Lab changes
This commit is contained in:
Silas Labor Zizou
@@ -1,14 +1,18 @@
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folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\mpi_ofc_2024\';
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%%% SIR Sweep for MPI Experiment %%%
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params = struct;
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params.i_atten = 10;
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params.i_atten = [40];
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wh = DataStorage(params);
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wh.addStorage("ber");
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wh.addStorage("ber_pf");
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wh.addStorage("sir");
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wh.addStorage("pd_in");
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playandrecord = 0;
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wh.addStorage("signals");
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precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
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M = 4;
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@@ -18,8 +22,8 @@ fdac = 92e9;
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fsym = 92e9;
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fadc = 160e9;
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rrcalpha = 0.05;
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v_bias = 2.27;
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i_atten = 40;
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v_bias = 2.25;
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i_atten = params.i_atten(1);
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pd_in_desired = 7;
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disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
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@@ -28,10 +32,13 @@ disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
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dcs = DC_supply("active",[1,1],"voltage",[v_bias, 9]);
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dcs.set("voltage",[v_bias, 9]);
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voa = OptAtten("active",[0,2,1,1],"value",[0,pd_in_desired,0,i_atten],"wavelength",[1310,1310,1310,1310]);
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voa.set('active',[0,2,1,1],'value',[0,pd_in_desired,0,i_atten]);
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voa.readvals();
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%%%%% SET Volatges %%%%%%
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voa = OptAtten("active",[1,2,1,1],"value",[0,pd_in_desired,0,i_atten],"wavelength",[1310,1310,1310,1310]);
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% voa.set('active',[1,2,1,1],'value',[0,pd_in_desired,0,i_atten]);
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% voa.readvals();
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SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",2000000,"removeDC",1);
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AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,0.62]);
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A2S = Awg2Scope(AWG,SCP,[0,0,0,1]);
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if 1
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@@ -45,6 +52,7 @@ end
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%%%%% Symbol Generation %%%%%%
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Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
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[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",1,...
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"fs_out",fdac,"applyclipping",0,"clipfactor",1.7,...
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"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
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@@ -59,24 +67,23 @@ elseif precomp_mode == 2 % apply precomp
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Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',3,'loadPath',precomp_path,'fileName',precomp_fn);
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end
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%%%%% AWG %%%%%%
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AWG = AwgKeysight("model","M8196A","fdac",fdac,"scaletodac",[1,1,1,1],"skews",[0,0,0,0],"voltages",[0,0,0,0.62]);
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AWG.upload("signal4",Digi_sig);
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Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
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save([folderpath,'bits'],"Bits");
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save([folderpath,'symbols'],"Symbols");
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for i_atten = wh.parameter.i_atten.values
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%%%%% SET ATTENUATOR %%%%%%
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voa.set('active',[0,2,1,1],'value',[0,7,0,i_atten]);
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voa.set('active',[1,2,1,1],'value',[0,7,0,i_atten]);
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%%%%% Scope %%%%%%
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SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1],"recordLen",2000000,"removeDC",1);
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Scpe_sig = SCP.read();
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Scpe_sig = Electricalsignal(Scpe_sig{1},"fs",fadc);
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%%%%% AWG --> Scope %%%%%%
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[~,~,~,Scpe_sig] = A2S.process("signal4",Digi_sig);
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% Scpe_sig.spectrum("displayname",'Rx Signal','fignum',10);
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%%%%%% Sample to 2x fsym %%%%%%
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Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*92e9);
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Scpe_sig = Scpe_sig.resample("fs_in",160e9,"fs_out",2*fsym);
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if precomp_mode == 1
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freqresp.estimate(Scpe_sig,"save",true,"savePath",precomp_path,"fileName",precomp_fn);
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@@ -85,44 +92,57 @@ for i_atten = wh.parameter.i_atten.values
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%%%%%% Sync Rx signal with reference %%%%%%
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[Scpe_sig,S] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
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save([folderpath,'rx_iatten_',num2str(i_atten),''],"S");
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Scpe_sig.eye(fsym,M);
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Scpe_sig.spectrum("displayname","Scope PSD","fignum",1996);
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%%%%% EQUALIZE %%%%%%
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% Scpe_sig.signal = Scpe_sig.signal - movmean(Scpe_sig.signal,[100,0]);
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Eq_ffe_only = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0);
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ber_ffe_only = runEQ(Eq_ffe_only,Scpe_sig,Symbols,Bits,M);
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Eq_ffe_only = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",50,"sps",2,"decide",0);
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[ber_ffe_only,EQ_sig,Noi] = runEQ(Eq_ffe_only,Scpe_sig,Symbols,Bits,M);
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Eq_move_it = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.05,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
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ber_move_it = runEQ(Eq_move_it,Scpe_sig,Symbols,Bits,M);
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nc = 2;
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burg_coeff = arburg(Noi.signal,nc);
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EQ_sig = EQ_sig.filter(burg_coeff,1);
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EQ_sig.plot("displayname",'After EQ','fignum',1112);
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if 0
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Noi.spectrum('displayname','Noise PSD','fignum',123)
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[h,w] = freqz(1,burg_coeff,length(Noi),"whole",Noi.fs);
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h = h/max(abs(h));
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hold on
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w_ = (w - Noi.fs/2);
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plot(w_.*1e-9,20*log10(fftshift(h)),'DisplayName',['', num2str(nc), ' coefficients for burg alg.']);
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end
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% EQ_sig.spectrum("displayname","Signal Spectrum after Postfilter","fignum",1234);
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Eq_nonlin = EQ("Ne",[50,7,7],"Nb",[0,0,0],"training_length",4096*2,"training_loops",5,"dd_loops",5,"K",2,"DCmu",0.0,"DDmu",[0.0004 0.0004 0.0004 0.0004 ],"DFEmu",0.005,"FFEmu",0,"plotfinal",0,"ideal_dfe",1);
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%VNLE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",[0.0004 0.0005 0.0006],"mu_tr",0,"order",[50,7,7],"sps",2,"decide",0);
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ber_nonlin = runEQ(Eq_nonlin,Scpe_sig,Symbols,Bits,M);
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Eq_adaptive_decision = FFE_adaptive_decision("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0,"buffer_length",80);
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ber_adaptive_decision = runEQ(Eq_adaptive_decision,Scpe_sig,Symbols,Bits,M);
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FFE_FFDCAVG("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0,"mu_buff",128);
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ber_ff_dcavg = runEQ(FFE_FFDCAVG,Scpe_sig,Symbols,Bits,M);
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Eq_feedback_removal = FFE_DCremoval("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",0,"mu_dc",0.05,"dc_buffer_len",1);
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ber_feedback_removal = runEQ(Eq_feedback_removal,Scpe_sig,Symbols,Bits,M);
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EQ_sig = MLSE("DIR",burg_coeff,"duobinary_output",0,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber_pf,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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sir = voa.power_state(3)-voa.power_state(4);
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pd_in = voa.power_state(2);
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disp(['BER: ',sprintf('%.1E',ber_eq),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
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disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber_pf),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
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wh.addValueToStorage(ber_eq,'ber',i_atten);
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wh.addValueToStorage(ber_ffe_only,'ber',i_atten);
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wh.addValueToStorage(ber_pf,'ber_pf',i_atten);
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wh.addValueToStorage(sir,'sir',i_atten);
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wh.addValueToStorage(pd_in,'pd_in',i_atten);
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wh.addValueToStorage(Rx_bits,'signals',i_atten);
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end
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name = ['mpidata_92GBd'];
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wh.save([folderpath,name]);
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cols = linspecer(8);
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