极短突发传输的导频设计及捕获方法研究  

Research on the Pilot Design and Acquiring Techniques for Very Short Burst Communications

作　　者：胡东伟[1,2] 雷岳俊 潘申富[1,2] 倪永婧[4] HU Dongwei;LEI Yuejun;PAN Shenfu;NI Yongjing(54th Institute of China Electronics Technology Corporation,Shijiazhuang 050080;Science and Technology of Communication Networks Laboratory,Shijiazhuang 050080;School of Information Engineering,Minzu University of China,Beijing 100081;College of Information Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050000)

机构地区：[1]中国电子科技集团公司第五十四研究所,石家庄050080 [2]通信网信息传输与分发技术重点实验室,石家庄050080 [3]中央民族大学信息工程学院,北京100081 [4]河北科技大学信息科学与工程学院,石家庄050000

出　　处：《舰船电子工程》2022年第4期66-73,共8页Ship Electronic Engineering

摘　　要：极短突发传输在抗干扰通信、应急救生通信、北斗有源定位,以及物联网通信中具有广泛应用。然而,极短突发传输的持续时间短,可资利用的数据量少,因而同步困难(尤其低信噪比下)。因此,短突发传输的帧结构设计,存在很大的研究空间。论文针对高斯信道和瑞利多径信道,分别提出两种导频设计方案。这两种方案,都将频偏跟踪导频与同步捕获帧头合并,没有专门的同步捕获帧头,因而突发长度大大缩小。给出了所提导频方案下的同步捕获方案,仿真验证了所提方案的可行性。Very Short Burst Communication Systems are extensively employed in anti-jamming communication systems,SOS communication systems,BeiDou active positioning,and Internet-of-Things(IOTs).However,because of the short support length of the burst,very few symbols could be exploited,and it is therefore difficult to get synchronized at the receiver.This situation is even more several when the Signal-to-Noise Ratio(SNR)is low.Therefore,for the frame structure design of very short burst communica⁃tions,there are big flexibilities needing to be investigated.In this paper,two pilot schemes under Additive White Gaussian Noise(AWGN)channel and multi-path channel respectively,both without a dedicated preamble for synchronization,as well as their corre⁃sponding acquiring techniques,are proposed.The support lengths of both schemes are therefore greatly reduced comparing to tradi⁃tional designs.Simulations are employed to verify the plausibility of the schemes.

关 键 词：短突发 导频 捕获 

分 类 号：TN915[电子电信—通信与信息系统]