Yang Yi, Yin Yafang, Liu Jihong. Study of an importance sampling simulation method and its application[J]. 2006,(4):18-19. DOI: 10.13756/j.gtxyj.2006.04.007.
are analyzed.The experimental results show that low probability events of large Differential Group Delay(DGD) can be resulted by importance sampling simulation and the system configuration is much simpler than by the standard Monte-Carlo method.