Another so called Bi$$ modulation has the following mapping rule$($s$).$ There is always a transition at the beginning of a bit interval. If bk $=1$ there is a transition in the middle of

the bit interval, while if bk $=0$ there is no transition. As always the transitions are between $$V $.$

$($a$)$ Based on this, draw the transmitted signal for the information bit sequence of Problem

$2$ of this Homework Assignment.

$($b$)$ Is the modulation immune to polarity reversals?