说明：  利用opnet对802.11无线网络的性能分析与评估，国外最新文章，介绍了无线网络在opnet下的运行的性能，并得出一个新的结论。
(Using opnet 802.11 wireless network performance analysis and evaluation, the latest article describes the running performance of the wireless network in opnet, and draw a new conclusion. )