SP短信服务平台的设计 是在linux系统下，设计上行与下行，与中国联通的短信网关通信的文档-SP SMS service platform is designed to be in the linux system, the design of the uplink and downlink, with China Unicom message gateway communication documents

全双工集成无源光网络及光无线通信系统,该系统用可见光LED作为下行,用红外LED作为上行，全双工系统的速率为5Gb/s,光无线系统的速率为250Mb/s.-Full-duplex integrated passive optical network and optical wireless communication system, which use visible LED as a downlink, using infrared LED as uplink, the rate of ful