function SNR4
clear
snr_in_dB1=0:1:6;
snr_in_dB2=0:1:6;

for i=1:length(snr_in_dB1)
    [dscdma_open_ber2]=dscdma_open_looptest2(snr_in_dB1(i));
    dscdma_open_ber2_prb(i)=dscdma_open_ber2;
end

for i=1:length(snr_in_dB2)
    [dscdma_open_ber4]=dscdma_open_looptest4(snr_in_dB2(i));
    dscdma_open_ber4_prb(i)=dscdma_open_ber4;
end
semilogy(snr_in_dB1,dscdma_open_ber2_prb,'-*r');
hold
semilogy(snr_in_dB2,dscdma_open_ber4_prb);