School of Communication and Information Engineering;
Xi’an University of Science and Technology;
Xi’an 710054;
P.R.China;
School of Information and Control Engineering;
China Univesity of Mining and Technology;
Xuzhou 221116;
P.R.China;
spatially; coupled; LDPC; codes; spatially; coupled; RA; codes; rate; compatibility; density; evolution; iterative; decoding;