SOLVED:For the QPSK modulator; the reference oscillator is cos wct and the phase shift difference I5 -90 . The Input binary datas Logic 1= IV and Logic 0 =-IV are given for both channel. Find and plot the truth table Find and plot the Phasor dlagram. Find and plot the constellation diagram: Find and plot the output spectrum for an Input data blt rate of 1OKbps with carrier frequency of I80khz;