Spatial Coupling for Distributed Storage and Diversity Applications Conference Paper uri icon

abstract

  • © 2015 IEEE. Low-density parity-check codes are considered for erasure channels, mainly Root-LDPC codes that include a special type of checknodes. Spatial coupling is applied on parity bits of a Root-LDPC ensemble designed for a channel with 4 block-erasure states and a maximal design rate of 3/4 attaining double diversity. The advantage of spatial coupling is shown in the erasure plane as an improvement of a threshold boundary, under independent erasures. The spatial coupling maintains the double diversity because it connects parity bits only. The drawback of this partial coupling is a weak saturation of the threshold boundary towards the capacity boundary.

author list (cited authors)

  • Jardel, F., Boutros, J. J., Dedeoglu, V., Sarkiss, M., & Othman, G.

citation count

  • 4

publication date

  • November 2015

publisher