stuff from star

2025-03-03 09:16:58 +01:00
parent d099efea03
commit b05515d326
8 changed files with 109 additions and 26 deletions
--- a/Ordner/duobinary_histogram.m
+++ b/Ordner/duobinary_histogram.m
@@ -0,0 +1,51 @@
+
+
+
+figure(2)
+tiledlayout(1,3)
+cols = linspecer(5);
+cnt = 1;
+for m = [4,6,8]
+
+    M = m;
+    fsym = 112e9;
+    fdac = 256e9;
+    
+    [Digi_sig,Symbols,Tx_bits] = PAMsource(...
+        "fsym",fsym,"M",M,"order",19,"useprbs",1,...
+        "fs_out",fdac,...
+        "applyclipping",0,"clipfactor",1.5,...
+        "applypulseform",0,"pulseformer",NaN,...
+        "randkey",33,...
+        "db_precode",1,"db_encode",0,...
+        "mrds_code",0,"mrds_blocklength",512).process();
+    
+    Symbols_pre = Duobinary().precode(Symbols);
+    
+    Symbols_db = Duobinary().encode(Symbols_pre);
+    
+    if M == 4
+        Symbols_db.signal = Symbols_db.signal .*sqrt(2.5);
+    elseif M == 6
+        Symbols_db.signal = Symbols_db.signal .*sqrt(5.8);
+    elseif M == 8
+        Symbols_db.signal = Symbols_db.signal .*sqrt(10.5);
+    end
+    
+    % figure(1)
+    % hold on
+    % histogram(Symbols_db.signal,"EdgeAlpha",0.3,"Normalization","probability");
+    
+    
+    % figure(1)
+    nexttile
+    hold on
+    bar(unique(Symbols_db.signal),histcounts(int32(Symbols_db.signal),"Normalization","probability"),"FaceColor",cols(cnt,:),"FaceAlpha",0.6,"BarWidth",1-(0.2*cnt),"LineWidth",0.5,"EdgeColor",'black','DisplayName',['Duobinary PAM-',num2str(M)]);
+    xticks(unique(Symbols_db.signal));
+    ylim([0 0.26]);
+    xlabel("Symbol")
+    
+
+    cnt = cnt+1,
+
+end