WiMAX環境下基於傳輸速率最佳化之可適性視訊編碼傳輸品質增進

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：6

、訪客IP：3.143.244.6

姓名

陳冠宇(Kuan-yu Chen) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

WiMAX環境下基於傳輸速率最佳化之可適性視訊編碼傳輸品質增進
(SVC Video Quality Improvement Based on Optimized Transmission Rate over WiMAX)

相關論文

★ UHF頻段RFID彈藥管理系統之設計、實作與評估	★ 移動物偵測與追蹤之IP Camera系統
★ SDN自適應性自動化網路安全之研究	★ Wi-Fi Direct Service 應用於IoT
★ 射頻前端電路應用於載波聚合長期演進技術	★ 3C無線充電裝置運用在車載系統所產生之EMI輻射
★ 基於LoRa技術的物聯網前端防盜警示感測裝置實作與評估	★ DOCSIS 3.1 效能研究與下行通道干擾阻隔之設計
★ 藍芽無線光學投影翻譯筆	★ 手持裝置應用於MIMO ( 8x8 ) Wi-Fi系統之設計
★ 基於無伺服器運算之智慧農業雲端系統設計與研究	★ 嵌入式系統實現電梯物聯網
★ 在802.11 Ad-Hoc網路中基於速率考量之路由協定設計	★ 合作博弈與灰色模糊方法改善無線網路之性能
★ 採用拍賣策略之動態分散式方法於減少叢集小型基地台間干擾之研究	★ 在LTE-A下聚合未授權頻譜及動態分配資源以優化系統效能

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

可適性視訊編碼(Scalable Video Coding；SVC)為H.264/AVC 影像編碼技術的延伸，除了原本H.264/AVC 的低位元輸出率、高抗錯性及網路友善性的優點，還加入了分層編碼的概念，提供了三種可調性：時間、空間及訊噪比可調性，可以依據網路的狀況和用戶端的裝置動態調整至至最適當的bitstream。
即使SVC 有分層的概念，但當SVC 在無線的環境傳輸時，因為無線的環境下頻寬的資源有限，且通道變化大，因為SVC 分層的特性使得每一層的碼率及重要性皆不相同，若在傳輸每一個Layer 皆採用相同的實體層設定，則較無法充份利用SVC 之特性進行傳輸。
因此，本文要探討的範圍在IEEE 802.16e Mobile WiMAX 的環境下，基於SVC 各層採用不同的實體層設定，如何針對訊噪比、傳輸速率及誤碼率之間選擇最適合該層的調變與編碼環境。

摘要(英)

The Scalable Video Coding (SVC) is an extension of H.264/AVC. In addition to the advantage of original H.264/AVC with output of the low bit rate,high resistance of fault and network friendliness, it also owns the concept of layered coding, and offers three scalability: temporal, spatial and SNR which can be based on network conditions and client devices to dynamically adjust to the most appropriate bitstream.
When the SVC transmitting in the wireless environment,because the bandwidth of the wireless environment is limited, and channel condition changes, the layered coding makes the SVC bit-rate and the importance of each layer are not the same if each layer in the transmission has the same PHY configuration. It is unable to take full advantage of the characteristics of SVC
transmission. Here, we propose a mechanism based on ILA that lets PHY Layer configuration for each SVC layer to optimizing the transmission rate for each SVC layer.

關鍵字(中)

★ 可適性視訊編碼

關鍵字(英)

