【摘要】 对无线文件传输系统进行了设计,采用无线通信技术、计算机技术研制了无线文件发送终端,采用嵌入式微处理器、无线通信模块等电路设计了无线文件发送终端的硬件,构建了嵌入式Linux操作系统平台,移植了PPP协议,采用多进程开发了应用程序,应用TCP/IP协议和PPP协议设计了CDMA无线通信软件,并进行了调试和实验运行。在原有无线传输模块的基础上进行研发,根据无线网络特性进行系统优化,将无线传输速度提升到原来的4倍,实现了文件无线发送的功能。更多还原

【Abstract】 The terminal of wireless file transaction system is discussed and a general scheme of system is presented,and the wireless file transaction terminal is developed by wireless communication technology and computer technology.The terminal hardware is designed by embedded processor,wireless module.The platform of embedded Linux OS is built,and PPP protocol is ported.The application program is developed by multi-threads including CDMA wireless communication software using PPP and TCP protocol.The terminal is debugged and tested.The system is optimized based on the presented wireless transaction modules according to the character of the wireless network to promote the speed to four times and realize the function of wireless file transaction.更多还原