High-Precision Localization in Mobile Wireless Networks

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Localization is one of the key operations in mobile wireless networks. The Global Position System (GPS) has been widely used to locate mobile network nodes. However, GPS requires the line of sight to the satellites and stops working when the line of sight is not available (e.g. indoors or in a downtown canyon). In addition, GPS tends to consume much power, which is highly problematic for power-constrained devices such as smartphones and smartwatches. The problems associated with GPS have motivated many researchers to devise a variety of different localization methods for the scenarios in which GPS does not work well. Despite the fact that the state-of-the art non-GPS schemes can completely or partially avoid the use of GPS, they still suffer from several serious problems such as low localization precision and high computation complexity. In this project, we plan to explore varied non-GPS techniques to achieve high-precision mobile localization in both indoor and outdoor environments.