CLEANUP - changes to folder structure

2026-03-25 10:57:48 +01:00
parent 0c5ad28f0a
commit 0ae846d3c3
351 changed files with 405 additions and 1294 deletions
--- a/Theory/Mapping_Coding/mapping_minimal_example.m
+++ b/Theory/Mapping_Coding/mapping_minimal_example.m
@@ -0,0 +1,118 @@
+
+
+%%%%% SETTINGS %%%%%%
+useprbs = 1;
+M   = 8;
+randkey = 1;
+fsym = 112e9;
+viewresults = 0;
+
+%%%%% Mapping %%%%%
+M = 8;
+data = 0:M-1;
+bitpersymbol = log2(M);
+
+%Bits
+bits = int2bit(data,bitpersymbol, true);
+
+%Integers
+ints = bit2int(bits,bitpersymbol, true);
+
+Tx_bits = Informationsignal(bits');
+Digi_Mod = PAMmapper(M,0);
+Symbols = Digi_Mod.map(Tx_bits);
+moveitgray = Symbols.signal;
+
+%Gray Symbol Mapping
+matlabgray = pammod(ints,M,0,'gray');
+scaling_factor = rms(unique(matlabgray));
+matlabgray = matlabgray ./ scaling_factor;
+
+
+%Demod 
+moveitgray = moveitgray.* scaling_factor;
+matlabgray = matlabgray .* scaling_factor;
+ints_demap = pamdemod(matlabgray,M,0,'gray');
+
+bits_demap = int2bit(ints_demap,bitpersymbol, true);
+
+% for i = 1:M
+%     fprintf('%d , %d , %d --> %d \n',bits(1,i),bits(2,i),bits(3,i),matlabgray(i));
+% end
+% 
+% for i = 1:M
+%     fprintf('%d , %d , %d --> %d \n',bits(1,i),bits(2,i),bits(3,i),moveitgray(i));
+% end
+
+scatterplot(matlabgray,1,0,'b*');
+for k = 1:M
+    text(real(matlabgray(k)),imag(matlabgray(k))+0.6,num2str(ints_demap(k)),"Color",[1 1 1]);
+
+    text(real(matlabgray(k)),imag(matlabgray(k))-1.6,num2str(bits(:,k)),"Color",'blue');
+    text(real(moveitgray(k)),imag(moveitgray(k))-3,num2str(bits(:,k)),"Color",'green');
+end
+axis([-M M -3 2])
+
+
+symbols = bit2int(bitGroups',bitpersymbol, true);
+
+
+%%%%% PRBS Generation in correct shape for Modulation Format %%%%%%
+O = 10; %order of prbs
+N = 2^(O-1); %length of prbs
+[~,seed] = prbs(O,1); %initialize first seed of prbs
+bitpattern=[];
+if useprbs
+    for i = 1:log2(M)
+        [bitpattern(:,i),seed] = prbs(O,N,seed);
+    end
+else
+    s = RandStream('twister','Seed',randkey);
+    for i = 1:log2(M)
+        bitpattern(:,i) = randi(s,[0 1], N, 1);
+    end
+end
+if M == 6
+    bitpattern = reshape(bitpattern,[],1);
+    bitpattern = bitpattern(1:end-mod(length(bitpattern),5));
+end
+
+Tx_bits = Informationsignal(bitpattern);
+
+%%%%% ACTUAL TEST: Back to Back Mapping: Bits -> Symbols and Symbols -> Bits  %%%%%%
+
+Digi_Mod = PAMmapper(M,0);
+
+symbols = bitMapper(bitpattern, M, 'PAM');
+
+
+Symbols = Digi_Mod.map(Tx_bits);
+
+Rx_bits = PAMmapper(M,0).demap(Symbols);
+
+
+%%%%% VALIDATION: BER is required to be zero %%%%%%
+
+[~,error_num,ber,error_pos] = calc_ber(Tx_bits.signal,Rx_bits.signal,"skip_front",0,"skip_end",0,"returnErrorLocation",1);
+
+
+%%%%% For User: Show Debug Info and Results %%%%%%
+
+if viewresults 
+    disp(['BER: ',sprintf('%.1E',ber),' - - PAM-',num2str(M)]);
+    
+    
+    figure
+    subplot(1,2,1)
+    hold on
+    title('Symbols Out')
+    stairs(Symbols_tx.signal(1:100,1),'LineWidth',2,'DisplayName','Tx Symbols')
+    legend
+    grid
+    subplot(1,2,2)
+    u = unique(Symbols_tx.signal);
+    scatter(0,u,'filled','o','LineWidth',2,'MarkerFaceColor',linspecer(1));
+    grid
+end
+
+