| QAM调制与解调的全数字实现 |
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| 引用本文： | 于风云,张平.QAM调制与解调的全数字实现[J].现代电子技术,2005,28(3):53-55. |
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| 作者姓名： | 于风云 张平 |
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| 作者单位： | 西安电子科技大学,机电工程学院,陕西,西安,710071 |
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| 摘 要： | 论述了适用于数字微波系统的全数字正交幅度调制解调方式，并根据星座图的形状指出了16QAM。64QAM(星座图为矩形)与32QAM，128QAM(星座图为十字形)在调制与解调方法上的区别，最后用ADS(Advanced Design System)对16QAM，32QAM，64QAM，128QAM全数字调制与解调过程进行仿真，并给出了64QAM在加性高斯白噪声条件下的误码率。实验证明，全数字正交幅度调制解调易于实现，且性能良好。
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| 关 键 词： | QAM 调制解调 星座图 误码率 |
| 文章编号： | 1004-373X(2005)03-053-03 |
| 修稿时间： | 2004年9月23日 |
All-digitized Implementation of QAM Modulation and Demodulation |
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| YU Fengyun,ZHANG Ping.All-digitized Implementation of QAM Modulation and Demodulation[J].Modern Electronic Technique,2005,28(3):53-55. |
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| Authors: | YU Fengyun ZHANG Ping |
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| Abstract: | The paper deals with alldigitized modulation and demodulation that applys to digital microwave system,and points out differences in means of modulation and demodulation between 16QAM, 64QAM and 32QAM,128QAM according to the shape of constellation.We emulate the procession of alldigitized modulation and demodulation of 16QAM,32QAM,64QAM,128QAM. At last, the paper shows BER of 64QAM with Additive Gauss White Noises. The experiments shows that all digital QAM modulation and demodulation is easily implemented and has good capabilities. |
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| Keywords: | QAM modulation and demodulation constellation BER |
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