26°
CSI 信道状态信息
CSI, Channel State Information, channel state information to measure channel conditions, PHY layer, subcarriers decoded from OFDM system. CSI is fine-grained physical information, more sensitive to the environment, so it is used for action recognition, gesture recognition, keystroke Identify, track, and other fields. // CSI, Channel State Information, 衡量信道情况的信道状态信息, PHY层, 来自OFDM系统下解码的子载波. CSI是细粒度的物理信息, 对环境更加敏感, 所以应用于动作识别, 手势识......