Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 葉遠呈 | en_US |
dc.contributor.author | Yeh,Yuan-Cheng | en_US |
dc.contributor.author | 張文輝 | en_US |
dc.contributor.author | Chang,Wen-Whei | en_US |
dc.date.accessioned | 2014-12-12T01:38:24Z | - |
dc.date.available | 2014-12-12T01:38:24Z | - |
dc.date.issued | 2009 | en_US |
dc.identifier.uri | http://140.113.39.130/cdrfb3/record/nctu/#GT079713562 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/44578 | - |
dc.description.abstract | 在數位多媒體通訊系統裡,合併訊源通道編碼演算法可有效提升系統效能的強健性。本論文將針對位元及索引層級的疊代訊源通道解碼機制,探討系統傳送端兩項關鍵元件的設計。索引指定,先觀察疊代解碼過程中額外資訊相關性的實質變化,再配合二位元置換演算法以設計最佳的索引指定。至於交錯器的設計,我們從接收端的角度,提出適用於疊代訊源通道解碼的交錯器。最後經由附加性白高斯雜訊通道的系統模擬,驗證我們提出的索引指定與交錯器,有效提升了疊代解碼的效益與整體系統的強健性。 | zh_TW |
dc.description.abstract | In digital multimedia communication , iterative source-channel decoding(ISCD) has been shown effective for error robustness by exploiting both the source residual redundancy and the channel-code redundancy . This thesis investigates the encode design for use in conjunction with bit-level as well as index-level ISCD . Firstly , we compare different index assignment schemes in terms of the correlation of extrinsic information resulting form the ISCD process .Also proposed is a correlation-based index assignment scheme . Secondly , we focus on the interleaver design based on the performance of iterative decoding . Simulation results indicate that the combined use of correlation-based index assignment and interleaver can improve the error robustness for AWGN channel. | en_US |
dc.language.iso | zh_TW | en_US |
dc.subject | 疊代解碼 | zh_TW |
dc.subject | 合併訊源通道編碼 | zh_TW |
dc.subject | 索引指定 | zh_TW |
dc.subject | 交錯器 | zh_TW |
dc.subject | 疊代訊源通道解碼 | zh_TW |
dc.subject | iterative decoding | en_US |
dc.subject | ISCD | en_US |
dc.subject | iterative source-channel decoding | en_US |
dc.subject | index assignment | en_US |
dc.subject | interleaver | en_US |
dc.title | 基於額外資訊相關性的合併訊源通道編碼機制 | zh_TW |
dc.title | A Joint Source-Channel Coder Design Based on The Correlation of Extrinsic Information | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | 電信工程研究所 | zh_TW |
Appears in Collections: | Thesis |
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