Title :
Non-uniform spatial coupling
Author :
Jardel, Fanny ; Boutros, Joseph J.
Author_Institution :
Communicating Syst. Lab., CEA, Gif-sur-Yvette, France
Abstract :
A new method for spatial coupling of low-density parity-check ensembles is proposed. The method is inspired from overlapped layered coding. Edges of local ensembles and those defining the spatial coupling are separately built. The new method allows the construction of non-uniform coupling chains with near-Shannon spatially-varying thresholds under iterative decoding. A direct application of non-uniform spatial coupling is unequal error protection of information.
Keywords :
iterative decoding; parity check codes; iterative decoding; local ensemble edges; low-density parity-check ensembles; near-Shannon spatially-varying thresholds; nonuniform spatial coupling chains; overlapped layered coding; unequal error protection; Channel coding; Convolutional codes; Couplings; Equations; Iterative decoding;
Conference_Titel :
Information Theory Workshop (ITW), 2014 IEEE
Conference_Location :
Hobart, TAS
DOI :
10.1109/ITW.2014.6970871
