[RX]

- plot df_track

git-svn-id: http://moon:8086/svn/matlab/trunk@53 801c6759-fa7c-4059-a304-17956f83a07c

ofdm/ofdm_rx.m

@@ -244,6 +244,7 @@ H_pilots = [];
 sym_out = [];
 kk = 1;
 H_ = [];
+df_track_ = [];
 for k=start:length(Z_)
     
     %shifted symbol index
@@ -255,7 +256,8 @@ for k=start:length(Z_)
     carrier_gain_bins = c2i(N, carrier_gain);
 
 	if ~isempty(H_pilots)
-		delta_freq_offset = fs/(2*pi*N)*angle( H_pilots * conj(H2_))
+		df_track = fs/(2*pi*N)*angle( H_pilots * conj(H2_));
+		df_track_ = [df_track_ df_track];
 	end
 	H2_ = H_;
 	H_= Z_(carrier_gain_bins, k)./(mag_gain.*exp(j*2*pi*phi_gain/1024)).';
@@ -307,5 +309,8 @@ for k=start:length(Z_)
 
 end
 
+figure;
+plot(df_track_); grid; title('df_{track}');
+
 function Y = spec_order(N, X)
     Y = [X(N/2+1:N)' X(1:N/2)']';