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.

翻译：本文介绍LiveSense——一个跨平台系统，它能够将笔记本电脑上的商用现成Wi-Fi网络接口卡转换为厘米级精度的距离-多普勒传感器，同时保持其原有的并发通信能力。实验所用笔记本电脑搭载了商用Intel AX211（Wi-Fi 6E）或Intel BE201（Wi-Fi 7）网络接口卡。LiveSense具备以下功能：(i) 以≥40 Hz的频率提取完全同步的信道状态信息；(ii) 在设备端执行时间-相位对齐与自干扰消除；(iii) 通过Python/Qt图形用户界面实时输出距离、多普勒频移、子载波幅度/相位数据流及带标注的视频帧。演示将展示系统能够检测：(i) 设备数米范围内参与者的距离与径向速度；(ii) 微动（呼吸）信号；(iii) 手势距离感知。据我们所知，这是在商用Wi-Fi有限带宽（160 MHz）条件下首次实现精确目标距离信息获取的演示系统。