An Adaptive Transmission Scheme for Deep Space Communication  

作　　者：SUN Zezhou WANG Le WANG Chenghua ZHU Qiuming ZHANG Xiaofei LIU Weiqiang LI Xiangyu 

机构地区：[1]Institute of Spacecraft System Engineering,China Academy of Space Technology [2]Key Laboratory of Radar Imaging and Microwave Photonics of Ministry of Education,College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2019年第1期26-35,共10页南京航空航天大学学报（英文版）

摘　　要：Deep space communication is quite different from conventional ground communication due to its time-varying,complexity and large signal delay,which consequently affects communication quality and system efficiency.Adjusting the transmission parameters when the channel environment changes during the communication can guarantee the performance index of the system,and therefore improve communication efficiency. An adaptive transmission scheme of transceiver based on Consultative Committee for Space Data Systems(CCSDS)protocols is proposed in this paper. According to the variation of the deep space channel,the symbol rate of transmission data is adjusted dynamically by estimating the signal-to-noise ratio(SNR) of the receiver in real time and adjusting the channel environment. This scheme can improve the channel utilization and system throughput under the premise of limiting the system bit error rate. Furthermore,this scheme is successfully implemented in Xilinx Virtex-5 FPGA board.Deep space communication is quite different from conventional ground communication due to its time-varying,complexity and large signal delay,which consequently affects communication quality and system efficiency.Adjusting the transmission parameters when the channel environment changes during the communication can guarantee the performance index of the system,and therefore improve communication efficiency. An adaptive transmission scheme of transceiver based on Consultative Committee for Space Data Systems(CCSDS)protocols is proposed in this paper. According to the variation of the deep space channel,the symbol rate of transmission data is adjusted dynamically by estimating the signal-to-noise ratio(SNR) of the receiver in real time and adjusting the channel environment. This scheme can improve the channel utilization and system throughput under the premise of limiting the system bit error rate. Furthermore,this scheme is successfully implemented in Xilinx Virtex-5 FPGA board.

关 键 词：deep SPACE communication ADAPTIVE SIGNAL-TO-NOISE ratio(SNR) estimate Consultative COMMITTEE for SPACE Data Systems (CCSDS) 

分 类 号：TN927.3[电子电信—通信与信息系统]