function [eq_package] =  duobinary_signaling(eq_, mlse_,M ,rx_signal, tx_symbols, tx_bits)
    %Duobinary Signaling

    [eq_signal, eq_noise] = eq_.process(rx_signal,tx_symbols);

    eq_signal = mlse_.process(eq_signal);

    eq_signal = Duobinary().encode(eq_signal);
    eq_signal = Duobinary().decode(eq_signal);

    % M = numel(unique(eq_signal.signal));
    rx_bits = PAMmapper(M,0).demap(eq_signal);

    [~,numErrors,ber,~] = calc_ber(rx_bits.signal,tx_bits.signal,"skip_front",100,"skip_end",150,"returnErrorLocation",1);

    eq_package.ber = ber;
    
end