標題: | 適用於可調式視訊編碼的多點傳播技術上的無比率非均等抹除碼之編碼技術 Rateless Unequal Erasure Protection Coding Techniques Using on H.264/SVC Video Multicasting |
作者: | 沈子晉 Shen, Tzu-Ching 邵家健 王忠炫 Zao, Kar-Kin Wang, C.-H. 網路工程研究所 |
關鍵字: | 非均等抹除碼;通道編碼;可調式;視訊傳播;UEP;Rateless;SVC;channel code |
公開日期: | 2009 |
摘要: | 我們的目的在於建立一套用在可調式視訊編碼的多點傳播技術上的編碼機制,因為目前的研究大多沒有提供具體的方法,說明如何實作出一套極短長度無比例特性之非均等抹除碼的編碼系統,並且具有 (一)極佳的非均等保護能力以及良好的改錯能力 (二) 可調整不同層次保護程度的能力 (三) 可調整不同保護能力所佔有的訊息量比例 (四) 可以實際應用在可調式視訊編碼的多點傳輸上。
我們的編碼機制的組成包含了一個非均等前置的線性編碼器,一個交錯/多工器、和一個非均等無比例後置編碼器,並且清楚地描述如何最佳化以及各部分的參數要如何調整搭配來達成我們的目標。 In this thesis, we propose a rateless cascade channel coding system with Unequal Erasure Protection capability using on H.264/SVC transport for real time transport because so far most of researches does not provide a specific method about how to design a short-length rateless unequal erasure protection code which is (1) with good UEP capability and graceful degradation (2) each UEP layer size is adjustable (3) protection capability for each UEP layer is adjustable (4) the coding system is practical to use on a real H.264/SVC transport. The coding scheme we provide in this thesis is composed by an UEP Precoder, Interleaver/Multiplexer, and an UEP rateless Postcoder, and we also describe how to design, adjust parameters to optimize performance of them. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT079756518 http://hdl.handle.net/11536/46009 |
Appears in Collections: | Thesis |
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