262 lines
10 KiB
Matlab
262 lines
10 KiB
Matlab
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folderpath = 'C:\Users\sioe\Nextcloud\Dokumente\02_Ablage_Office\Lab_Data_24\no_mpi_2024\';
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experiment_name = '10km_ffe_no_mpi_';
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ffe_only = 1;
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postfilter_approach = 0;
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db_channel_approach = 0;
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db_coding_approach = 0;
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db_precode = db_coding_approach || db_channel_approach;
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%%% SIR Sweep for MPI Experiment %%%
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params = struct;
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params.rop_atten = [7:-1:0]; % high atten to low atten to make sure there is no sudden opening of VOA
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params.pd_in_set = [6]; % desired P_out (outp. power mode=2)
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wh = DataStorage(params);
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wh.addStorage("ber");
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wh.addStorage("pd_in");
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wh.addStorage("rop");
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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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precomp_amp_max = 3;
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M = 4;
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pn_key = 2;
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usemrds = 0;
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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 = 2.25;
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disp(['Start Measurement of ',num2str(prod(wh.dim)),' loops...'])
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for rop_atten = wh.parameter.rop_atten.values
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for pd_in_set = wh.parameter.pd_in_set.values
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loop_name = ['_ropatten_',num2str(rop_atten),'_pdin_',num2str(pd_in_set)];
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%%%%% SET Voltages %%%%%%
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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",[1,2,1,1],"value",[rop_atten,pd_in_set,0,0],"wavelength",[1310,1310,1310,1310]);
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voa.set('active',[1,2,1,1],'value',[rop_atten,pd_in_set,0,0]);
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% voa.readvals();
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SCP = ScopeKeysight("model","DSAZ634A",'autoscale',1,"fadc",'GSa_160',"channel",[1,0],"recordLen",1000000,"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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precomp_path = "C:\Users\sioe\Documents\MATLAB\imdd_simulation\projects\standard_system\";
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precomp_fn = "lab_mpi_setup_2";
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else
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precomp_path = "C:\Users\sioe\Documents\MATLAB\model-collection\sioe_models\Labor_2024\Lab_PAM4\";
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precomp_fn = "precomp_bla__loop1_1";
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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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"db_precode",db_precode,...
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"mrds_code",usemrds,"mrds_blocklength",512,"db_encode",db_coding_approach).process();
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if precomp_mode == 1 % measure channel
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freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
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Digi_sig = freqresp.buildOFDM();
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elseif precomp_mode == 2 % apply precomp
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freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs);
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Digi_sig = freqresp.precomp(Digi_sig,'maxampdb',precomp_amp_max,'loadPath',precomp_path,'fileName',precomp_fn);
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end
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Digi_sig = Digi_sig.resample("fs_out",AWG.fdac);
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Digi_sig.spectrum("displayname","Normal Tx","fignum",10);
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save([folderpath,[experiment_name,'bits'],loop_name],"Bits");
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save([folderpath,[experiment_name,'symbols'],loop_name],"Symbols");
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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","Scope PSD","fignum",20);
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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*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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freqresp.plot();
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end
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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,experiment_name,'rx_signal',loop_name],"S");
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average_signals = 0;
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if average_signals
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scope_mean = zeros(size(S{1}.signal));
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for n=1:numel(S)
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scope_mean = scope_mean + S{n}.signal;
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end
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scope_mean = scope_mean ./ n;
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Scpe_sig.signal = scope_mean;
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end
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Scpe_sig.plot("displayname","Scope PSD","fignum",30);
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Scpe_sig.eye(fsym,M,"fignum",40,"displayname",' after Scope');
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voa.readvals();
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rop = voa.power_state(1);
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pd_in = voa.power_state(2);
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%%%%% EQUALIZE %%%%%%
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Eq = 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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Eq = 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",1);
