1.完整项目描述和程序获取
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2.部分仿真图预览
3.算法概述
预编码技术是MIMO系统中的关键技术之一,其目的是通过在发射端对信号进行适当的预处理,以提高接收端的信号质量。预编码器设计的目标是使信号在经过无线信道传输后,能够在接收端实现期望的信号重构。
SDR-AltMin混合预编码算法是一种针对大规模MIMO系统的高效预编码技术,它结合了半定松弛(Semidefinite Relaxation, SDR)和交替最小化(Alternating Minimization, AltMin)两种方法,以优化预编码矩阵。
4.部分源码
..........................................................................
NRF = [2,4,8,16,32];
SNR = 10.^(SNR_dB./10);
realization = 20;
smax = length(SNR);% enable the parallel
for r = 1:length(NRF)
parfor reali = 1:realization
[ij1,ij2,r,reali]
[ FRF, FBB ] = SDR_AltMin( Fopt(:,:,reali), NRF(r) );
[ WRF, WBB ] = Receiver( Wopt(:,:,reali), NRF(r) );
R(r,reali) = log2(det(eye(Ns) + SNR/Ns * pinv(WRF * WBB) * H(:,:,reali) * FRF * FBB * FBB' * FRF' * H(:,:,reali)' * WRF * WBB));
end
end
% plot(NRF,sum(R,2)/realization,'Marker','diamond','LineWidth',1.5,'Color',[0.87058824300766 0.490196079015732 0]);
% grid on
% hold on
if SNR_dB==0
if Ns == 2
save nrfns2.mat NRF R realization
end
if Ns == 4
save nrfns4.mat NRF R realization
end
if Ns == 8
save nrfns8.mat NRF R realization
end
end
if SNR_dB==-5
if Ns == 2
save nrfns22.mat NRF R realization
end
if Ns == 4
save nrfns42.mat NRF R realization
end
if Ns == 8
save nrfns82.mat NRF R realization
end
end
if SNR_dB==-10
if Ns == 2
save nrfns23.mat NRF R realization
end
if Ns == 4
save nrfns43.mat NRF R realization
end
if Ns == 8
save nrfns83.mat NRF R realization
end
end
if SNR_dB==5
if Ns == 2
save nrfns24.mat NRF R realization
end
if Ns == 4
save nrfns44.mat NRF R realization
end
if Ns == 8
save nrfns84.mat NRF R realization
end
end
end
end
0X_071m
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