MATLAB Programming

Write a MATLAB function Q(a) for a>=3;

Write MATLAB function Pb(A, r),where Pb is the probability of bit error of demodulated PSK signal, A is the peak amplitude and r the attenuation factor;

Write MATLAB script file to investigate the relationship of Pb with A and r:

fix A=0.1 and let r change from 30% to 100%, plot the figure;

fix r=30% and let A change from 0.1 to 0.5, plot the figure;

let A change from 0.1 to 0.5 and r change from 30% to 100%, plot the 3D figure.