Consider the following modulation scheme: s(t) = A(t)cos(2Ãt) – B(t)sin(2Ãct) where A(t) = {−3,−1,1,3} and B(t) € {−4, −2,2,4} (a) Write the in-phase and quadrature representation of this signal; (b) Derive the baseband equivalent model of the signal.