Advanced LT codes in satellite data broadcasting system

Author

Zhu, Hongpeng ; Li, Guangxia ; Xie, Zhidong

Author_Institution

Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China

fYear

2008

fDate

19-21 Nov. 2008

Firstpage

1431

Lastpage

1435

Abstract

The optimal degree distribution algorithm of LT codes of digital fountain was proposed, and its drawbacks in realization were mentioned. On the basis of optimal degree distribution, a practical suboptimal degree distribution algorithm was put forward. Through simulation, with respect to the channel efficiency in satellite data broadcasting system, advanced LT codes based on suboptimal degree distribution algorithm performed better than classical LT codes based on robust soliton degree distribution algorithm, RSE codes and that without packet level FEC technology. The conclusion of research is practically valuable in improving the channel efficiency of satellite data broadcasting system.

Keywords

codes; direct broadcasting by satellite; LT codes; optimal degree distribution algorithm; satellite data broadcasting system; soliton degree distribution algorithm; Artificial satellites; Broadcast technology; Data engineering; Decoding; Error probability; Forward error correction; Protocols; Robustness; Satellite broadcasting; Solitons; LT codes; digital fountain; satellite broadcasting; sub-optimal degree distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-2423-8

Electronic_ISBN

978-1-4244-2424-5

Type

conf

DOI

10.1109/ICCS.2008.4737419

Filename

4737419