333 lines
15 KiB
Matlab
333 lines
15 KiB
Matlab
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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 = [224];
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params.sir = [35]; %decibel = attenuation of interference path
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params.laser_linewidth = [1e6];
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params.pn_key = [1];
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params.rop = [-12:1:-1];
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params.rop = 0;
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usemrds = 0;
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wl = 512;
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name = ['wh_',strrep(num2str(now),'.','')];
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wh = DataStorage(params);
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wh.addStorage("ber_ffe");
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wh.addStorage("ber_dcavg");
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wh.addStorage("ber_adapt");
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wh.addStorage("ber_dcrem");
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%% Init Params
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link_length = 10000; %meter
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endcnt = prod(wh.dim);
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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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for pn_key = wh.parameter.pn_key.values
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% SETUP HERE: %%
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kover = 8;
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M8199 = M8199A("kover",kover);
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fdac = M8199.fdac;
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fsym = round(datarate / log2(M)) * 1e9;
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rrcalpha = 0.05;
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Pform = Pulseformer("fsym",fsym,"fdac",4*fsym,"pulse","rrc","pulselength",16,"rrcalpha",rrcalpha);
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% MAIN SIGNAL
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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",1.4,"applypulseform",1,"pulseformer",Pform,"randkey",pn_key,"mrds_code",usemrds,"mrds_blocklength",wl).process();
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%%%%% AWG %%%%%%
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El_sig = M8199.process(Digi_sig);
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%El_sig.signal = awgn(El_sig.signal,20,'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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fprintf('Driver output power: %s dBm\n', num2str(El_sig.power));
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fprintf('Driver output peak voltage: %s Vpp \n', num2str(max(El_sig.signal)-min(El_sig.signal)));
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% INTERFERENCE SIGNAL
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%%%%% Symbol Generation %%%%%%
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[Digi_sig_i,Symbols_i,Bits_i] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",0,...
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"fs_out",M8199.fdac,"applyclipping",1,"clipfactor",1.4,"applypulseform",1,"pulseformer",Pform,"randkey",pn_key*2,"mrds_code",usemrds,"mrds_blocklength",wl).process();
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%%%%% AWG %%%%%%
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El_sig_i = M8199.process(Digi_sig_i);
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%El_sig_i.signal = awgn(El_sig_i.signal,20,'measured',pn_key*2);
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%%%%% Lowpass before Modulator %%%%%%
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El_sig_i = Filter('filtdegree',2,"f_cutoff",60e9,"fs",fdac*kover,"filterType",filtertypes.butterworth,"active",true).process(El_sig_i);
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El_sig_i = Amplifier("amp_mode","ideal_no_noise","gain_mode","gain","amplification_db",9).process(El_sig_i);
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fprintf('Driver output power: %s dBm\n', num2str(El_sig.power));
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fprintf('Driver output peak voltage: %s Vpp \n', num2str(max(El_sig.signal)-min(El_sig.signal)));
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for laser_linewidth = wh.parameter.laser_linewidth.values
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% MAIN SIGNAL
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%%%%% MODULATE E/O CONVERSION %%%%%%
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vbias_rel = 0.6;
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u_pi = 2.9;
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vbias = -vbias_rel*u_pi;
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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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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 = Amplifier("amp_mode","ideal_no_noise","gain_mode","output_power","amplification_db",0).process(Opt_sig);
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% INTERFERENCE SIGNAL
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%%%%% MODULATE E/O CONVERSION %%%%%%
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[Opt_sig_i] = 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+1).process(El_sig_i);
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Opt_sig_i = Optfilter.process(Opt_sig_i);
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Opt_sig_i = Amplifier("amp_mode","ideal_no_noise","gain_mode","output_power","amplification_db",0).process(Opt_sig_i);
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j_ = wh.parameter.sir.length;
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i_ = wh.parameter.rop.length;
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ber_ffe=zeros(j_,i_);
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ber_dcavg=zeros(j_,i_);
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ber_adapt=zeros(j_,i_);
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ber_dcrem=zeros(j_,i_);
