| 一种适用于空间应用的高速调制系统的设计和实现 |
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| 引用本文： | 林苗,王平连,张磊.一种适用于空间应用的高速调制系统的设计和实现[J].空间科学学报,2010,30(2). |
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| 作者姓名： | 林苗 王平连 张磊 |
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| 作者单位： | 1. 中国科学院光电研究院,北京,100190;中国科学院研究生院
2. 中国科学院光电研究院,北京,100190 |
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| 摘 要： | 为了适应空间科学技术的发展,满足空间科学应用系统的数据传输速率、多进制数字调制方式以及实现调制体制灵活性的要求,提出了一种适用于空间应用的高速调制系统的设计与实现方案.该方案采用了基于FPGA和DAC的通信调制技术,可在硬件设计不变的情况下,实现QPSK,8PSK和16QAM等多种调制方式下的高速数据传输.分析了高速调制在硬件实现上的技术难点,解决了高频率高精度同步时钟生成、高速数据转换、宽带调制等技术问题.实测表明,在载频为2 GHz时,该调制系统在8PSK调制下速率可达750 Mbit/s,且调制信号的矢量幅度误差(EVM)仅为3.3%.
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| 关 键 词： | 高速数传 多进制数字调制方式 8 PSK |
Design and Implementation of a High Speed Modulation System for Space Applications |
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| LIN Miao,WANG Pinglian,ZHANG Lei.Design and Implementation of a High Speed Modulation System for Space Applications[J].Chinese Journal of Space Science,2010,30(2). |
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| Authors: | LIN Miao WANG Pinglian ZHANG Lei |
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| Affiliation: | 1/a>;2;Academy of Opto-Electronics/a>;Chinese Academy of Sciences/a>;Beijing 100190;Graduate University of Chinese Academy of Sciences |
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| Abstract: | To meet the requirements of high speed data transmission,multi-level modulation and the system flexibility in space applications,a modulation system design scheme was introduced,which has adopted the new techniques of the FPGA and DAC based communication system,and can be used for high speed data transmission with QPSK,8PSK,QAM or other kinds of digital modalation. The difficulties such as the high speed based-band signal conversion,wide-band modulation,carrier suppression,high frequency and high precision ... |
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| Keywords: | High speed data transmission Multi-level modulation 8 PSK |
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