计算机工程与科学2018，Vol.40Issue(1)：45-51,7.DOI:10.3969/j.issn.1007-130X.2018.01.007
基于数字广播信令聚合的高可靠应急传输
High reliable emergency warning based on digital broadcast signaling aggregation
摘要
Abstract
Terrestrial digital video broadcasting system is mainly used to provide audio and video communication services,and can be applied to information dissemination in emergency situations.However,in some special circumstances such as war or natural disasters,the established signal transmitting system tends to be damaged and it may be difficult to achieve reliable broadcasting.In view of the above problems,this paper takes DVB-T system as an example and proposes a high reliable emergency warning method based on digital broadcast signaling aggregation,which can achieve high reliable short message transmission under low transmission power.In a pre-set fixed transmission mode,the method utilizes the saved signaling part to carry the short message data,uses the non-binary Low Density Parity Check Codes (LDPC) with the rate of 1/2 in the field of GF(16) and the repeat coding as the channel coding scheme,and uses Binary Phase Shift Keying as the modulation method.Further,the proposed method is tested and verified on the software-defined radio platform in an open environment.The results show that this method can achieve high reliable transmission of emergency short message data,and can be extended to other digital broadcasting system.关键词
地面数字广播/数字广播信令/短消息传输/软件无线电平台Key words
terrestrial digital video broadcasting system/digital broadcast signalling/short message transmission/software-defined radio platform分类
信息技术与安全科学引用本文复制引用
高剑,陈为刚,杨晋生..基于数字广播信令聚合的高可靠应急传输[J].计算机工程与科学,2018,40(1):45-51,7.基金项目
天津市科技兴海项目(KJXH2011-2) （KJXH2011-2）
