%%
x = 225:10:285;
averaging_over_signal_traces = 1;
all_BER_plots = 0;
for k = 1:4
    BER = load('C:\Users\magf\Desktop\Desktop\Projekte\FSO\Data\BER_PAM_2_Optimal' + string(k) + '.mat');
    BER_values = BER.BER_PAM_2;
    idx_opt = BER.idx_opt;
    BER_num_signal_sweep_matrix = BER.BER_num_signal_sweep_matrix;
    disp(idx_opt)

    BER_num_signal_sweep_matrix = BER_num_signal_sweep_matrix(((k-1)*7+1:k*7),:);

    if averaging_over_signal_traces
        for i = 1:size(BER_values,2)
            BER_values(i) = mean(BER_num_signal_sweep_matrix(i,:));
        end
    end

    if all_BER_plots
        figure;
        hold on
        for i = 1:size(BER_num_signal_sweep_matrix,1)
            plot(BER_num_signal_sweep_matrix(i,:))
        end
        hold off
    end
    
    figure(202120)
    plot(x, BER_values, '-o','LineWidth',1.75);
    hold on
end
old_BER = [-1.5, -1.75, -2, -2.3, -2.6, -2.25, -1.95];
old_BER = 10.^(old_BER);
plot(x, old_BER, '-o','LineWidth',1.75)
    
h1 = yline(2e-2,  ':k', 'LineWidth',1.5);
h2 = yline(3.8e-3,':b', 'LineWidth',1.5);
h3 = yline(4.85e-3,':g', 'LineWidth',1.5);
h4 = yline(2.2e-4,':r', 'LineWidth',1.5);

% Legende NUR für Kurven
legend('FFE', 'FFE+PF+MLSE', 'DB', 'ML-MLSE', 'BER Paper', ...
       'Interpreter','latex', ...
       'Location','southwest', 'FontSize', 14)

% FEC Labels direkt im Plot
text(221,2.2e-2,'o-FEC','Color','k','FontSize', 14, 'Interpreter','latex')
text(221,3.3e-3,'HD-FEC','Color','b','FontSize', 14, 'Interpreter','latex')
text(221,5.4e-3,'KP4+Hamming','Color','g','FontSize', 14,'Interpreter','latex')
text(231,2.4e-4,'KP4','Color','r','FontSize', 14,'Interpreter','latex')

xlabel('Laser Bias Current [mA]', 'Interpreter','latex')
ylabel('BER', 'Interpreter','latex')
% title('BER for PAM-2', 'Interpreter','latex')

grid minor
ylim([1e-4 5e-1])
set(gca,'YScale','log')
% beautifyBERplot
hold off