基于高速数传率时的卫星通信调制体制的设计

The Design of Modulation in High Data Rate Satellite Communication

本文结合卫星通信的特点 ,综合考虑高速数传系统的特殊要求 ,比较了数字或模拟调制的优缺点 ,对几种常见的调制方式分别从功率利用率、频带利用率、实现复杂度等方面进行了比较 ,得出较为适合的调制方式。最后 。

This paper compared the modulation methods used in the satellite high data rate communication.Discussed the problem that whether the digital modulation or the analog modulation should be chosen.In the end introduced the OFDM theory and list the disadvantages and virtue when it was used in the satellite high data rate communication.