6.The receiver sensitivity is defined as the minimum signal level required for a frame error ratio of 3% in IEEE Std 802.11 with pseudorandom data. The sensitivity shall be less than or equal to –80 dBm. Asuume you would like to setup an IEEE 802.11 Wireless LAN works in 2.4 GHz ISM band. Assume the antenna gain of the wireless access point is 2.2 dBi and the transmitter power is 20mW, and the antenna gain of the wireless adapter is 2 dBi. The receiver sensitivity is -73 dBm for 54 Mbps and -83 dBm for 11 Mbps. Assuming other attenuation is negligible and only free space loss need to be considered, calculate the transmission range for data rate 54Mbps and 9Mbps, respectively.
7.In the above question, if you need to double the transmission range for a data rate 54Mbps, how should you select the antenna? Determine the minimum antenna gain needed for the AP (assume the wireless adapter is the same).
8. For question 6, if all other conditions are the same but the Wi-Fi is working on 5G, what is the transmission range?