Peschke, Sven, and Reinhold Haeb-Umbach. “Velocity Estimation of Mobile Terminals by Exploiting GSM Downlink Signalling.”https://doi.org/10.1109/WPNC.2007.353637__In 4th Workshop on Positioning Navigation and Communication (WPNC 2007), 217–22, 2007.https://doi.org/10.1109/WPNC.2007.353637 .