Indoor Localization Using Barely Perceptible Audio Signals

Enhancing Barely Perceptible Targets

Indoor Localization Using Audio Features of FM Radio Signals

Typical localization systems use various features of the signal to estimate the distance, including received signal strength indicator (RSSI), timing information or angle of arrival (AoA). However, there are a number of signal features of FM radio that may also be suitable for localization, namely stereo channel separation (SCS) and signal to noise ratio (SNR). This paper investigates the feasi...

Accurate and Robust Indoor Localization Systems using Ultra-wideband Signals

Indoor localization systems that are accurate and robust with respect to propagation channel conditions are still a technical challenge today. In particular, for systems based on range measurements from radio signals, non-line-of-sight (NLOS) situations can result in large position errors. In this paper, we address these issues using measurements in a representative indoor environment. Results ...

Indoor Localization Using Bluetooth

This article proposes a solution for user localization in indoor areas using the compass, accelerometer and Bluetooth to calculate the user’s position within this environment. This application is viewed through a 3D virtual environment representing a simple room. The basis of this solution is the utilization of a mobile Bluetooth-enabled device, such as a PDA, where the application is deployed....

Low-Complexity Audio Signal Processing for Localization in Indoor Scenarios

During the last years, wireless sensor networks (WSNs) have received significant attention from the research community, as one of the emerging technologies for the new millennium. A WSN is composed by many (e.g., hundreds) devices with limited processing and communication capabilities. Therefore, energy saving is one of the major issues and information processing has to be performed with low co...