This is the csi tool notes when I worked on my paper: WiTraffic: Low-cost and Non-Intrusive Traffic Monitoring System Using WiFi Shaohu Zhang, Myounggyu Won, Sang H. Son Proceedings of the IEEE 26th International Conference on Computer Communications and Networks ( ICCCN'17)
This is the research project based on the CSI tools
http://dhalperi.github.io/linux-80211n-csitool/
The Ubuntu version I used:
Download website: http://old-releases.ubuntu.com/releases/14.04.2/
Ubuntu-14.04.1-desktop-amd64.iso 22-Jul-2014 22:36 1.0G Desktop image for 64-bit PC (AMD64) computers (standard download)
UBUNTU_KERNEL_TAG=Ubuntu-3.13.0-32.57
solution: sudo rfkill unblock wifi ref: https://blog.csdn.net/caichao08/article/details/53894510