EWF码是一种有不等差错保护（UEP）特性的喷泉码，此程序给出了实现方法。-EWF codes are a class of fountain codes with unequal error protection (UEP) property. This programme gives the implementation method.

2007年最早提出UEP LT码的文章，weighted LT码的极限性能仿真程序，计算的是理论值，有RSD和固定度分布两种情况。-2007 first proposed UEP LT code article, weighted LT codes limit performance simulation program that calculates the theoretical value, there is a fixed distribution RSD and two cases.