Atheros - Csi Tool

One of the most common stumbling blocks for new users is hardware compatibility. Not every Wi-Fi card supports this custom firmware. The tool is specifically designed for cards using the Qualcomm Atheros AR9300 and AR9580 chipsets.

When a packet is received, the modified driver extracts the CSI matrix—a complex number representation of the channel response for each subcarrier. For a standard 20 MHz channel using 802.11n, the tool typically extracts 56 subcarriers. If using a 40 MHz channel, it extracts 114 subcarriers. atheros csi tool

The is an open-source driver and utility kit designed for Linux. Its primary function is to modify the firmware of specific Qualcomm Atheros Wi-Fi Network Interface Cards (NICs) to "unlock" the CSI data. While commercial Wi-Fi cards process this data internally to decode packets, they usually discard it. The Atheros CSI Tool forces the card to export this raw CSI data to the user space, allowing researchers to analyze it using MATLAB, Python, or C++. One of the most common stumbling blocks for

All modifications are at the driver level (no firmware hacking required), making it easier for researchers to extend. 3. Supported Hardware The tool is built on the ath9k Linux driver When a packet is received, the modified driver