DB and 400G and minor changes
This commit is contained in:
Silas Oettinghaus
@@ -2,11 +2,17 @@
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%% Parameter to simulate and save
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params = struct;
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params.M = [4];
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params.datarate = [300];
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params.rop = [0];
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params.M = [8];
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params.datarate = [448];
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params.rop = [-12:0];
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precomp_mode = 0; %0=do nothing ; 1= measure; 2=precomp active
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postfilter = 0; % noise whiten. approach -> Postfilter + MLSE
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db_precode = 1;
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db_encode = 1;
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db_channelapproach = 0;
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precomp_mode = 2; %0=do nothing ; 1= measure; 2=precomp active
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if ismac
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precomp_path = "/Users/silasoettinghaus/Documents/MATLAB/imdd_simulation/projects/standard_system";
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@@ -24,7 +30,7 @@ wh = DataStorage(params);
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wh.addStorage("ber_ffe");
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%% Init Params
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link_length = 0; %meter
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link_length = 1000; %meter
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pn_key = 2;
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laser_linewidth = 0;
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@@ -34,7 +40,6 @@ cnt=0;
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disp(['Start Simulation of ',num2str(endcnt),' loops...'])
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tic
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for M = wh.parameter.M.values
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for datarate = wh.parameter.datarate.values
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@@ -50,32 +55,34 @@ for M = wh.parameter.M.values
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%%%%% Symbol Generation %%%%%%
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[Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",0,...
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"fs_out",M8199.fdac,"applyclipping",1,"clipfactor",1.7,...
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"fs_out",M8199.fdac,"applyclipping",1,"clipfactor",1.5,...
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"applypulseform",0,"pulseformer",Pform,"randkey",pn_key,...
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"db_precode",0,...
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"db_precode",db_precode,"db_encode",db_encode,...
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"mrds_code",usemrds,"mrds_blocklength",512).process();
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Digi_sig.eye(fsym,M);
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Digi_sig.spectrum("fignum",11,"displayname",'before precomp');
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% Digi_sig.eye(fsym,M);
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Digi_sig.spectrum("fignum",123434,"displayname",'Digital Tx Signal');
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if precomp_mode == 1
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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
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Digi_sig = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs).precomp(Digi_sig,'maxampdb',3,'loadPath',precomp_path,'fileName',precomp_fn);
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Digi_sig = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",63,'f_ref',Digi_sig.fs).precomp(Digi_sig,'maxampdb',1,'loadPath',precomp_path,'fileName',precomp_fn);
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Digi_sig.spectrum("fignum",11,"displayname",'after precomp');
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end
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%%%%% AWG %%%%%%
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El_sig = M8199.process(Digi_sig);
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% El_sig.spectrum("displayname",'el','fignum',123434);
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% El_sig.signal = awgn(El_sig.signal,-3,'measured',pn_key);
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%%%%% Lowpass el. components %%%%%%
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El_sig = Filter('filtdegree',2,"f_cutoff",60e9,"fs",fdac*kover,"filterType",filtertypes.butterworth,"active",true).process(El_sig);
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%%%%% Electrical Driver Amplifier %%%%%%
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El_sig = Amplifier("amp_mode","ideal_no_noise","gain_mode","gain","amplification_db",9).process(El_sig);
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El_sig = Amplifier("amp_mode","ideal_no_noise","gain_mode","gain","amplification_db",3).process(El_sig);
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% El_sig = El_sig.setPower(6,"dBm");
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fprintf('Driver output power: %s dBm\n', num2str(El_sig.power));
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@@ -90,9 +97,8 @@ for M = wh.parameter.M.values
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[Opt_sig] = EML("mode",eml_mode.im_cosinus,"power",3,"fsimu",El_sig.fs,"lambda",1290,"bias",vbias,"u_pi",u_pi,"linewidth",laser_linewidth,"randomkey",pn_key).process(El_sig);
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% Opt_sig.eye(fsym,M);
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% %
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% Opt_sig.eye(fsym,7);
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%
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% figure(10)
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% hold on
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% scatter(El_sig.signal(1:100000)+vbias,(abs(Opt_sig.signal(1:100000)).^2)*1e3,0.1,'.','DisplayName','Modulator TF')
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@@ -104,6 +110,8 @@ for M = wh.parameter.M.values
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Optfilter = Filter('filtdegree',6,"f_cutoff",fsym.*0.7,"fs",fdac*kover,"filterType",filtertypes.gaussian,"active",true);
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Opt_sig = Optfilter.process(Opt_sig);
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% Opt_sig.spectrum("fignum",122,"displayname",['Tx SPectrum; PAM ',num2str(M)]);
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Opt_sig = Amplifier("amp_mode","ideal_no_noise","gain_mode","output_power","amplification_db",0).process(Opt_sig);
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i_ = wh.parameter.rop.length;
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@@ -143,19 +151,54 @@ for M = wh.parameter.M.values
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freqresp.plot();
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end
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Scpe_sig.spectrum("displayname",'After Scope','fignum',123434);
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%%%%%% Sample to 2x fsym %%%%%%
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Scpe_sig = Scpe_sig.resample("fs_in",fadc,"fs_out",2*fsym);
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%%%%%% Sync Rx signal with reference %%%%%%
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[Scpe_sig,D,cuts] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
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%%%%% EQUALIZE %%%%%%
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%
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Eq = FFE("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",1);
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Eq = 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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%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_sig] = Eq.process(Scpe_sig,Symbols);
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if db_channelapproach
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% ref symbols and transm. sequence are precoded
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[EQ_sig, Noi] = Eq.process(Scpe_sig,Duobinary().encode(Symbols));
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else
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[EQ_sig, Noi] = Eq.process(Scpe_sig,Symbols);
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end
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if db_encode || db_channelapproach
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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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end
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if postfilter
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% Noi.spectrum("displayname",'Noise Spectrum','fignum',1234);
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% EQ_sig.spectrum("displayname","Signal Spectrum","fignum",1234);
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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.spectrum("displayname","Signal Spectrum after Postfilter","fignum",1234);
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tic
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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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toc
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% EQ_sig.spectrum("displayname","Signal Spectrum after MLSE","fignum",1234);
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if 0
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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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end
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber_ffe(i),errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
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disp(['BER: ',sprintf('%.1E',ber_ffe(i)),' - - ROP: ',num2str(patten(i)),'dBm - - PAM-',num2str(M),' - - ',num2str(fsym*1e-9),' GBd']);
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@@ -170,19 +213,21 @@ for M = wh.parameter.M.values
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end
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toc
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disp(['Simulated: ',num2str(cnt/endcnt*100),' %']);
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% wh.save('C:\Users\Silas\Documents\MATLAB\imdd_simulation\projects\MPI_August\auswertung\')
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end
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end
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disp('Simulation Done!')
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cols = linspecer(8);
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%cnt = cnt+1;
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ber_ffe = wh.getStoValue('ber_ffe',M,datarate,wh.parameter.rop.values);
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% Create the initial plot
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figure(44);
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