https://www.mathworks.com/help/wlan/ref/wlanlltfnoiseestimate.html
wlanLLTFNoiseEstimate - Noise estimation using L-LTF or S1G-LTF1 - MATLAB
This MATLAB function estimates the mean noise power, in watts, using the demodulated OFDM symbols from the legacy long training field (L-LTF) or S1G long...
noiseestimationusingl