%%
ffe_start = 0;
ffe_step = 5;
ffe_end = 30;
ffe_first_order = ffe_start:ffe_step:ffe_end;

current = 225:10:285;
current = string(current);
power = [28.02, 33.2, 37.5, 42.3, 46.3, 49.3, 53.4];
power = string(power);
num_pf_coeff = 4;
% taps_ffe = [300, 0, 0];
taps_dfe = [0, 0, 0];
M = 4;
trlength = 4096*4;
x = 225:10:285;
BER_PAM_4 = [];

for i = 1:length(ffe_first_order)
    for eq_method = 2
        for j = 4
            BER_run = first_analysis_ber(current(j), power(j), num_pf_coeff, [300, 15, ffe_first_order(i)], taps_dfe, M, trlength, eq_method);
            BER_PAM_4 = [BER_PAM_4, BER_run];
        end
    end
end
save('C:\Users\magf\Desktop\Desktop\MATLAB-Zeugs\Silas DSP\imdd_simulation\projects\FSO_transmission\BER_PAM_4_FFE_Second_Order_Tap_Sweep.mat', 'ffe_first_order', 'BER_PAM_4')
BER_PAM_4 = [];

%%
BER = load('C:\Users\magf\Desktop\Desktop\MATLAB-Zeugs\Silas DSP\imdd_simulation\projects\FSO_transmission\BER_PAM_4_FFE_Second_Order_Tap_Sweep.mat');
BER = BER.BER_PAM_4;
    
figure(202120)
plot(ffe_first_order, BER, '-o','LineWidth',1.75);
hold on

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);

% FEC Labels direkt im Plot
text(286,2.2e-2,'o-FEC','Color','k','FontSize', 14, 'Interpreter','latex')
text(285,3.3e-3,'HD-FEC','Color','b','FontSize', 14, 'Interpreter','latex')
text(282.5,5.4e-3,'KP4+Hamming','Color','g','FontSize', 14,'Interpreter','latex')
text(287,2.4e-4,'KP4','Color','r','FontSize', 14,'Interpreter','latex')

xlabel('Number of DFE First Order Taps', 'Interpreter','latex')
ylabel('BER', 'Interpreter','latex')
% title('BER for PAM-4', 'Interpreter','latex')

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