Noise thresholds of parallel concatenated LDPC codes

Author

Ko, Young-Jo ; Kim, Jung-Hoon

Author_Institution

Future Technol. Res. Div., Electron. & Telecommun. Res. Inst., Daejon, South Korea

Volume

4

fYear

2004

fDate

26-29 Sept. 2004

Firstpage

2525

Abstract

Density evolution can determine the noise threshold of an ensemble of LDPC codes in the limit of large block lengths. In this work, the capacity of code ensembles for the parallel concatenation of LDPC codes on binary-input AWGN channels is analyzed using the density evolution technique. The noise thresholds for the optimized code ensembles show that at low rates <1/3, some good parallel concatenated LDPC codes can outperform conventional ones with a similar complexity.

Keywords

AWGN channels; concatenated codes; interleaved codes; parity check codes; LDPC code noise threshold; binary-input AWGN channels; bipartite graphs; code ensemble concatenation capacity; density evolution; low code rates; low density parity-check codes; optimized code ensemble noise threshold; parallel concatenated LDPC codes; random interleaver; AWGN channels; Additive white noise; Belief propagation; Bipartite graph; Concatenated codes; Decoding; Gaussian noise; Joining processes; Parity check codes; Statistical distributions;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th

ISSN

1090-3038

Print_ISBN

0-7803-8521-7

Type

conf

DOI

10.1109/VETECF.2004.1400511

Filename

1400511