add few files from home pc

test/bitwise_demapping_pam6.m

@@ -0,0 +1,43 @@
+
+
+%%%%% SETTINGS %%%%%%
+useprbs = 1;
+M   = 8;
+randkey = 1;
+fsym = 112e9;
+viewresults = 0;
+
+%%%%% Mapping %%%%%
+M = 6;
+data = 0:M-1;
+bitpersymbol = log2(M);
+
+s = RandStream('twister','Seed',1);
+bitpattern = randi(s,[0 1], 2^18, 1);
+bitpattern = bitpattern(1:end-mod(length(bitpattern),5));
+
+bits_tx = Informationsignal(bitpattern);
+
+symbols = PAMmapper(M,0).map(bits);
+
+pam6transitions = combvec(PAMmapper(M,0).levels,PAMmapper(M,0).levels)';
+
+pam6bits = PAMmapper(6,0,"eth_style",0).demap(reshape(pam6transitions',[],1)./sqrt(10));
+symbols_rx = PAMmapper(M,0).map(pam6bits).*sqrt(10);
+
+pam6bits = reshape(pam6bits',5,[])';
+
+figure; hold on
+scatter(pam6transitions(:,1), pam6transitions(:,2), 'x', 'LineWidth', 1);
+n = size(pam6transitions,1);
+labels = cellstr(char(pam6bits + '0'));   % -> N x 1 cell array of char rows
+text(pam6transitions(:,1), pam6transitions(:,2), labels, ...
+    'HorizontalAlignment','left', 'VerticalAlignment','bottom');
+
+
+
+bits_rx = PAMmapper(M,0).demap(symbols);
+
+[~,error_num,ber,error_pos] = calc_ber(bits_tx.signal,bits_rx.signal,"skip_front",0,"skip_end",0,"returnErrorLocation",1);
+
+PAMmapper(8,0).showBitMapping