★ Scalable Video Coding

論文目次

摘要 ........................................................................................................................................ Ⅰ
Abstract ................................................................................................................................. Ⅱ
誌謝 ........................................................................................................................................ Ⅲ
目錄 ........................................................................................................................................ Ⅳ
圖目錄 ................................................................................................................................... Ⅵ
表目錄 ................................................................................................................................... Ⅷ
第一章序論 ........................................................................................................................ 1
1.1 前言 ....................................................................................................................... 1
1.2 研究動機 .............................................................................................................. 2
1.3 論文架構 .............................................................................................................. 2
第二章相關背景及研究 ................................................................................................. 4
2.1 H.264/SVC .............................................................................................................. 4
2.1.1 視訊編碼層(Video Coding Layer) ....................................................... 7
2.1.2 網路提取層(Network Abstraction Layer) ......................................... 8
2.1.3 NAL unit ..................................................................................................... 11
2.1.4 時間可調性(Temporal Scalability) .................................................. 13
2.1.5 空間可調性(Spatial Scalability) ....................................................... 14
2.1.6 訊噪比可調性(SNR Scalability) ...................................................... 14
2.2 802.16e Mobile WiMAX.................................................................................. 15
2.2.1 實體層 ....................................................................................................... 15
2.2.2 可適性調變及編碼 ................................................................................ 16
2.2.3 ARQ ............................................................................................................. 17
第三章 SVC 傳輸速率最佳化之策略 ..................................................................... 19
3.1 Bit Extraction Process .................................................................................... 19
3.2 Transmission SVC over WiMAX ............................................................... 20
3.2.1 Intelligent Link Adaptation .................................................................... 22
3.2.2 在傳輸容量限制下得到最佳影像品質 ............................................ 23
3.3 Intelligent Link Adaptation Plus ..................................................................... 24
3.3.1 Dynamic Modulation Selection ............................................................ 26
3.3.2 影像品質的增進 ...................................................................................... 28
第四章模擬數據與討論 .............................................................................................. 30
5.1 模擬環境參數 ................................................................................................. 30
5.2 實驗數據與分析 ............................................................................................. 32
第五章結論 ..................................................................................................................... 38
參考文獻 .............................................................................................................................. 39

參考文獻

[1] H. Schwarz, D. Marpe, and T. Wiegand, “Overview of the
scalable H.264/MPEG4-AVC extension,” in Proc. IEEE ICIP,
Oct. 2006, pp.161–164.
[2] Iain E G Richardson, “”H.264 and MPEG-4 Video Compression:Video Coding for Next Generation Multimedia,” John Wiley & Sons, 2003
[3] ITU-T and ISO/IEC JTC 1, “Advanced Video Coding for
Generic Audiovisual Services, ”ITU-T Recommendation H.264
and ISO/IEC 1449610 (MPEG-4 AVC),Version 8 (including
SVC extension):Consented in July 2007.
[4] WENGER Stephan, WANG Ye-kui and HANNUKSELA Miska
M., “RTP payload format for H.264/SVC scalable video coding,”Journal of Zhejiang University SCIENCE A, 2006 7(5):657-667
[5] JR Ohm, “Advances in Scalable Video Coding,” Proceedings of the IEEE, Vol.93, No.1, pp.42-56, Jan.2005”
[6] Jeffrey G. Andrews, Arunabha Ghosh, Rias Muhamed, “Fundamentals of WiMAX: understanding broadband wireless networking,” ISBN 0-13-222552-2,Pwarson Education,Inc.,2007
[7] Y. Pourmohammadi-Fallah, H. Mansour, S. Khan, P. Nasiopoulos, and H. Alnuweiri, “A Link Adaptation Technique
for Efficient Transmission of H.264 Scalable Video Over
MultirateWLANs,” IEEE Transactions on Circuits and Systems
for Video Technology, vol. 18, no. 7, pp. 875–887, July 2008.
[8] IEEE 802.16 Working Group, “IEEE Standard for Local and
Metropolitan Area Networks–Part 16: Air Interface for Fixed
Broadband Wireless Access Systems, Amendment 2: Physical
and Medium Access Control Layers for Combined Fixed and
Mobile Operation in Licensed Bands,” IEEE Std. 802.16e-2006,Feb 2006.
[9] Mai Tran, George Zaggoulos, Andrew Nix, and Angela Doufexi.Mobile WiMAX: Performance Analysis and comparison with experimental results. In Proc. IEEE VTC, pages 1–5, September2008. 52
[10] Text of ISO/IEC 14496-4:2001/PDAM 19 Reference Software for SVC, Joint Video Team (JVT) of ISO-IEC MPEG & ITU-T VCEG, N9195,Sep. 2007.
[11] I. Amonou, N. Cammas, S. Kervadec, and S. Pateux, “Optimized rate-distortion extraction with quality layers,” IEEE Trans. Circuits Syst.Video Technol., vol. 17, no. 9, pp. 1186–1193, Sep.2007

指導教授

吳中實(Jung-shyr Wu)

審核日期

2011-7-26

推文