The throughput loss that occurs in wireless networks is much higher when compared to that which occurs in traditional networks. I am interested in learning the particular rationale behind this decision.

Throughput loss in wireless networks is substantially higher than it is in traditional networks. I'm interested in the exact justification for this.

Is there a recommended network architecture for this problem?

You are designing the Wi-Fi for a classroom of 20 students and all students are using Wi-Fi at the same time. The protocol efficiency is 40% and the channel utilization is 80%. Each students uses a throughput of 2 Mbps. What is the minimum PHY rate requirement for the radio in Mbps?