On the design, simulation and analysis of parallel concatenated Gallager codes

Author

Behairy, Hatim ; Chang, Shih-Chun

Author_Institution

George Mason Univ., Fairfax, VA, USA

Volume

3

fYear

2002

fDate

2002

Firstpage

1850

Abstract

We present a framework for designing a class of concatenated codes based on low-density parity-check component codes that we call parallel concatenated Gallager codes (PCGC). The iterative decoding trajectories technique is used to explain the performance of PCGC. Simulation results show an enhanced performance in the practical E_b/N₀ range in both AWGN and flat Rayleigh fading channels. The reduced decoding complexity of the proposed coding scheme along with its good performance makes it an attractive candidate in delay sensitive applications.

Keywords

AWGN channels; Rayleigh channels; concatenated codes; error detection codes; iterative decoding; AWGN channels; PCGC; concatenated codes; decoding complexity reduction; delay sensitive applications; flat Rayleigh fading channels; iterative decoding trajectories; low-density component codes; low-density parity-check codes; parallel concatenated Gallager codes; performance; simulation; AWGN; Analytical models; Concatenated codes; Delay; Fading; Gaussian approximation; Iterative decoding; Maximum likelihood decoding; Parity check codes; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2002. ICC 2002. IEEE International Conference on

Print_ISBN

0-7803-7400-2

Type

conf

DOI

10.1109/ICC.2002.997168

Filename

997168