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Classes/01_transmit/Pulseformer.m

@@ -118,7 +118,7 @@ classdef Pulseformer
 %             data_out = upfirdn(data_in,h,up,dn);
 % 
 %             %cut signal, which is longer due to fir filter
-%             st = round(up/dn*racos_len/2); %we need to cut y_out
+             st = round(up/dn*racos_len/2); %we need to cut y_out
 %             en = round(st + (length(data_in)*up/dn) -1);
 % 
 %             data_out = data_out(st:en);

MPI_offline_analysis/mpi_analysis_pam4.m

@@ -0,0 +1,59 @@
+
+clear;
+col = linspecer(6);
+% load dataset
+simdata = load('/Users/silasoettinghaus/Documents/MATLAB/Labor_Datensatz_PAM4_MPI/pam4_10km_1km/pam4__loop_3_56Gbd_19092023_1459.mat');
+% get common variables of simulation loop
+
+fdac = simdata.saveStructTemp.common.f_DAC;
+fadc = simdata.saveStructTemp.common.f_ADC;
+fsym = simdata.saveStructTemp.common.f_sym;
+
+% 0) build RX Signal
+
+y_rx = Electricalsignal(simdata.saveStructTemp.dp_tsynch_out');
+y_rx.fs = 2.*fsym;
+
+% 0) build tx reference Signal for eq training
+y_digimod = Electricalsignal(simdata.saveStructTemp.digi_mod_out');
+y_digimod.fs = fsym;
+
+
+% 1) normlaize
+y_rx.normalize("mode","rms");
+
+
+% 2.1) equalize
+eq          = EQ("K",2,"plottrain",0,"plotfinal",0,...
+    "training_length",4096,"training_loops",3,...
+    "Ne",[50,9,3],"Nb",[2,0,0],...
+    "DCmu",0,"DDmu",[0.0004 0.0005 0.0005 0.0005 ],"DFEmu",0.005,"FFEmu",0.005,...
+    "dd_loops",3,"epsilon",[10 100 1000 ],"M",2,...
+    "thres",[0.005 0.0004 0.0005 ],"l1act",0,"delay",0,"rho",0.0005,"ideal_dfe",0,"DB_aim",0);
+
+eq2 = EQ_silas("Ne",[50,9,3],"Nb",[2,0,0],"trainlength",4096,"mu_dc_dd",0,"mu_dc_train",0,"mu_ffe_train",0.005,"mu_combined_dd",[0.0004 0.0005 0.0005 0.0005 ],"ddloops",3,"trainloops",3);
+
+
+[Eq_out] = eq.process(y_rx,y_digimod);
+[Eq_out2] = eq2.process(y_rx,y_digimod);
+
+figure()
+scatter(1:length(Eq_out.signal),Eq_out.signal,4,'.','MarkerEdgeColor',col(4,:),'DisplayName','After EQ');
+
+% 2.2) MPI reduction blocks
+
+% 3) digital demodulation
+digimod = PAMmapper(2^simdata.saveStructTemp.common.M,0);
+
+d_hat = digimod.demap(Eq_out);
+d_hat2 = digimod.demap(Eq_out2);
+d_    = digimod.demap(Electricalsignal(simdata.saveStructTemp.digi_mod_out'));
+d = simdata.saveStructTemp.prms_out;
+
+% 4) BER calculation
+[totalbits,errors_bm,ber_dhat,loc]     = calc_ber(d_hat.signal(1:end,:)    ,d(1:end,:)',"skip",0,"returnErrorLocation",1);
+[totalbits2,errors_bm2,ber_dhat2,loc]  = calc_ber(d_hat2.signal(1:end,:)    ,d(1:end,:)',"skip",0,"returnErrorLocation",1);
+
+ber_nodctap = mean(simdata.saveStructTemp.prms_compare_state.BER  );
+
+disp(['BER_new_eq1: ',num2str(ber_dhat),' BER_new_eq2: ',num2str(ber_dhat2),' BER_old: ',num2str(ber_nodctap)]);

setup_simulation.m

@@ -4,13 +4,15 @@ lw = [0.1e6 1e6 10e6];
 
 for lp = 1
 
-    dc_mu = 0.05;
+sir = -20;%sir_loop(lp);
 
     sir = sir_loop(1);
 
     rng(lp);
 
-    %% Set Simulation Variables
+O = 12; %order of prbs
+N = 2^(O-1); %length of prbs
+[~,seed] = prbs(O,1); %initialize first seed of prbs
 
     sir = sir;
 
@@ -77,7 +79,7 @@ for lp = 1
     eq          = EQ("K",2,"plottrain",0,"plotfinal",0,...
         "training_length",4096,"training_loops",2,...
         "Ne",[50,5,3],"Nb",[3,2,2],...
-        "DCmu",dc_mu,"DDmu",[0.0004 0.0005 0.0006 0.0007 ],"DFEmu",0.005,"FFEmu",0.005,...
+        "DCmu",0.005,"DDmu",[0.0004 0.0005 0.0006 0.0007 ],"DFEmu",0.005,"FFEmu",0.005,...
         "dd_loops",2,"epsilon",[10 100 1000 ],"M",2,...
         "thres",[0.005 0.004 0.0005 ],"l1act",0,"delay",0,"rho",0.0005,"ideal_dfe",0,"DB_aim",0);
 
@@ -135,6 +137,9 @@ for lp = 1
 
     disp(['SIR ',num2str(10*log10(X.power/R.power))]);
 
+%%
+X           = opticatten.process(X);
+% X           = edfaamp.process(X);
 
     X = X+R;
 
@@ -164,7 +169,7 @@ for lp = 1
     %     wl = 1000; % symbols
     %     Eq_in.signal = Eq_in.signal - 1/wl .* movsum( Eq_in.signal,[wl/2,wl/2]);
 
-    [Eq_out]             = eq2.process(Eq_in,reference);
+    [Eq_out]             = eq.process(Eq_in,reference);
 
     %% MPI reduction DC removal
     wl = 1000; % symbols
@@ -186,15 +191,15 @@ for lp = 1
     wl = 100; % symbols
     smoothed = ( 1/wl .* movsum(e,[wl/2,wl/2])  );
 
-    % remove interference
+    %subplot(1,5,lp)
-    for level = 0:3
+    xax = 1:eq_out.length;
-        yk_lvsm.signal(pre_decision_level_uni==level) = yk_lvsm.signal(pre_decision_level_uni==level) - smoothed(pre_decision_level_uni==level);
+    scatter(xax,eq_out.signal,4,'.','MarkerEdgeColor',col(6,:),'DisplayName','After EQ');
-        yk_lvlp.signal(pre_decision_level_uni==level) = yk_lvlp.signal(pre_decision_level_uni==level) - filtered(pre_decision_level_uni==level);
+    xlim([1, xax(end)]);
+    ylim([-2 2]);
+    xlabel('Sampling Index')
+    ylabel('Amplitude')
+    legend
 end
-    %
-    %     figure(26);plot(1:length(error_log),error_log(:,end),"LineWidth",0.4);ylim([-0.8 0.8]);ylabel('$\epsilon$'),title(['Linewidth: ',num2str(laser_linewidth*1e-6), 'MHz'])
-    %
-    %     figure(28);plot(1:length(e),e,"LineWidth",0.4);ylim([-0.8 0.8]);
 
     
     
@@ -315,6 +320,6 @@ for lp = 1
         hold off
 
     end
-end
+