Stranger identification algorithm based on CSI amplitude-subcarrier probability distribution

The invention discloses a stranger identification algorithm ASPD based on CSI amplitude-subcarrier probability distribution. Aiming at the current situation that the existing CSI-based identity recognition algorithm is researched from the angle of time domain or frequency domain, the invention innovatively researches from the angle of amplitude-subcarrier, and extracts a new feature by calculating the probability distribution of amplitude on each subcarrier, thereby improving the recognition rate of strangers. The main application scene of the existing CSI-based identity recognition algorithm is smart home or man-machine interaction, the existing CSI-based identity recognition algorithm mainly focuses on recognition of people in a training set, and the recognition effect on strangers outside the training set is poor, but the CSI-based identity recognition algorithm mainly focuses on recognition of the strangers outside the training set. Experimental results show that the recognition rates of the ASPD algorith