For wireless communications in a large convention hall or an

For wireless communications in a large convention hall or an airport terminal with many active devices, would you expect a licensed spectrum, low bandwidth channel (e.g., 5 MHz channel in the 2.3 GHz band) to provide a higher bit rate than an unlicensed spectrum, higher bandwidth channel (e.g., 20MHz channel in the 2.4 GHz band)? Explain

Solution

The 2.4GHz band is a “junk” band—it’s a frequency range that’s heavily polluted. It’s one of the most heavily used industrial, scientific, and medical (ISM) bands, which have broad rules to allow equipment that needs to emit a signal to work in within its confines. ISM devices aren’t used for communication, but produce electromagnetic signals as part of their operation. And those signals are interference.So,to reduce the junk,bandwidth has to be reduced to 5MHz.Higher the bandwidth,higher the interference from users.So reduce the intereference,users are allotted with the 2.3GHz which is a \"licensed spectrum\" but 2.4 GHz is not.