Research on CSI-based Gesture Recognition Technology and Their Typical Applications

In recent years, with the development of technology, gesture recognition technology based on Wi-Fi Channel State Information (CSI) has received widespread attention.This technology can realize non-contact, wireless perception recognition of gesture movements, and has many advantages such as high precision, good compatibility and strong environmental adaptability.This study firstly introduces the development background and research significance of CSI gesture recognition, highlighting its potential to revolutionize humancomputer interaction by enabling seamless control of smart devices without the need for physical contact or dedicated sensors.Furthermore, it emphasizes the societal value of this technology in assisting individuals with mobility impairments, offering an accessible and intuitive interface for digital interaction.Then, it compares and analyzes eight typical gesture recognition systems including PAC-CSI, WiCGesture, WiGNN, WiGesFree, UbiGest, Wi-SFDAGR, WiDual, and CrossFi.It discusses their key technologies, performance and application potential, and analyzes the challenges they currently face, and finally looks at the future trends of these technologies.