function [C_n, f_n, s_T] = get_transmitted_pulse()

    config_parameters;
    
    s_T = complex(zeros(1, len));
    C_n = zeros(1, len);
    f_n = zeros(1, len);
    
    for t_idx = 1:len
        t = range_t(t_idx);
        p = rem(t, T_r); % p = t - nT_r
    
        if (p > T_p)
            continue
        end
    
        C_n(t_idx) = floor(rand * (M - 1));
        f_n(t_idx) = f_c + C_n(t_idx) * Delta_f;
        s_T(t_idx) = exp(1j * 2 * pi * f_n(t_idx) * p);
    end

    real_s_T = real(s_T);
    imag_s_T = imag(s_T);

    if figure_flag_1
        figure(1)
        title("Transmitted signal")
        subplot(2, 1, 1);
        plot(range_t, imag_s_T);
        xlabel("Time (s)");
        ylabel("sin(\omega t)");
        ylim([-1, 1]);
    
        subplot(2, 1, 2);
        plot(range_t, real_s_T);
        xlabel("Time (s)");
        ylabel("cos(\omega t)");
        ylim([-1, 1]);
    end
end