摘要
在简述了Ka-波段星-地链路雨衰的特点及诸多抗雨衰对策的基础上,选取了两种常用的调制方式:MQAM(M维正交幅度调制)和MPSK(M维载波相位调制)分别进行研究比较,以获得不同的衰耗门限和雨衰条件下的相对较好的调制方式适应抗雨衰的要求。
Based on the introduction of the characteristic of ka-band satellite-earth links rain fading and the countermeasures against rain fading,two modulation methods of MQAM and MPSK are selected for researching and compared,so that to obtain better modulating way to fit the request against rain fading in the condition of difference fade threshold and rain fading.
出处
《山西电子技术》
2010年第5期59-61,共3页
Shanxi Electronic Technology
关键词
抗雨衰对策
自适应调制
MQAM
MPSK
countermeasures against rain fading
adaptive modulation manner
MQAM
MPSK
