多模式卫星接收机的载波同步方案设计与实现

Design and Implement of Carrier Recovery Scheme in Multi-mode Satellite Receiver

本文针对多模式卫星接收机的载波同步方案进行了一体化设计并进行了硬件实现验证。首先对载波同步基本模型进行了分析,然后结合多模式接收机的实际应用,提出了一种新的载波同步实现方案,并对该方案应用FPGA进行硬件实现,给出了详细的实现电路和结果。该同步实现方案能够适应于多种调制方式、可变符号速率等,并且实现简单,能够满足通常系统的性能要求。

This paper proposed a new incorporated carrier recovery algorithm in multi -mode satel- lite communication terminals. The paper first analyzed the model of carrier recovery, then brought out a new implementing scheme used in multi - model terminals, and implemented it in hardware with FPGA, detailed circuits and results were also presented. The scheme is not only fit for rate - varying software - defined terminals with several modulating ways, but also has an advantage of sim- ple structure. Both experiments and simulations results show that the scheme has good performance which can meet the needs of normal systems.