%%%%% 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