| 基于多相滤波的PCM/FM正交解调 |
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| 引用本文： | 杨小华,姚远程. 基于多相滤波的PCM/FM正交解调[J]. 通信技术, 2011, 0(11): 1-3 |
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| 作者姓名： | 杨小华 姚远程 |
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| 作者单位： | 西南科技大学信息工程学院; |
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| 基金项目： | 国家自然科学基金和NASF联合基金资助:基于软件无线电的中频数字化接收机技术研究(NO.10876035) |
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| 摘 要： | 传统的相干正交解调方法,需要提取同频同相的载波,从而增加了解调的难度。根据遥测系统脉冲编码调制/调频（PCM/FM,Pulse Code Modulation-Frequency Modulation）信号的特点,采用基于多相滤波的解调方法。该方法通过多相滤波的方式来实现正交变换,不需要在接收端恢复同频同相的载波,从而降低了传统解调方法中电路实现的难度。通过MATLAB对信号进行调制解调的仿真,比较了不同解调方法对信号的解调效果,并在表格中显示了解调的误码率数据,从而验证了该方法的可行性和优越性。
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| 关 键 词： | 正交解调 多相滤波 脉冲编码调制/调频 遥测系统 |
PCM/FM Quadrature Demodulation based on Poly-phase Filter |
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| YANG Xiao-hua,YAO Yuan-cheng. PCM/FM Quadrature Demodulation based on Poly-phase Filter[J]. Communications Technology, 2011, 0(11): 1-3 |
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| Authors: | YANG Xiao-hua YAO Yuan-cheng |
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| Affiliation: | YANG Xiao-hua,YAO Yuan-cheng (School of Information Engineering,Southwest University of Science and Technology,Mian Yang,Sichuan,621010,China) |
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| Abstract: | The traditional coherent orthogonal demodulation method requires the extraction of carrier signal with the same frequency and phase,thus increasing the demodulation difficulty.According to the characteristics of PCM/FM radio signal in telemetry system,the demodulation method based on Poly-phase filter orthogonal transform technique is adopted.This method,by the multiphase filtering method,realizes orthogonal transformation and requires no recovery of the carrier signal in the receiver,thus reducing the circ... |
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| Keywords: | quadrature demodulation poly-phase filter PCM/FM telemetry system |
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