中文摘要：

针对LT喷泉码,为进一步增加小度值的可译码集出现概率,限制二进制指数度分布的最大度值,提出了截短二进制指数度分布;为进一步增加大度值的可译码集出现概率,改变鲁棒孤子度分布的分布值,提出了滑动的鲁棒孤子度分布.结合这两种度分布,建立了一种新的开关度分布.仿真结果表明,新的开关度分布进行LT编码时的初始译码成功率达到了56%,整体译码成功率高于原始的开关度分布约9%~12%.

英文摘要：

Truncated-binary exponential distribution is proposed for improving the occurrence of the decoding set,and Moved-robust soliton distribution is simultaneously put forward for increasing the occurrence of the decoding set.Combining the above two distributions,a new switch distribution is constructed in this paper.Simulation results show that the proposed method can reach 56% of initial decoding success,and that the total decoding success rate is higher than that by the original method by 9%~12%.