plot3_a1.m

MIMO多天线收发 各种性能比较（BER曲线） 包括MMRC EGC SC Alamouti V-BLAST。信道为瑞利信道

clc
clear all

Nr=input('Nr=');
%p=input('p=');

snr21=-10:3:30;
for i=1:length(snr21)
    ber_m1_alam(i)=alamqpsk(snr21(i),Nr);
end
semilogy(snr21,ber_m1_alam,'kd:','linewidth',1);
hold on

snr21=-10:3:30;
for i=1:length(snr21)
    ber_m1_vbzl(i)=vblastzf(snr21(i),Nr);
end
semilogy(snr21,ber_m1_vbzl,'gs:','linewidth',1);
hold on

snr21=-10:3:30;
for i=1:length(snr21)
    ber_m1_vbmmse(i)=vblastMMSE(snr21(i),Nr);
end
semilogy(snr21,ber_m1_vbmmse,'ro:','linewidth',1);
hold on

snr21=-10:3:30;
for i=1:length(snr21)
    ber_m1_vbml(i)=vblastML(snr21(i),Nr);
end
semilogy(snr21,ber_m1_vbml,'bv:','linewidth',1);

xlabel('SNR(dB)');
ylabel('SER');
% legend('STBC 2x2','V-BLAST 2x2 ZF','V-BLAST 2x2 MMSE','V-BLAST 2x2 ML');
legend('STBC 2x4','V-BLAST 2x4 ZF','V-BLAST 2x4 MMSE','V-BLAST 2x4 ML');
hold off