i need matlab code

An M-PSK communication system has M different symbols to transmit and each symbol can be modeled as sum of Ac.cos(2nfct) and As-sin(2nfct) where Ac is amplitude of cosinusoid, A, is amplitude of sinusoid, f, is carrier frequency, and A and A, satisfy Es = A + Az where E, is signal energy. Show signal mapping (Ac and A, values) for each possible symbol (000, 001, ... 110, 111) for an 8-PSK communication systems. Perform Monte Carlo simulation for the 8-PSK communication system which you designed signal mapping. Perform correlation at demodulator according to C(r, sm) = r.sm, m = 0,1,....M - 1 and select the symbol with highest correlation as the transmitted symbol. Compute symbol error rate for each symbol, total symbol error rate, and total bit error rate. Plot total symbol error rate versus signal to noise ratio