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Eq = 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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if ffe_only %%%%%%%%%%%%%%%%%%%%%%%%%%%
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[EQ_sig] = Eq.process(Scpe_sig,Symbols);
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EQ_sig.plot("fignum",50,"displayname",'After EQ');
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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disp(['FFE: ',sprintf('%.1E',ber),'| ROP: ',num2str(rop),' dB | PD_in: ',num2str(pd_in),' dBm']);
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elseif postfilter_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
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[EQ_sig] = Eq.process(Scpe_sig,Symbols);
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EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
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Noi = EQ_sig-Symbols;
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber_ffe_only,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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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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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 = 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,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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disp(['FFE: ',sprintf('%.1E',ber_ffe_only),' -> PF -> MLSE: ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
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elseif db_channel_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
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[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
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EQ_sig.plot("fignum",50,"displayname",'After EQ','clear',1);
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EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
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EQ_sig = Duobinary().decode(EQ_sig);
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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disp([' DB Precode -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
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elseif db_coding_approach %%%%%%%%%%%%%%%%%%%%%%%%%%%
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[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
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EQ_sig = MLSE("DIR",[1,1],"duobinary_output",1,"M",M,"trellis_states",PAMmapper(M,0).levels).process(EQ_sig);
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EQ_sig = Duobinary().decode(EQ_sig);
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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EQ_sig.plot("fignum",50,"displayname",'After EQ');
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disp([' DB Precode -> DB Code -> Channel -> FFE -> Decode/ Mod ',sprintf('%.1E',ber),' | SIR: ',num2str(sir),' dB | PD_in: ',num2str(pd_in),' dBm']);
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end
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wh.addValueToStorage(ber,'ber',rop_atten,pd_in_set);
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wh.addValueToStorage(rop,'rop',rop_atten,pd_in_set);
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wh.addValueToStorage(pd_in,'pd_in',rop_atten,pd_in_set);
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wh.addValueToStorage(Rx_bits,'signals',rop_atten,pd_in_set);
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showCurrentMeasurement('BER', ber, 'ROP', rop, 'PD in', pd_in);
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autoArrangeFigures(3,3,2);
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end
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end
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wh.save([folderpath,experiment_name,'_wh']);
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cols = linspecer(8);
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rop_vals = wh.parameter.rop_atten.values;
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pd_in_set = wh.parameter.pd_in_set.values(1);
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bers = wh.getStoValue('ber',rop_vals,pd_in_set);
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rop_measured = wh.getStoValue('rop',rop_vals,pd_in_set);
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pd_in_measured = wh.getStoValue('pd_in',rop_vals,pd_in_set);
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s = wh.getStoValue('signals',rop_vals,pd_in_set);
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figure(90);
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hold on; % Retain the plot so new points can be added without complete redraw
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% Plot the data and get the line handle
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hLine = plot(rop_measured, bers, "LineWidth", 0.5, "LineStyle", "-", "Marker", ".", "MarkerSize", 15, "DisplayName", experiment_name);
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% Store pd_in_measured in the ZData property
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hLine.ZData = pd_in_measured;
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% Customize the data tips
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% Set labels for existing data tip rows
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hLine.DataTipTemplate.DataTipRows(1).Label = 'ROP';
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hLine.DataTipTemplate.DataTipRows(2).Label = 'BER';
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hLine.DataTipTemplate.DataTipRows(2).Format = '%.2e'; % Format BER as "3e-4"
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% Add a new data tip row for PDin
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pdinRow = dataTipTextRow('PDin', 'ZData');
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hLine.DataTipTemplate.DataTipRows(3) = pdinRow;
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% Continue with the rest of your plot settings
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yline(3.8e-3, 'DisplayName', 'HD-FEC', 'LineStyle', '--', 'HandleVisibility', 'off');
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xlabel('Received Optical Power (dBm)');
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ylabel('Bit Error Rate (BER)');
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title('Bit Error Rate vs. ROP');
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set(gca, 'yscale', 'log');
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set(gca, 'Box', 'on');
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grid on;
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grid minor;
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legend('Interpreter', 'none');
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autoArrangeFigures(3,3,2)
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