低功耗数字化调制解调平台的设计与实现

Design and Implementation of Low Power Digital Modulation-Demodulation Platform

针对卫星通信信道设备低功耗和数字化的需求,提出一种低功耗、数字化卫星调制解调平台的设计方法。前端通过AD9364完成模拟信号和数字信号的转换,后端采用大规模FPGA进行数字信号处理。测试结果表明,该调制解调平台通过加载不同的软件,可实现数据速率可变、调制解调方式可变、多种编译码方式、扩展L频段(950～2 150 MHz),大幅度降低了平台的体积和功耗,可作为一个成熟平台应用于卫星通信终端或便携站的产品设计中。

For the low power consumption and digital demand of satellite communication equipment,a design of low power digital satellite modulation-demodulation platform is proposed.The front end uses AD9364 to complete the transformation between analog signal and digital signal,and the back end adopts large-scale FPGA to perform digital signal processing.The test result shows that,by loading different software,the design of the modulation-demodulation platform can realize variable data rate,variable modulation and demodulation mode,expanded L band,and greatly reduce the platform size and power consumption,which can be used as a mature platform for the design of satellite communication terminal or portable station products.