Update README.md

Author: ChenCao2016

README.md

@@ -1,5 +1,6 @@
 # WLAN_PHY_PythonModule
-(We will refactor the project as Pytorch tensor project, to see how much GPU can help on our decoding)
+-(We will refactor the project as Pytorch tensor project, to see how much GPU can help on our decoding)-
+We will build WLAN PHY into Sionna. Tensorflow based simulation. https://nvlabs.github.io/sionna/
 
 WLAN_PHY_PythonModule is a framework for 802.11 PHY algorithm development and simulation.