Radio Map Estimation: A data-driven approach to spectrum cartography

Radio maps characterize quantities of interest in radio communication environments, such as the received signal strength and channel attenuation, at every point a geographical region. map estimation typically entails interpolative inference based on spatially distributed measurements. In this tutorial article, after presenting some representative applications maps, most prominent methods are discussed. Starting from simple regression, exposition gradually delves into more sophisticated algorithms, eventually touching upon state-of-the-art techniques. To gain insight versatile toolkit, illustrative toy examples will also be presented.