Time-domain Equalization Techniques for ADSL System
碩士 === 國立暨南國際大學 === 電機工程學系 === 91 === Time-domain Equalizer (TEQ) is a necessary circuit to shorten the length of channel impulse response in discrete multi-tone (DMT) digital subscriber line (DSL) systems. From the hardware implementation point of view, a simple and practical least-square (LS) chan...
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ndltd-TW-092NCNU04420122016-06-17T04:16:59Z http://ndltd.ncl.edu.tw/handle/48802786673084425394 Time-domain Equalization Techniques for ADSL System 非對稱用戶迴路之時域等化器技術研究 Tseng Hsuan Wen 曾玄文 碩士 國立暨南國際大學 電機工程學系 91 Time-domain Equalizer (TEQ) is a necessary circuit to shorten the length of channel impulse response in discrete multi-tone (DMT) digital subscriber line (DSL) systems. From the hardware implementation point of view, a simple and practical least-square (LS) channel estimation method is employed in the thesis. The simulation results show that the performance of TEQ will be seriously degraded when channel estimation error exists. To further improve the performance of TEQ, two alternative algorithms, the G1G algorithm and the simple SSNR algorithm, are presented in the thesis. Both the two proposed algorithms use three-taps filter to replace the conventional two-tap filter in DCC algorithm. Both the proposed two methods can efficiently combat the effect of the estimation error and the achievable transmission rates are satisfied. Since the proposed two methods are iterative, computation complexity can be significantly reduced. The circuit complexity of the proposed methods is much less than the conventional MSSNR and Min-ISI algorithms. 魏學文 2004 學位論文 ; thesis 62 zh-TW |
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碩士 === 國立暨南國際大學 === 電機工程學系 === 91 === Time-domain Equalizer (TEQ) is a necessary circuit to shorten the length of channel impulse response in discrete multi-tone (DMT) digital subscriber line (DSL) systems. From the hardware implementation point of view, a simple and practical least-square (LS) channel estimation method is employed in the thesis. The simulation results show that the performance of TEQ will be seriously degraded when channel estimation error exists. To further improve the performance of TEQ, two alternative algorithms, the G1G algorithm and the simple SSNR algorithm, are presented in the thesis. Both the two proposed algorithms use three-taps filter to replace the conventional two-tap filter in DCC algorithm. Both the proposed two methods can efficiently combat the effect of the estimation error and the achievable transmission rates are satisfied. Since the proposed two methods are iterative, computation complexity can be significantly reduced. The circuit complexity of the proposed methods is much less than the conventional MSSNR and Min-ISI algorithms.
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魏學文 |
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魏學文 Tseng Hsuan Wen 曾玄文 |
author |
Tseng Hsuan Wen 曾玄文 |
spellingShingle |
Tseng Hsuan Wen 曾玄文 Time-domain Equalization Techniques for ADSL System |
author_sort |
Tseng Hsuan Wen |
title |
Time-domain Equalization Techniques for ADSL System |
title_short |
Time-domain Equalization Techniques for ADSL System |
title_full |
Time-domain Equalization Techniques for ADSL System |
title_fullStr |
Time-domain Equalization Techniques for ADSL System |
title_full_unstemmed |
Time-domain Equalization Techniques for ADSL System |
title_sort |
time-domain equalization techniques for adsl system |
publishDate |
2004 |
url |
http://ndltd.ncl.edu.tw/handle/48802786673084425394 |
work_keys_str_mv |
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