博碩士論文 945303014 詳細資訊




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姓名 李龍德(Lung-Te Li)  查詢紙本館藏   畢業系所 通訊工程學系在職專班
論文名稱 里德-所羅門與柵狀編碼調變在WiMAX回程線路的研究
(Study of R-S code and TCM for WiMAX Back-haul)
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摘要(中) 相較於過往無線回程線路技術,微波同步數位層次能提供更好得傳輸品質與編碼效能,最主要的原因在於其採用了許多先進的技術,像可調區塊長度的編碼調變之數據機,但在此同時,高速容量的技術亦會無法提升至令人接受的地步,過往已經有許多高效率的方案是針對里德-所羅門碼及柵狀編碼調變以降低其傳輸的困難度,卻極少文獻在探討R-S編碼TCM調變的應用在無線回程線路,基於此原因,本論文中我們將針對在寬頻(WiMAX)回程線路以提出高效率的模式來RS編碼及TCM調變,除此之外,我們亦提出了一種高效率頻譜分析法來再次的節省編碼成本,實驗結果顯示,比起傳統的編碼在無線回程線路,我們所提出的應用不但可以在增加實際傳輸頻寬的同時亦能增加編碼的效能。
摘要(英) Microwave Synchronous Digital Hierarchy achieves significantly better coding performance, compared to previous microwave back-haul standard. This is because that many advanced techniques are employed in coding and modulation the modem, such as variable block sizes estimation. Therefore, the mobile board-band is unbearable. Many efficient project have been proposed for Reed-Solomon coding and Trellis-coded modulation to reduce the transmission complexity. In this thesis, we focus on Reed-Solomon coding and Trellis-coded modulation propose efficient mode decision scheme to speed up the board-band(WiMAX) back-haul. In addition, an efficient motion estimation algorithm, has been proposed to further reduce the coding cost. The experimental results show that our proposed application can increase spectral efficiency while improving the coding performance, when compared to original the back-haul coding scheme.
關鍵字(中) ★ 頻譜效能
★ 柵狀編碼調變
★ 同步數位層次
★ 無線回程線路
★ 里德-所羅門碼
關鍵字(英) ★ Synchronous Digital Hierarchy
★ Trellis-coded modulation
★ Reed-Solomon Code
★ back-haul
★ spectral efficiency
論文目次 第一章緒論
1.1 簡介..1
1.2 研究動機與目的..2
1.3 論文架構..4
第二章R-S碼與調變在數據信號處理介紹.7
2.1 編解碼簡介.7
2.1.1 在BCH 碼中的R-S 碼與其編碼介紹.8
2.1.2 在數據機之R-S 碼的編解碼規格.10
2.1.3 在數據中的調變功能介紹.13
2 回顧同步數位層次系統在回程線路效能與標準..21
2.2.1 無線回程線路的標準.22
2.2.2 以R-S 碼與調變方法的效能.24
2.3 在無線回程線路基本的效能分析.27
2.3.1 R-S 碼與迴旋碼在數位系統效能的舉例.30
2.3.2 R-S 碼在一般32Mbps 以上容量的分析.36
2.4 數據機的網路品質服務(QoS) .39
第三章在無線回程線路高速率中的R-S 碼效能分析.44
3.1 無線回程線路設備中R-S 碼的編碼架構.44
3.1.1 實驗程式分析與誤碼率計算.45
3.1.2 高速率標準與原有R-S 碼TCM 調變的效能差異...47
3.1.3 在現有對稱DS3 容量下R-S 碼與16QAM 調變數據的效能分析..50
3.2 在高速率無線回程線路對R-S 碼與TCM 調變之頻譜效能分析..53
3.2.1 在WiMAX 無線回程線路固定速率DS3 的頻譜效能比較方式..53
3.2.2 相較在WiMAX 無線回程線路固定DS3 速率效能分析..58
3.3. 在WiMAX 無線回程線路高速率以R-S 碼的編碼效能分析.44
3.3.1 在標準高速率以R-S 碼改良效能分析比較.61
3.4 在WiMAX 無線回程線路高速率100Mbps 容量之現有改良效能...67
第四章在WiMAX 無線回程線路超高速率的效能分析..71
4.1 在無線回程線路超高速率的分析方式:延遲(Latency)效應..71
4.2 在無線回程線路超高速率100~150Mbps 以R-S 碼與調變效能分析..74
4.3 在無線回程線路對稱STM1(近155Mbps) 超高速率效能分析..76
4.3.1 超高速網路容量155Mbps 探討成本分析..76
4.3.2 超高速率155Mbps 以R-S 碼與調變問題..78
4.4 在無線回路以R-S 碼對於超高速200Mbps 的效能分析..80
4.5 探討在無線回路超高速300Mbps~500Mbp 效能極限..84
4.6 探討超高速1Gbps 以下相關性研究結果..89
第五章結論與未來展望.92
5.1 結論探討..92
5.2 未來展望...93
A1. 參考文獻...95
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指導教授 林銀議(Yinyi Lin) 審核日期 2012-7-18
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