| MQAM原理及其在EDSL系统中的应用 |
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| 引用本文： | 陈德锋,李欣. MQAM原理及其在EDSL系统中的应用[J]. 铁路计算机应用, 2006, 15(12): 48-50 |
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| 作者姓名： | 陈德锋 李欣 |
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| 作者单位： | 中国海洋大学,电子工程系,青岛,266071 |
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| 摘 要： | 概述多电平正交振幅调制(MQAM)调制解调的一般原理,介绍一种能有效提高频谱利用率的变速率调制技术,并论述它在EDSL系统中的具体应用.通过比较QAM和DMT两种方案,说明EDSL系统采用QAM技术的原因.
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| 关 键 词： | 变速率 多电平正交振幅调制 星座图 以太数字用户线 调制解调 |
| 文章编号： | 1005-8451(2006)12-0048-03 |
| 收稿时间： | 2006-06-21 |
| 修稿时间： | 2006-06-21 |
MQAM principle and its application in EDSL System |
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| CHEN De-feng,LI Xin. MQAM principle and its application in EDSL System[J]. Railway Computer Application, 2006, 15(12): 48-50 |
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| Authors: | CHEN De-feng LI Xin |
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| Affiliation: | Electronic Engineering Department, Ocean University Of China, Qingdao 266071, China |
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| Abstract: | The principle of MQAM modulation and demodulation was outlined,and variable rate QAM,which could improve the spectral efficiency distinctly,was introduced in detail,its particular application in EDSL System was also discussed in this paper.In addition,it was compared the QAM and DMT,and the advantages of QAM technology,explained its application in EDSL System. |
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| Keywords: | variable rate MQAM constellation EDSL modulation and demodulation |
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