Research of LT Code Degree Distribution Based on Joint Degree Distribution

In view of the fact that the performance of the current fountain code distribution is degraded under the condition of short code length, a new binary-sliding robust soliton distribution is formed by combining the binary system distribution and the sliding robust soliton degree distribution, and the scale coefficient is introduced to make the joint degree distribution achieve better results. The simulation results show that in the case of short code length, the decoding performance is improved relative to these two degree distributions when the union degree distribution is used to encode LT codes.