喷泉码不等错误保护的策略研究

igital Fountain code is proposed as a new channel coding scheme for the application characteristics of large scale data distribution and reliable broadcasting, and it becomes a research hotspot to experts and scholars in recent years. In some multimedia applications, it raises a need for fountain code with unequal error protection (UEP) transmission strategy. Using LT code as an example, this paper provides analysis and research for implementation of unequal error protection fountain code, proposes a improved method. The simulation results show that the improved method of UEP achieves better performance than the original method when the receiver gets few coding symbols.