Wireless LAN sensing with smart antennas
This work addresses motion detection for smart home applications, but it appears incremental as it builds on existing WiFi sensing and beam-steering technologies.
The paper tackles human motion detection using WiFi devices with smart antennas, achieving motion sensing by monitoring body-induced signal alterations from beam-steering antennas, with experimental validation in a smart home environment.
The paper targets the problem of human motion detection using Wireless Local Area Network devices (WiFi) equipped with pattern reconfigurable antennas. Motion sensing is obtained by monitoring the body-induced alterations of the ambient WiFi signals originated from smart antennas supporting the beam-steering technology, thus allowing to channelize the antenna radiation pattern to pre-defined spots of interest. We first discuss signal and Channel State Information (CSI) processing and sanitization. Next, we describe the motion detection algorithm based on Angle-of-Arrival (AoA) monitoring. Proposed algorithms are validated experimentally inside a large size smart home environment.