1. Consider an 802.11 WiFi device that uses a 20MHz of bandwidth in 5.8 GHz band for communication. A WiFi Access Point (also commercially known as a router) typically has a 100 milli-watt transmission power. Assume a 4 dBi Omni-directional antenna (an omni-directional antenna has a similar antenna gain in all directions) at the Access Point, and a 2 dBi Omni-directional antenna at a client device. Assume a free-space propagation environment. Let the client device be 100 meters away from the Access Point. What is the expected SNR (in dB) at the client device? What is the maximum data rate that you can achieve at the client device?