Cedric Roux
56c66c09aa
Pre-ci test passed git-svn-id: http://svn.eurecom.fr/openair4G/trunk@4000 818b1a75-f10b-46b9-bf7c-635c3b92a50f
89 lines
2.1 KiB
Matlab
Executable File
89 lines
2.1 KiB
Matlab
Executable File
function megaMISO(SNRdB,Nsamples)
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%%% Flags
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save_mode = 0;
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Nfreq = 20;
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% Nsamples = 2000;
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% SNRdB=10;
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M_Tx=4;
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N_Rx=1;
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SNR=10^(SNRdB/10);
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%%% MMSE regularization factor
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mu = M_Tx/SNR;
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factor = 0.5*mu;
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%%% noise variance
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n_p=1/SNR;
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Channel generation
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% generate iid channel matrices SU
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% MU Capacity calculations - 2users
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Cap_2U_MMSE_iid=zeros(Nfreq,Nsamples);
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Cap_2U_MMSEfactor_iid=zeros(Nfreq,Nsamples);
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Users=4;
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for k=1:Users
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HH_4U_4x1=1/sqrt(2)*complex(randn(N_Rx,M_Tx,Nfreq,Nsamples,k),randn(N_Rx,M_Tx,Nfreq,Nsamples,k));
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end
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HH_2U_4x1=HH_4U_4x1(:,:,:,:,[1:2]);
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for k1=1:Nfreq
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for k2=1:Nsamples
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HS = HH_2U_4x1(:,:,k1,k2,[1:2]);
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% HS = squeeze(HS).';
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[gain,Cap_2U_MMSE_iid(k1,k2)] = MISO_MMSE(M_Tx,HS,n_p,mu);
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[gain_factor,Cap_2U_MMSEfactor_iid(k1,k2)] = MISO_MMSE(M_Tx,HS,n_p,factor);
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end
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end
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% MU Capacity calculations - 4users
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Cap_4U_MMSE_iid=zeros(Nfreq,Nsamples);
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for k1=1:Nfreq
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for k2=1:Nsamples
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HS = HH_4U_4x1(:,:,k1,k2,[1:Users]);
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% HS = squeeze(HS).';
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[gain,Cap_4U_MMSE_iid(k1,k2)] = MISO_MMSE(M_Tx,HS,n_p,mu);
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end
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end
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% CDF calculation
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% MU
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[Cap_2U_MMSE_iid_f,Cap_2U_MMSE_iid_x] = ecdf(Cap_2U_MMSE_iid(:));
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[Cap_2U_MMSEfactor_iid_f,Cap_2U_MMSEfactor_iid_x] = ecdf(Cap_2U_MMSEfactor_iid(:));
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[Cap_4U_MMSE_iid_f,Cap_4U_MMSE_iid_x] = ecdf(Cap_4U_MMSE_iid(:));
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Plot results
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figure(20)
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hold off
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plot(Cap_4U_MMSE_iid_x,Cap_4U_MMSE_iid_f,'r')
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hold on
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plot(Cap_2U_MMSE_iid_x,Cap_2U_MMSE_iid_f,'b')
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plot(Cap_2U_MMSEfactor_iid_x,Cap_2U_MMSEfactor_iid_f,'k')
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ylabel('CDF');
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xlabel('Capacity (bits/ch.use)');
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legend('MMSE 4x1 4us iid','MMSE 4x1 2 us iid ','MMSE 4x1 2 us iid factor test')
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grid on
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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