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patten=zeros(j_,i_);
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for j = 1:j_
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sir = wh.parameter.sir.values(j);
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%%%%% Interference Signal Fiber Prop %%%%%%
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Opt_sig_i_prop = Fiber("fsimu",Opt_sig_i.fs,"fiber_length",link_length/1000,"alpha",0.3,"D",0,"lambda0",1310,"gamma",0,"Dslope",0.07).process(Opt_sig_i);
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Opt_sig_i_prop = Amplifier("amp_mode","ideal_no_noise","gain_mode","output_power","amplification_db",Opt_sig.power-sir).process(Opt_sig_i_prop);
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%%%%% ADD Interference and Main Signal %%%%%%
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Opt_sig_comb = Opt_sig_i_prop + Opt_sig;
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%%%%% Interference Signal Fiber Prop %%%%%%
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Opt_sig_comb = Fiber("fsimu",Opt_sig_comb.fs,"fiber_length",link_length/1000,"alpha",0.3,"D",0,"lambda0",1310,"gamma",0,"Dslope",0.07).process(Opt_sig_comb);
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% % MPI Channel
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% Opt = channel_model_mpi(Opt_sig,link_length,mpi_path,sir);
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% Receiver ROP curve
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for i = 1:i_
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rop=wh.parameter.rop.values(i);
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% Set ROP
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Rx_sig = Amplifier("amp_mode","ideal_no_noise","gain_mode","output_power","amplification_db",rop).process(Opt_sig_comb);
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patten(j,i) = Rx_sig.power;
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%%%%%% Square Law %%%%%%
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Rx_sig = Photodiode("fsimu",fdac*kover,"dark_current",2e-08,"responsivity",1,"temperature",20,"nep",1.8e-11).process(Rx_sig);
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%%%%%% Lowpass PhDiode %%%%%%
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Rx_sig = Filter('filtdegree',2,"f_cutoff",70e9,"fs",fdac*kover,"filterType",filtertypes.gaussian,"active",true).process(Rx_sig);
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% Rx_sig.signal = Rx_sig.signal - mean(Rx_sig.signal);
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%
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% Rx_sig = Rx_sig.setPower(0,"dBm");
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if 0
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[b, a] = butter(1, 0.1e9/(Rx_sig.fs/2), 'high');
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% Rx_sig.spectrum("fignum",1111,"displayname","before HPF");
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Rx_sig.signal = filter(b, a, Rx_sig.signal);
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% Rx_sig.spectrum("fignum",1111,"displayname","after HPF");
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end
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% figure(111)
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% hold on
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% [h, f] = freqz(b, a, length(Rx_sig), Rx_sig.fs);
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% plot(f, 20*log10(abs(h)));
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% title('Magnitude Response of Digital High-Pass Filter');
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% xlabel('Frequency (Hz)');
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% ylabel('Magnitude (dB)');
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% grid on;
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%%%%%% Scope %%%%%%
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fadc = 256e9;
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Lp_scpe = Filter('filtdegree',4,"f_cutoff",100e9,"fs",fadc,"filterType",filtertypes.butterworth,"active",true);
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Scpe_sig = Scope("fsimu",fdac*kover,"fadc",fadc,...
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"delay",0,"fixed_delay",0,"filtertype",filtertypes.butterworth,...
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"samplingdelay",0,"rand_samplingdelay",0,"freq_offset",0,"samp_jitter",0,...
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"adcresolution",10,"quantbuffer",0.1,'block_dc',1,'lpf_active',1,'H_lpf',Lp_scpe).process(Rx_sig);
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% Scpe_sig.spectrum("displayname","Received Signal after Scope","fignum",201);
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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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if usemrds
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Scpe_sig = MRDS_coding("blocklength",512).dc_remove(Scpe_sig,"oversampling_factor",2);
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end
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%
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rmean = zeros(1,2);
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if 0
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data_in = Scpe_sig.signal;
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winlength = wl;
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for k = 1:winlength:length(data_in)
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try
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data = data_in(k:k+winlength-1);
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rmean(1) = mean(data);
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rmean = circshift(rmean,1);
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Scpe_sig.signal(k:k+winlength-1) = data - rmean(1);
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catch
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if k+winlength > length(data_in)
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data = data_in(k:length(data_in));
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else
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error('indice problem.')
