(b) Consider a digital transmission system using OOK. The received output volt- age pulse has a Gaussian shape for binary "1" as follows: t2 v(t) = A exp 202 where A is the peak pulse amplitude and σ is the pulse width at 60.7% level. The pulse is flat (0) for binary "0". Derive an equation for the maximum bit rate such that the vertical opening of the eye diagram is more than 80% of A. You can assume that the tails from bits that are not adjacent are negligible. (7 Marks)