【摘要】 介绍了iDEN(integrated Digital Enhanced Network)专网的VSELP语音压缩编码、M-16QAM调制等关键技术特点以及集群调度、数据传输等主要功能,并结合现代物流信息系统的实际需求特性,进行基于iDEN专网的现代物流信息系统总体架构与系统功能设计,进而对各子系统具体功能做出详细分解。综合运用基于iDEN的车辆定位、图像监控等技术实现各子系统的主要功能。最后对iDEN专网在深圳市现代物流子系统中的应用情况进行了介绍。更多还原

【Abstract】 It introduced the key technological features of VSELP speech compression coding,M-16QAM modulation,and the main functions of trunking dispatching and data transmission of iDEN.On this basis,it combined the actual needs of modern logistics information system to design the total frame of the modern logistics information system and systematic function based on iDEN.Then,it resolved the functions of all the subsystems in detail.Furthermore,it showed the main functions of all the subsidiary systems through the synthetic technology of vehicles’ location and image surveillance based on iDEN.Finally,the actual operation of iDEN in Shenzhen was introduced.更多还原