Title: Analysis of the degree distribution for LT codes
Authors: Guo Tai Chen; Lei Cao; Haifeng Zheng
The Department of Electronic and Information Engineering, Fuqing Branch, Fujian Normal University, Fujian, China
Department of Electrical Engineering, The University of Mississippi, Oxford, MS, USA
College of Physics and Information Engineering, Fuzhou University, Fujian, China
Abstract: As the first type of practical fountain codes, LT codes are used in various applications. Although the performance of an LT code is determined by the parameters of the Robust Soliton Distribution (RSD), this relationship remains largely unclear. In this paper, we analytically study the relationship between the mean degree value of the RSD and the parameters including the spike position and δ in RSD. Then, with obtained properties and simulation results, we further investigate the impact of these parameters on the performance of LT codes.
Keywords: LT codes; Luby Transform codes; fountain codes; robust soliton distribution; degree distribution; wireless computing.
Int. J. of Wireless and Mobile Computing, 2014 Vol.7, No.3, pp.224 - 230
Submission date: 03 Jun 2013
Date of acceptance: 28 Jul 2013
Available online: 29 May 2014