%%
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 = [2, 0, 0];
M = 4;
trlength = 4096*4;
x = 225:10:285;
BER_PAM_4 = [];
filter_length = 210;
eq_method = 2;
num_signal_sweep = 11;
our_signal = 1;

idx = 4;

obj = @(x) first_analysis_ber( ...
    current(idx), power(idx), num_pf_coeff, taps_ffe, taps_dfe, ...
    M, trlength, eq_method, filter_length, num_signal_sweep, our_signal, x);

x0 = [1 0.1 0.1];
lb = [1 0 0];
ub = [10 1 1];

opts = optimoptions('fmincon', ...
    'Display','iter', ...
    'Algorithm','sqp', ...
    'MaxFunctionEvaluations', 500, ...
    'StepTolerance', 1e-3, ...
    'OptimalityTolerance', 1e-3);

[xbest, berbest] = fmincon(obj, x0, [], [], [], [], lb, ub, [], opts);