J4 ›› 2015, Vol. 42 ›› Issue (5): 43-47.doi: 10.3969/j.issn.1001-2400.2015.05.008

• Original Articles • Previous Articles     Next Articles

New switch degree distribution for the LT code

REN Peng;XIANG Zheng   

  1. (School of Telecommunication Engineering, Xidian Univ., Xi'an  710071, China)
  • Received:2014-05-05 Online:2015-10-20 Published:2015-12-03
  • Contact: REN Peng E-mail:pren@stu.xidian.edu.cn

Abstract:

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%.

Key words: digital fountain code, binary exponential distribution, robust soliton distribution, switch distribution