Wireless Channel Charting: Theory, Practice, and Applications

Channel charting is a recently proposed framework that applies dimensionality reduction to channel state information (CSI) in wireless systems with the goal of associating pseudo-position each mobile user low-dimensional space: chart. summarizes entire CSI dataset self-supervised manner, which opens up range applications are tied location. In this article, we introduce theoretical underpinnings and present an overview recent algorithmic developments experimental results obtained field. We furthermore discuss concrete application examples network- user-related applications, provide perspective on future challenges as well role next-generation networks.