A new design on degree distribution of LT code based on poisson and moved-RSD distribution
Meng Zhang, Lifang Feng · 2017
In this paper, a Poisson-Moved-Robust Solition Distribution (PMRSD) degree distribution is proposed based on Poisson distribution and the Moved Robust Solition Distribution (Moved-RSD). In the encoder, Poisson distribution is utilized to construct enough encoded data packets of small-degree, and Moved Robust Solition Distribution is used to generate encoded data packets of big-degree. The decoder can achieve completely decoding without interrupted because it is assured that the encoded data packets can contain all information of source data packets. The simulation results show that, comparing to New-Switch degree distribution-based LT code, the new PMRSD degree distribution-based LT code has advantages in improved decoding efficiency, reduced decoding overhead and bit error rate (BER).