From: Spatially coupled turbo-coded continuous phase modulation: asymptotic analysis and optimization
Coded CPM
SC-CPM
LDPC+CPM
EXIT area
Binary CPM
1.11
0.43
0.56
0.24
Quaternary CPM
1.07
0.26
0.20
−0.01
Octal CPM
0.72
−0.16
−0.20
−0.37