目录
课程设计评分标准........................................................................................................................................................ I
摘要 ............................................................................................................................................................................. II
1. 概述 ......................................................................................................................................................................... 1
1.1 载波调制............................................................................................................................................................ 1
1.1.1
载波调制的目的
........................................................................................................................................ 1
1.1.2
载波调制的方式
........................................................................................................................................ 1
1.2 解调方法............................................................................................................................................................ 2
1.2.1
相干解调
.................................................................................................................................................... 2
1.2.2
包络检波
.................................................................................................................................................... 2
2. DSB 调制解调原理.................................................................................................................................................. 3
2.1 DSB 调制过程.................................................................................................................................................... 3
2.2 DSB 解调过程.................................................................................................................................................... 4
2.3 DSB 相干解调性能............................................................................................................................................ 6
3. 软件仿真 ................................................................................................................................................................. 7
3.1 MATLAB 仿真 ................................................................................................................................................... 7
3.1.1 DSB
信号时域波形
..................................................................................................................................... 7
3.1.2 DSB
信号频域波形
..................................................................................................................................... 9
3.2 S
IMULINK
仿真.................................................................................................................................................. 10
3.2.1
电路图搭建
.............................................................................................................................................. 10
3.2.2
波形观察
.................................................................................................................................................. 10
4.结论 ...................................................................................................................................................................... 12
4.1 DSB 信号的特点.............................................................................................................................................. 12
4.2 相干载波的重要性.......................................................................................................................................... 12
4.3 同步检波器的优点.......................................................................................................................................... 13
5.体会总结 .............................................................................................................................................................. 13
参考资料 .................................................................................................................................................................... 14