changes from friday

Functions/applyPulseShaping.m

@@ -0,0 +1,34 @@
+function yout = applyPulseShaping(xin,fsym,fdac)
+
+if ~rem(fdac,fsym)
+    %ist ein Vielfaches
+    sps = fdac / fsym;
+    up = sps;
+    dn = 1;
+else
+    %ist kein Vielfaches
+    up = fdac / gcd(fdac, fsym);
+    dn = fsym / gcd(fdac, fsym);
+    sps= up;
+end
+
+%Bau das Filter (hier rrc)
+racos_len   = 2048;
+alpha       = 0.1;
+h           = rcosdesign(alpha,racos_len,sps);
+
+%Apply Filter using Matlab build in fctn.
+yout = upfirdn(xin,h,up,dn);
+
+%cut signal, which is longer due to fir filter
+st = round(up/dn*racos_len/2); %we need to cut y_out
+en = round(st + (length(xin)*up/dn) -1);
+
+yout = yout(st:en);
+
+%Check output integrity
+if round(up/dn * length(xin)) ~= length(yout)
+    warning('Check signal length after pulse shaping');
+end
+
+end