Abstract
We present LiveSense - a cross-platform that transforms a commercial off-the-shelf (COTS) Wi-Fi Network Interface Card (NIC) on a laptop into a centimeter-level Range-Doppler sensor while preserving simultaneous communication capability. The laptops are equipped with COTS Intel AX211 (Wi-Fi 6E) or Intel BE201 (Wi-Fi 7) NICs. LiveSense can (i) Extract fully-synchronized channel state information (CSI) at >= 40 Hz, (ii) Perform time-phase alignment and self-interference cancellation on-device, and (iii) Provide a real-time stream of range, Doppler, subcarrier magnitude/phase and annotated video frames to a Python/Qt Graphical User Interface (GUI). The demo will showcase the ability to detect (i) Distance and radial velocity of attendees within a few meters of the device, (ii) Micro-motion (respiration), and (iii) Hand-gesture ranging. To the best of our knowledge, this is the first-ever demo to obtain accurate range information of targets from commercial Wi-Fi, despite the limited 160 MHz bandwidth.
Abstract (translated)
我们介绍 LiveSense——一个跨平台解决方案，它将笔记本电脑上的商用现货（COTS）Wi-Fi网络接口卡（NIC）转变为具备厘米级精度的测距-多普勒传感器，并同时保持通信功能。LiveSense 配备了 COTS Intel AX211 (Wi-Fi 6E) 或 Intel BE201 (Wi-Fi 7) NIC。 LiveSense 可以实现以下功能： (i) 提取全同步信道状态信息（CSI），频率高达 >= 40 Hz； (ii) 在设备上执行时间相位对齐和自干扰消除； (iii) 向 Python/Qt 图形用户界面 (GUI) 实时提供范围、多普勒频移、子载波幅度/相位以及标注的视频帧流。 演示将展示以下能力： (i) 检测距离及装置周围几米范围内参会者的径向速度； (ii) 微小运动（如呼吸）检测； (iii) 手势测距。 据我们所知，这是首次从商用 Wi-Fi 中获得准确目标范围信息的演示，尽管其带宽仅限于 160 MHz。
URL
https://arxiv.org/abs/2603.06545
