$1.$ Assume that the data rate on a link if a user is using the $$full bandwidth$$ is $100$ Mbps$.$Assume that the bandwidth is $200$ MHz$.$ That is$,$ each Hz of bandwidth can support $0\mathrm{.}5$ bits$/$s$.$ The data rate supported by one unit of bandwidth is called the spectral efficiency and this is $0\mathrm{.}5$ bps$/$Hz for this link. Show in a figure how four users may share this bandwidth $($a$)$ in frequency and $($b$)$ in time. Assume that time slots are $100$ms long. You have to clearly label the axes and the units for both cases. Note that this is the ideal case. In most situations, a buffer is required to separate users in time or frequency.

Plot graph or graphs to show and compare $($a$)$ and $($b$)$