M = 4;
randkey = 1;
order = 17;

N = 2^(order-1); %length of prbs
bitpattern = zeros(N,log2(M));
s = RandStream('twister','Seed',randkey);
for i = 1:log2(M)
    bitpattern(:,i) = randi(s,[0 1], N, 1);
end

if M == 6
    bitpattern = reshape(bitpattern',[],1);
    bitpattern = bitpattern(1:end-mod(length(bitpattern),5));
end

bits = Informationsignal(bitpattern);
% bits = bits.logbookentry(['Generate bit stream with size: ', num2str(size(bitpattern))]);

symbols = PAMmapper(M,0).map(bits);

PAMmapper(M,0).showBitMapping