DMB+,新一代数据传播技术

DMB +,a novel data transmission technique

针对通信网络在公共信息发布时传输效率低、可靠性差等问题,提出DMB+(digital multimedia broadcast plus)数据传播新技术。采用编码正交频分复用(coded orthogonal frequency division multiplexing,COFDM)、终端识别等技术,以无线广播的方式,面向大量终端实时分类传输文字、数据、图片、视频等信息。DMB+具有无线传输、覆盖范围大、施工和维护简单等优点,可以弥补现有通信技术的不足,更适用于终端数量多和人群密集的应用场景,如学校、工矿企业、社区以及智慧城市和公共安全等相关应用。DMB+的时间精准性、数据安全性使其能在保密专用通信、工业控制以及中国制造2025应用中发挥特定的作用。全面介绍DMB+的研究背景、关键技术和应用方案,并对DMB+的产业前景进行了探讨。

A novel data transmission technique,defined as digital multimedia broadcast plus(DMB+),is proposed to complement the commercial communication network which suffers low efficiency and low reliability.Derived from DMB,DMB+changes its application direction fundamentally from digital radio to general data transmission.The merits of wireless transmission,big coverage,and easy to build and maintain,enable DMB+to behave better in the applications with numerous terminals and users,such as in schools and enterprises,as well as special applications of smart city and public safety etc.The high time precision and data safety make DMB+unique in independent networks,industrial control and the project of Made in China2025.This paper gives a comprehensive introduction about DMB+,including its research background,key technologies,applications,and prospects for development.