atlab Code clear all clc N=10.^6 SNR_db=0:10; for k=1:length(SNR_db); tx=round (rand(1,N)); txx=sign(tx-0.5); % BPSK SNR (k)= 10.^(SNR_db(k).*0.1); noiseVar=1./(length(txx)-1) %noise=(randn(1, length(txx)))*sqrt(1/(2*SNR(k noise=(randn(1, length(txx)))*sqrt(1/(2*SNR(k) rxx=txx+noise; rx=sign(rxx); rX=sign(rx+1); error= sum(xor (tx,rX)); BER(k)=error/N; BER_th(k)=qfunc(sqrt(2*10.^((k-1)/10))); end figure(1) semilogy(SNR_db,BER_th,"b-o") hold on semilogy (SNR_db,BER, 'r-*') xlabel('SNR in db') ylabel('BER') legend ('Theoretical', 'Practical')

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