Diversified SLT codes based on feedback for communication over wireless networks

Author

Lei Zhang ; Jianxin Liao ; Jingyu Wang ; Qi Qi ; Tong Xu ; Shengwen Tian ; Minyan Liao

Author_Institution

State Key Lab. of Networking & Switching Technol., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2013

fDate

28-31 Oct. 2013

Firstpage

1

Lastpage

6

Abstract

Fountain codes, such as LT (Luby transform) codes have been practical techniques for communication over wireless networks. RSD (Robust Soliton degree Distribution) is a key component of LT codes. However, LT codes do not make use of feedback. SLT (Shifted LT) codes have shown benefit by shifting RSD based on the number of recovered input symbols. However, degree values are limited to a small set. In this paper, DSLT (Diversified SLT) codes with a new degree distribution are proposed to explore the full potential of feedback. DSLT codes modify the RSD of LT codes in a different manner. They diversify the value of degree compared with SLT codes. Furthermore, hybrid SLT/DSLT codes were proposed to address the problem that most input symbols are recovered at the ending. We show both analytically and through real experiments, that DSLT codes have better performance in term of communication complexity and memory usage compared with SLT codes.

Keywords

codes; radio networks; DSLT code; LT code; Luby transform code; RSD; diversified SLT code; fountain code; memory usage; robust soliton degree distribution; wireless network; Barium; DSLT Codes; Feedback; Fountain Codes; SLT Codes; Wireless Networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Information Infrastructure Symposium, 2013

Conference_Location

Trento

Type

conf

DOI

10.1109/GIIS.2013.6684363

Filename

6684363