Braided Convolutional Codes: A Class of Spatially Coupled Turbo-Like Codes
Paper i proceeding, 2014

In this paper, we investigate the impact of spatial coupling on the thresholds of turbo-like codes. Parallel concatenated and serially concatenated convolutional codes as well as braided convolutional codes (BCCs) are compared by means of an exact density evolution (DE) analysis for the binary erasure channel (BEC). We propose two extensions of the original BCC ensemble to improve its threshold and demonstrate that their BP thresholds approach the maximum-a-posteriori (MAP) threshold of the uncoupled ensemble. A comparison of the different ensembles shows that parallel concatenated ensembles can be outperformed by both serially concatenated and BCC ensembles, although they have the best BP thresholds in the uncoupled case.

Författare

Michael Lentmaier

Lunds Universitet

Saeedeh Moloudi

Lunds Universitet

Alexandre Graell i Amat

Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

International Conference on Signal Processing and Communications (SPCOM). Invited Paper. Bangalore, India, 22-25 July 2014

Art. no. 6983939- 6983939

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/SPCOM.2014.6983939

ISBN

978-147994665-5