Every memoryless modulation scheme can be described as M vectors in an
N-dimensional space.
So the chunck-to-symbols requires as dimensionality parameter the N and
then it needs this array of numbers
s11, s12, … s1N,
s21, s22, … s2N,
…
SM1, sM2, … sMN
So a 2-dim orthogonal scheme is
N=2
table =
1 ,0,
0, 1
Achilleas