Table 2 Description of key-value sets of json objects in CSI files.

From: RoboMNIST: A Multimodal Dataset for Multi-Robot Activity Recognition Using WiFi Sensing, Video, and Audio

Key

Type

Value

module_number

Integer, either 1, 2, or 3

The module number based on Fig. 1

time_stamp_ns

Array of integer numbers

The timestamps of CSI collections in nanoseconds

complex_csi

Matrix of complex numbers

The CSI matrix as defined in eq. (2), where each row corresponds to a timestamp

RSS

Array of integer numbers

The RSS values at each timestamp