Paper Info
Title
A Phenomenological Study On Threshold Improvement Via Spatial Coupling
Abstract
Kudekar et al. proved an interesting result in low-density parity-check (LDPC) convolutional codes: The belief-propagation (BP) threshold is boosted to the maximum-a-posteriori (MAP) threshold by spatial coupling. Furthermore, the authors showed that the BP threshold for code-division multiple-access (CDMA) systems is improved up to the optimal one via spatial coupling. In this letter, a phenomenological model for elucidating the essence of these phenomenon, called threshold improvement, is proposed. The main result implies that threshold improvement occurs for spatially-coupled general graphical models.
Year
DOI
Venue
2011
10.1587/transfun.E95.A.974
IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES
Keywords
DocType
Volume
spatial coupling, threshold saturation, belief propagation (BP), dynamical systems
Journal
E95A
Issue
ISSN
Citations 
5
0916-8508
16
PageRank 
References 
Authors
0.98
6
3
Name
Order
Citations
PageRank
Keigo Takeuchi19312.11
Toshiyuki Tanaka219019.98
Tsutomu Kawabata3478.92