AaBI Example question: Consider a point-to-point channel. Assume the bandwidth of the channel is 2 MHz and the signal-to-noise ratio of this channel is 21 dB. Please compute the following (20 points) (a) What is the capacity of this channel? (b) How many signal levels are required to achieve this maximum transmission rat (c) If we fix the bandwidth of the channel to 2 MHz and we want to increase the channel capacity to 20 Mbps, then what should be the signal-to-noise ratio of the channel? (d) I we fix the signal-to-poise ratio of the channel at 21 dB and we want to achieve a channel capacity of 00 Mbps, then what bandwidth the channel must have? 24120m