M           = wh.parameter.M.values(1);
datarate    = wh.parameter.datarate.values(1);
sirs         = wh.parameter.sir.values;
laser_linewidths = wh.parameter.laser_linewidth.values;
pnoi         = wh.parameter.pn_key.values;
rop         = wh.parameter.rop.values;
winlengths         = wh.parameter.winlength.values(1);

cols = linspecer(numel(winlengths));
figure(44);
hold on


cntlw = 0;

for laser_linewidth = laser_linewidths
    cntlw = cntlw+1;
    cntsir = 0;
    for sir = sirs
        cntsir = cntsir+1;
        for pnk = pnoi
            
    
    
            %cnt = cnt+1;
            ber_ffe        = wh.getStoValue('ber_ffe',M,datarate,sir,laser_linewidth,pnk,rop,winlengths);
            rrop_ffe(cntsir)  = getIntersection(ber_ffe,rop);
            

        end
    end

    plot(sirs,rrop_ffe,'DisplayName',['Linewidth: ',num2str(laser_linewidth.*1e-6),' MHz'],"LineWidth",1,"LineStyle","-","Marker",".","MarkerSize",10)
    xlabel('Signal to Interference Ratio (dB)');
    ylabel('Sensitivity in dBm');
    title('Receiver Sensitivity vs. SIR');
    set(gca,'Box','on');
    grid on;
    grid minor
    legend

end





function i = getIntersection(ber,rop)

%get intersection between rop curve and hd-fec limit
hdfec = 3.8e-3 .* ones(size(ber));
i = InterX([rop;hdfec'],[rop;ber']);

if isempty(i)
    i = NaN;
else
    i = i(1);
end
end