| 宽带信号数字解调在SystemView上的仿真 |
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| 引用本文： | 李瑞娥,费文晓,姚远程,韩雪梅.宽带信号数字解调在SystemView上的仿真[J].兵工自动化,2005,24(1):65-66,71. |
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| 作者姓名： | 李瑞娥 费文晓 姚远程 韩雪梅 |
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| 作者单位： | 西南科技大学,信息与控制工程学院,四川,绵阳,621002;西南科技大学,信息与控制工程学院,四川,绵阳,621002;西南科技大学,信息与控制工程学院,四川,绵阳,621002;西南科技大学,信息与控制工程学院,四川,绵阳,621002 |
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| 基金项目： | 中国工程物理研究院科技基金 |
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| 摘 要： | AM解调动态仿真系统在SystemView中建立.其发送端把原始信号频谱调制到70MHz中频的2MHz宽带信号.接收端经两次频率转换和中频采样与DDC正交数字下变频,把带宽信号解调到基带信号,得到相互正交信号.采样后的数字信号在数字域作抽样率转换,得到新的抽样,然后插值重采样,最后得到10MHz采样率.仿真结果表明数字解调中频信号能恢复出原始信号.
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| 关 键 词： | 数字解调 仿真 SystemView AM |
| 文章编号： | 1006-1576(2005)01-0065-02 |
Simulation of Wide-Band Signal Demodulating on SystemView |
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| LI Rui-e,FEI Wen-xiao,YAO Yuan-cheng,HAN Xue-mei.Simulation of Wide-Band Signal Demodulating on SystemView[J].Ordnance Industry Automation,2005,24(1):65-66,71. |
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| Authors: | LI Rui-e FEI Wen-xiao YAO Yuan-cheng HAN Xue-mei |
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| Abstract: | The dynamic simulation system of AM demodulation was built in System View. The transmitter the frequency spectrum of original signal of sending side was modulated into 2MHz broad-band signal of 70MHz intermediate-frequency. The broad-band signal demodulated into base-band signal with receiver by twice frequency conversion and down convertion of DDC orthogonal digital and got the orthogonal signals. The conversion of sampling rate of digital signal was accomplished by interpolating and re-sampling and sampling rate 10MHz was gained. The result of simulation shows that the original is recovered with intermediate-frequency signal of demodulating in digital domain. |
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| Keywords: | Digital demodulating Simulation System View AM |
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