一种新型数字化中频调制解调器设计

A Novel Design of Satellite Modem Based on Digital IF Technique

对新型调制解调器的总体设计进行了简要介绍,对比了零中频方案及数字化中频方案的优缺点。对数字化中频调制解调器设计方案需要重点解决问题进行了分析。详细论述了新设计中采用的关键技术及实现方法。对调制解调器性能进行了测试,结果表明误码率性能满足设计要求,体积及重量大幅降低,可有效满足便携站等小型化应用的需求。

The general design of a novel modem is briefly introduced,and the advantages and disadvantages of zero-IF and digital IF schemes are compared.The key issues have to be addressed in the design scheme of the digital IF modem are analyzed.The key technologies used in the design as well as their implementation methods are discussed in detail.The performance of the modem is tested,and the results indicate that the BER performance meets the design requirement,and the size and weight are reduced significantly,showing that the modem satisfies the requirement for miniaturization applications such as portable station,etc.