High performance receiving and processing technology in satellite beam hopping communication  

作　　者：ZHAI Shenghua HUI Tengfei GONG Xianfeng ZHANG Zehui GAO Xiaozheng YANG Kai 

机构地区：[1]School of Communication Engineering,Xi’Dian University,Xian 710126,China [2]CAST(China Academy of Space Technology)-Xi’an Institute of Space Radio Technology,Xi’an 710010,China [3]School of Cyberspace Science and Technology,Beijing Institute of Technology,Beijing 100081,China [4]School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Journal of Systems Engineering and Electronics》2024年第4期815-828,共14页系统工程与电子技术（英文版）

基　　金：This work was supported by the Key Research and Development Program of Shaanxi(2022ZDLGY05-08);the Application Innovation Program of CASC(China Aerospace Science and Technology Corporation)(6230107001);the Research Project on Civil Aerospace Technology(D040304);the Research Project of CAST(Y23-WYHXJS-07);the Research Foundation of the Key Laboratory of Spaceborne Information Intelligent Interpretation(2022-ZZKY-JJ-20-01).

摘　　要：Beam-hopping technology has become one of the major research hotspots for satellite communication in order to enhance their communication capacity and flexibility.However,beam hopping causes the traditional continuous time-division multiplexing signal in the forward downlink to become a burst signal,satellite terminal receivers need to solve multiple key issues such as burst signal rapid synchronization and high-per-formance reception.Firstly,this paper analyzes the key issues of burst communication for traffic signals in beam hopping sys-tems,and then compares and studies typical carrier synchro-nization algorithms for burst signals.Secondly,combining the requirements of beam-hopping communication systems for effi-cient burst and low signal-to-noise ratio reception of downlink signals in forward links,a decoding assisted bidirectional vari-able parameter iterative carrier synchronization technique is pro-posed,which introduces the idea of iterative processing into car-rier synchronization.Aiming at the technical characteristics of communication signal carrier synchronization,a new technical approach of bidirectional variable parameter iteration is adopted,breaking through the traditional understanding that loop struc-tures cannot adapt to low signal-to-noise ratio burst demodula-tion.Finally,combining the DVB-S2X standard physical layer frame format used in high throughput satellite communication systems,the research and performance simulation are con-ducted.The results show that the new technology proposed in this paper can significantly shorten the carrier synchronization time of burst signals,achieve fast synchronization of low signal-to-noise ratio burst signals,and have the unique advantage of flexible and adjustable parameters.

关 键 词：beam-hopping high throughput satellite high per-formance reception processing 

分 类 号：TN927.2[电子电信—通信与信息系统]