| 研究生: |
王琮星 Cong-Xing Wang |
|---|---|
| 論文名稱: |
進化演算法應用在多層感知迴授等化 |
| 指導教授: |
賀嘉律
Chia-Lu Ho |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
資訊電機學院 - 電機工程學系 Department of Electrical Engineering |
| 畢業學年度: | 90 |
| 語文別: | 中文 |
| 論文頁數: | 71 |
| 中文關鍵詞: | 進化演算法 |
| 外文關鍵詞: | EA |
| 相關次數: | 點閱:10 下載:0 |
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模擬類神經網路(Nerous network)的多層感知機(MLP)架構,其非線性的特性結構運用在調適性等化器(Adaptive Equalizer)上,可解決訊號空間的非線性問題。而訊號受符元干擾(ISI)和Noise的影響,等化器的運用是必要的。傳統式調適性等化器利用最小均方差演算法(Least Mean Square, LMS),而多層感知機的網路學習演算法則為倒傳遞演算法(Backpropagation algorithm, BP)。
本篇論文將探討進化演算法(Evolution algorithms ,EAs),並將之應用在多層感知機(MLP)之後遞式判別回授等化器(Decision Feedback Equalizer, DFE)上。利用進化演算法全域搜尋(global search)的特性,使等化器的效能達到更理想的狀態。EA是模擬生物基因演進的運用法則,經由交配(crossover)、突變(mutate)、選擇(selection)等程序,找出等化器最佳係數解。此論文並針對各個程序步驟做深入探討,並分析各參數值(parameter)對效能(performance)的影響,更完整建構進化演算法(EA)的設定,使EA能在運用上有更佳的效能。
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