The Atheros CSI Tool is a pivotal open-source software framework designed for the extraction of Channel State Information (CSI) from commercial off-the-shelf (COTS) Wi-Fi Network Interface Cards (NICs) utilizing Qualcomm Atheros chipsets. Prior to the development of this tool, granular Wi-Fi sensing research was largely limited to specialized, expensive software-defined radio (SDR) platforms like the Universal Software Radio Peripheral (USRP). The Atheros CSI Tool bridged the gap between academic research and practical deployment by enabling researchers to access physical layer data from consumer-grade hardware. This report details the tool’s theoretical basis, hardware requirements, software architecture, extraction process, and its pivotal role in the advancement of Wi-Fi sensing applications.
It extracts CSI for 56 subcarriers at a 20 MHz bandwidth and 114 subcarriers at 40 MHz. atheros csi tool
The Atheros CSI Tool provides a range of features, including: The Atheros CSI Tool is a pivotal open-source