摘要
根据系统的FM调制方式,通过计算分析多普勒频移的变化规律,采用中频模拟实验的方式证明了在低端频谱远高于干扰调制频率的基础上,多普勒频移对高速列车车地通信系统的数据传输没有任何影响。
Based on the FM modulation mode of the system, by calculating and analyzing Doppler frequency change rules, using intermediate frequency simulation experiment, it is proved that since low end spectrum is far higher than disturbance modulation frequency, the Doppler effect has no effect on the data transmission of high-speed train- ground communication system.
出处
《移动通信》
2016年第12期39-42,共4页
Mobile Communications
关键词
多普勒效应
车地通信
数据传输
频率偏移
Doppler effect train-ground communication data transmission frequency offset
