measure = 1;

freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",70,"f_ref",256e9);
%
Digi_sig = freqresp.buildOFDM();

Digi_sig.spectrum("fignum",1112,"displayname",['maxamp:',num2str(maxamp)]);

Digi_sig = Filter('filtdegree',3,"f_cutoff",70e9,"fs",256e9,"filterType",filtertypes.butterworth,"active",true).process(Digi_sig);

Digi_sig = Filter('filtdegree',3,"f_cutoff",70e9,"fs",256e9,"filterType",filtertypes.bessel_inp,"active",true).process(Digi_sig);


freqresp.estimate(Digi_sig,"fileName",'','save',false);

freqresp.plot()

a = gca;
a.YTick = [-30,-20,-10,0];