New MPI mitigation schemes // Duobinary // Start of FTN schemes

projects/standard_system/freqresp_test.m

@@ -0,0 +1,28 @@
+measure = 0;
+
+
+if measure
+    freqresp = ChannelFreqResp("Nacq",1024,"Navg",64,"Ncp",70,"f_ref",256e9);
+    % 
+    Digi_sig = freqresp.buildOFDM();
+else
+    [Digi_sig,Symbols,Bits] = PAMsource("fsym",fsym,"M",M,"order",18,"useprbs",0,...
+            "fs_out",M8199.fdac,"applyclipping",1,"clipfactor",1.7,"applypulseform",1,"pulseformer",Pform,"randkey",pn_key,"mrds_code",usemrds,"mrds_blocklength",512).process();
+end
+
+Digi_sig.spectrum("fignum",1112,"displayname",['Signal']);
+
+maxamp = -1;
+El_sig = freqresp.precomp(Digi_sig,"maxampdb",maxamp);
+
+El_sig.spectrum("fignum",1112,"displayname",['maxamp:',num2str(maxamp)]);
+
+El_sig = Filter('filtdegree',2,"f_cutoff",60e9,"fs",256e9,"filterType",filtertypes.butterworth,"active",true).process(El_sig);
+
+if measure
+    freqresp.estimate(El_sig,"fileName",'','save',false);
+end
+
+
+
+El_sig.spectrum("fignum",1112,"displayname",['after filter; maxamp:',num2str(maxamp)]);