Question 2.8
Question 2.9

 

Minimum transmission bandwidth

From the simple 8-ary example, we can generalize and conclude that:

 

The minimum bandwidth required for error-free transmission in a baseband channel is given by:

Bmin = 0.5 x 1/Ts

where Ts is the symbol period.


Knowing that the maximum symbol rate that can be supported on a channel is 2B symbols/second, and with each symbol conveying log2M bits, we can conclude that:

The channel capacity for a baseband channel with bandwidth B Hz is:

Channel capacity C = 2Blog2M bits/second