Paper Info
Title
Decoding and Design of LDPC Codes for High-Order Modulations
Abstract
A concatenated code model is proposed for high-order low-density parity-check (LDPC) coded modulations. A corresponding concatenated-code belief propagation (CCBP) decoding algorithm is derived for our proposed concatenated code. Moreover, the design of LDPC codes under the CCBP decoding is developed using extrinsic information transfer (EXIT) charts. Compared with other algorithms, the CCBP method provides an excellent parallel decoding process, and the EXIT-based design method offers highly accurate LDPC code ensembles. Simulation results show that the performance of the proposed CCBP algorithm is superior to that of the conventional belief propagation decoding within a wide range of modulation orders, and the EXIT-based method can design capacity-approaching LDPC codes for high-order modulations.
Year
DOI
Venue
2011
10.1007/s11277-009-9830-0
Wireless Personal Communications
Keywords
Field
DocType
Low-density parity-check (LDPC) codes,High-order modulations,Belief propagation (BP),Extrinsic information transfer (EXIT) charts
Concatenated error correction code,Low-density parity-check code,Computer science,Serial concatenated convolutional codes,Real-time computing,Modulation,Concatenation,Decoding methods,Modulation (music),Belief propagation
Journal
Volume
Issue
ISSN
56
2
0929-6212
Citations 
PageRank 
References 
2
0.38
11
Authors
2
Name
Order
Citations
PageRank
Wu Guan120.38
Haige Xiang215430.35