by Dongheng Zhang, Yang Hu, Yan Chen and Bing Zeng
This repo provide codes for the reference paper.
Array Signal Processing(ASP) techniques are powerful tools for many applications such as indoor localization, wireless sensing. However, it requires accurate phase synchronization between antennas, which can be achieved by compensate phase offsets between RF chains on commodity WiFi chips. The phase offset was regarded as a random variable every time the WiFi chips restart. By conducting extensive experiments, we find out that the phase offsets are semi-time-invariant and the calibration can be simplified greatly. Please refer the reference for details(It has been accepted but may not published formally, you can get it here PDF).
We provide codes and data in our experiments. Please run the main.m in the matlab folder to see the measurement results
Please cite the paper in your publications if it helps your research:
D. Zhang, Y. Hu, Y. Chen and B. Zeng.
"Calibrating Phase Offsets for Commodity WiFi",
IEEE Systems Journal, 2019.
If you have any problems or suggestions, please feel free to contact us: eedhzhang@std.uestc.edu.cn