what are txgain and rxgain parameters in YansWifiPhyHelper class

[Kapil Kumar sharma]

i was going through the code in energy-model-example.cc , an example program from energy model.

the following    lines are confusing me

 YansWifiPhyHelper wifiPhy = YansWifiPhyHelper::Default ();
   wifiPhy.Set ("RxGain", DoubleValue (-10));
  wifiPhy.Set ("TxGain", DoubleValue (offset + Prss));

what is the meaning of rxgain and txgain in the last two line

I tried to search the web for this two parameters but i found no satisfactory explaination

please do help me

[Parys]

Hello:

I am not an expert but I think, that this article describes well this topic: https://www.electronicdesign.com/technologies/communications/article/21796484/understanding-wireless-range-calculations.
Values TX and RX gains are the values that can affect the range and quality of your transmission.
In general, it comes to

Received power = transmit power + gains – losses

Please correct me, If I am wrong.

Cheers. 

[Kapil Kumar sharma]

thank you so much for this article Parys, i am a computer science student so i don't have that much background understanding about  communication field.Your article helped me clear some doubts