubiquitous computing research, such as activity recognition and prediction, assisted health care, tracking of people and objects, and others. The current de-facto standard of indoor positioning are Wi-Fi–based solutions. However, Wi-Fi coverage is limited in rural areas, developing countries and interferencesensitive environments. In cases when Wi-Fi infrastructure is not readily present, its deployment is expensive both in terms of hardware costs and required personnel qualification. A cost-effective alternative to Wi-Fi is localization using FM radio signals. Previous works on FM positioning [1, 2] considered only outdoor environments and used specialised hardware. This paper, in contrast, focuses on indoor scenarios and FM receivers already present in many mobile devices, such as cellphones, MP3 players, pedometers, etc. The short-range FM transmitters used as beacons are available from conventional electronics shops, and are significantly cheaper than Wi-Fi access points. In this paper we present the results of experimental comparison of FM and Wi-Fi positioning accuracy. Also, we describe and evaluate a method for maintaining the system accuracy over time without any additional hardware.