標題: Integrating Non-Repetitive LT Encoders With Modified Distribution to Achieve Unequal Erasure Protection
作者: Yen, Kuo-Kuang
Liao, Yen-Chin
Chen, Chih-Lung
Zao, John K.
Chang, Hsie-Chia
資訊工程學系
電子工程學系及電子研究所
Department of Computer Science
Department of Electronics Engineering and Institute of Electronics
關鍵字: BP decoding;LT code;degree;non-repetitive encoding
公開日期: 1-十二月-2013
摘要: The performance of LT code is highly related to the code length. A decoder is more likely to deplete degree-1 encoding symbols and terminate during early stage when the code length is short. In this work, we modify the robust Soliton distribution (RSD) and increase the degree-1 proportion. More degree-1 encoding symbols can be generated to relieve early decoding termination. The proportion of low degrees, except for degree-1, is also reduced. Therefore, receivers collect less encoding symbols carrying redundant information. In addition, Non-Repetitive (NR) encoding scheme is proposed to avoid producing repeated degree-1 encoding symbols. To improve video transmission quality, previous studies redesign LT codes to provide Unequal Error Protection (UEP) for different Scalable Video Coding (SVC) layers. Unlike those studies to modify the code structure, we integrate multiple NR encoders to achieve UEP ability. Experimental results show that our UEP scheme outperforms previous studies in terms of the PSNR.
URI: http://dx.doi.org/10.1109/TMM.2013.2269898
http://hdl.handle.net/11536/23232
ISSN: 1520-9210
DOI: 10.1109/TMM.2013.2269898
期刊: IEEE TRANSACTIONS ON MULTIMEDIA
Volume: 15
Issue: 8
起始頁: 2162
結束頁: 2175
顯示於類別:期刊論文


文件中的檔案:

  1. 000327393900035.pdf

若為 zip 檔案,請下載檔案解壓縮後,用瀏覽器開啟資料夾中的 index.html 瀏覽全文。