| DMT-ADSL系统的自适应均衡 |
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| 引用本文： | 石文孝,迟学芬,刘长捷.DMT-ADSL系统的自适应均衡[J].吉林大学学报(理学版),2001(3):63-66. |
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| 作者姓名： | 石文孝 迟学芬 刘长捷 |
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| 作者单位： | 1. 吉林大学通信工程与技术学院,
2. 空军第二航空学院, |
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| 基金项目： | 信息产业部重点科技发展计划项目基金 (批准号 :970 65 ) |
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| 摘 要： | 提出一种基于离散多频音调制非对称数字用户线 ( DMT-ADSL )系统的时域均衡器( TEQ) ,其 SNR在任意带宽占用情况下都为最大 .在时域和频域中实现这种自适应 TEQ的算法 .用计算机仿真比较了时域算法与频域算法的收敛性 .结果表明 ,两种算法收敛速度比较满意 ,并且频域算法有更快的收敛速度和更小的均方误差 ( MSE)偏差 .
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| 关 键 词： | 自适应均衡 离散多频音调制 数字用户线 |
| 文章编号： | 0529-0279(2001)03-0063-04 |
| 修稿时间： | 2000年11月7日 |
Adaptive Equalization for DMT-ADSL Systems |
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| SHI Wen xiao,CHI Xue fen.Adaptive Equalization for DMT-ADSL Systems[J].Journal of Jilin University: Sci Ed,2001(3):63-66. |
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| Authors: | SHI Wen xiao CHI Xue fen |
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| Abstract: | A new time domain equalizer in DMT ADSL is proposed in this paper. It is shown that the new TEQ maximizes the SNR regardless of bandwidth occupancy. Two adaptation algorithms were developed in the time and frequency domains. The astringency of the time domain algorithm was compared with that of frequency domain algorithm by the computer simulation. It is shown from the simulation that the two algorithms converge at a satisfactory speed and the frequency domain algorithm offers a slightly faster convergence and a smaller excess mean square error. |
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| Keywords: | adaptive equalizer discrete multitone modulation digital subscriber line |
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