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Title: Generation of luby transform codes with low redundancy
Authors: Zhao, Y
Lau, FCM 
Zhu, Z
Zhang, W
Keywords: Binary erasure channel
Low redundancy
Luby transform code
Tanner graph
Issue Date: 2015
Publisher: World Scientific
Source: International journal of bifurcation and chaos in applied sciences and engineering, 2015, v. 25, no. 5, 1550072 How to cite?
Journal: International journal of bifurcation and chaos in applied sciences and engineering 
Abstract: Given the same number of encoded symbols, a Luby Transform (LT) decoder is more likely to decode successfully when there is little redundancy among the symbols. With the use of a Tanner graph, we describe two kinds of redundancy appearing in LT codes in this paper. We further propose an encoding algorithm called Low Redundancy (LR) algorithm used in the formation of the encoded symbols. The algorithm aims to reduce the redundancy of LT codes and to improve the decoder performance under the same complexity. Simulation results show various LT codes improve in terms of average overhead factor and probability of successful decoding when the codes are encoded using the proposed LR algorithm. Moreover, the encoding complexity remains unchanged.
ISSN: 0218-1274
EISSN: 1793-6551
DOI: 10.1142/S0218127415500728
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