In this paper we propose a new class of spatially coupled codes based on repeat-accumulate protographs. We show that spatially coupled repeat-accumulate codes have several advantages over spatially coupled low-density parity-check codes including simpler encoders and slightly higher code rates than spatially coupled low-density parity-check codes with similar thresholds and decoding complexity (as measured by the Tanner graph edge density).
@article{arxiv.1110.6787,
title = {Spatially Coupled Repeat-Accumulate Codes},
author = {Sarah J. Johnson and Gottfried Lechner},
journal= {arXiv preprint arXiv:1110.6787},
year = {2011}
}