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end
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rmean(1) = mean(data);
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Scpe_sig.signal(k:length(data_in)) = data - rmean(1);
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end
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end
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% Scpe_sig.signal = data_out;
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end
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% Scpe_sig.plot("fignum",313,"displayname",'after dc removal');
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%%%%%% Sync Rx signal with reference %%%%%%
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[Scpe_sig] = Scpe_sig.tsynch("reference",Symbols,"fs_ref",fsym);
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%%%%% EQUALIZE %%%%%%
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if ~usemrds
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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",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",[25,2,2],"sps",2,"decide",1);
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[EQ_sig,Noi] = Eq.process(Scpe_sig,Symbols);
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber_ffe(j,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(j,i)),' - - ROP: ',num2str(patten(j,i)),'dBm - - PAM-',num2str(M),' - - ',num2str(fsym*1e-9),' GBd']);
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%
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% %
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% Eq = FFE_FFDCAVG("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",1,"mu_buff",0.7);
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% [EQ_sig] = Eq.process(Scpe_sig,Symbols);
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% Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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% [~,errors_bm,ber_dcavg(j,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_dcavg(j,i)),' - - ROP: ',num2str(patten(j,i)),'dBm - - PAM-',num2str(M),' - - ',num2str(fsym*1e-9),' GBd']);
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[Eq] = 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",112);
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[EQ_sig,Noi] = Eq.process(Scpe_sig,Symbols);
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Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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[~,errors_bm,ber_adapt(j,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_adapt(j,i)),' - - ROP: ',num2str(patten(j,i)),'dBm - - PAM-',num2str(M),' - - ',num2str(fsym*1e-9),' GBd']);
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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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%
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%
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% Eq = FFE_DCremoval("epochs_tr",5,"epochs_dd",5,"len_tr",4096*2,"mu_dd",1e-4,"mu_tr",0,"order",25,"sps",2,"decide",1,"mu_dc",0.07,"dc_buffer_len",112);
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% [EQ_sig] = Eq.process(Scpe_sig,Symbols);
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% Rx_bits = PAMmapper(M,0).demap(EQ_sig);
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% [~,errors_bm,ber_dcrem(j,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_dcrem(j,i)),' - - ROP: ',num2str(patten(j,i)),'dBm - - PAM-',num2str(M),' - - ',num2str(fsym*1e-9),' GBd']);
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else
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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_sig] = Eq.process(Scpe_sig,Symbols);
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Rx_bits = MRDS_coding("blocklength",wl).decode(EQ_sig);
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Rx_bits = PAMmapper(M,0).demap(Rx_bits);
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[~,errors_bm,ber_ffe(j,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(j,i)),' - - ROP: ',num2str(patten(j,i)),'dBm - - PAM-',num2str(M),' - - ',num2str(fsym*1e-9),' GBd']);
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end
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end
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end
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for j = 1:j_
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sir = wh.parameter.sir.values(j);
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for i = 1:i_
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rop=wh.parameter.rop.values(i);
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wh.addValueToStorage(ber_ffe(j,i) ,'ber_ffe',M,datarate,sir,laser_linewidth,pn_key,rop);
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wh.addValueToStorage(ber_dcavg(j,i),'ber_dcavg',M,datarate,sir,laser_linewidth,pn_key,rop);
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wh.addValueToStorage(ber_adapt(j,i),'ber_adapt',M,datarate,sir,laser_linewidth,pn_key,rop);
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wh.addValueToStorage(ber_dcrem(j,i),'ber_dcrem',M,datarate,sir,laser_linewidth,pn_key,rop);
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end
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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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end
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end
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rop_curve;
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