  Fountain codes are becoming increasingly important for data transferring over
dedicated high-speed long-distance network. However, the encoding and decoding
complexity of traditional fountain codes such as LT and Raptor codes are still
high. In this paper, a new fountain codes named LRF (Loss Rate Based Fountain)
codes for data transfer is proposed. In order to improve the performance of
encoding and decoding efficiency and decrease the number of redundant encoding
symbols, an innovative degree distribution instead of robust soliton degree
distribution in LT (Luby Transfer) codes is proposed. In LRF codes, the degree
of encoding symbol is decided by loss rate property, and the window size is
extended dynamic. Simulations result using LRF codes show that the proposed
method has better performance in term of encoding ratio, degree ratio, encoding
and decoding efficiency with respect to LT and Raptor codes.
