EQ Structures for MPI mitigation

projects/MPI_August/EQ_development_ffe_dc_avg.m

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+
+
+
+Scope_sig = load("projects/MPI_August/scpe_sig.mat","Scpe_sig");
+Scope_sig = Scope_sig.Scpe_sig;
+Symbols = load("projects/MPI_August/symbols.mat","Symbols");
+Symbols = Symbols.Symbols;
+Bits = load("projects/MPI_August/bits.mat","Bits");
+Bits = Bits.Bits;
+
+
+mubuff = [0.7];
+
+for m = 1:numel(mubuff)
+
+    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",0,"mu_buff",mubuff(m));
+    
+    [EQ_sig] = Eq.process(Scope_sig,Symbols);
+    
+    %%%%% DEMAP %%%%%%
+    Rx_bits = PAMmapper(4,0).demap(EQ_sig);
+    
+    % BER
+    [~,errors_bm,ber,errors] = calc_ber(Rx_bits.signal,Bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);
+    
+    disp(['BER: ',sprintf('%.1E',ber)]);
+
+end
+
+% fs = 2*112e9;
+% N = 2^(nextpow2(length(Eq.error(1,:)))-6);
+% [p_lin,w] = pwelch(Eq.error(1,:),hanning(N),N/2,N,fs,"centered","power","mean");
+% p_dbm = 10*log10(p_lin)+30; %dB to dBm in case of "power"
+
+% figure(123);  % If figure does not exist, create new figure
+% hold on
+% plot(w.*1e-9,p_dbm,'DisplayName',['bla'],'LineWidth',1);
+% xlabel("Frequency in GHz");
+% %ylabel("Power/frequency (dB/Hz)");
+% ylabel("Power (dBm)");
+% xlim([-fs/2 fs/2].*1e-9)
+% edgetick = 2^(nextpow2(fs*1e-9));
+% xticks([-edgetick:16:edgetick]);
+% xlim([-244, 244])
+% ylim([-120,-0]);
+% yticks([-200:10:10]);
+% legend
+
+
+%%%% Look at Pam levels %%%%%
+if 1
+    a = PAMmapper(4,0).separate_pamlevels(EQ_sig);
+    figure(15);hold on;scatter(1:EQ_sig.length,a,1,'.');
+end
+
+