Exercise $5$

For an OOK $($On$-$Off Keying$)$ modulator with a carrier frequency of $1$ GHz and a bit rate of $10$ Mbps $,$ calculate:

$1.$ The number of bits per second.

$2.$ The minimum bandwidth with a filter having a roll$-$off factor $(\backslash (\backslash$alpha $\backslash ))$ of $0\mathrm{.}35.$

$3.$ The spectral efficiency.