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| 宽带QAM波形解调的关键技术研究 | |
| 引用本文： | 关建新,刘建新,胡华. 宽带QAM波形解调的关键技术研究[J]. 舰船电子工程, 2010, 30(2): 92-96 |
| 作者姓名： | 关建新 刘建新 胡华 |
| 作者单位： | 1. 海军工程大学电子工程学院,武汉,430033 2. 中国人民解放军92823部队,三亚,572021 3. 中国人民解放军91982部队,三亚,572021 |
| 基金项目： | 海军工程大学科研基金项目 |
| 摘 要： | QAM调制是一种频谱效率很高的数字调制方式，在诸如数字微波通信及卫星通信等领域被广泛应用。但由于信道的影响，在接收端对其进行解调非常困难。在介绍QAM调制解调原理的基础上，分析了宽带QAM波形解调时需要考虑的问题，并对其中涉及的定时同步、载波恢复以及均衡等关键技术做了详细的分析和研究。 |
| 关 键 词： | QAM 解调 定时同步 载波恢复 均衡 |
Research on the Key Technique of Demodulating the Broadband QAM Waveform |
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| Guan Jianxin,Liu Jianxin,Hu Hua. Research on the Key Technique of Demodulating the Broadband QAM Waveform[J]. Ship Electronic Engineering, 2010, 30(2): 92-96 | |
| Authors: | Guan Jianxin Liu Jianxin Hu Hua |
| Affiliation: | (Naval University of Engineering, Electronic Engineering College , Wuhan 430033;No. 92823 Troops of PLA , Sanya 572021;No. 91982 Troops of PLA , Sanya 572021) |
| Abstract: | The Quadrature Amplitude Modulation （QAM） is a digital modulation technique which has high spectrum dficiency and is widely used in digital microwave communication and satellite communication. But it is difficult to demodulate the broadband QAM waveform because of the influence of the channel. Based on the introduction of the principle of QAM modulation, the problems which should be considered are analyzed when we demodulate the broadband QAM waveform. The involved key techniques such as timing synchronization, carrier recovery and equalization are detailed analyzed and researched. |
| Keywords: | QAM |
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