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Joint Source-Channel Decoder for H.264 Coded Video Employing Fuzzy Adaptive Method

机译:采用模糊自适应方法的H.264编码视频联合源信道解码器

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The latest video compression standard H.264 is an efficient coding technique for video applications. However, H.264 video streams are sensitive to errors which occur in the transmission of data over noisy channels. In this paper, a new error concealment technique is proposed to provide error resilience based on the source decoder of H.264 and the channel decoder of LDPC. The proposed method employs the fuzzy adaptive scheme to improve the error correction capability which utilizes the extrinsic information from the channel decoder to update the log-likelihood ratio (LLR) after each iteration. Experiment results indicate that the proposed JSCD has significant improvements than other JSCD for additive white Gaussian noise (AWGN) channel.
机译:最新的视频压缩标准H.264是一种针对视频应用的有效编码技术。但是,H.264视频流对在嘈杂的信道上传输数据时出现的错误敏感。本文提出了一种新的错误隐藏技术,该技术基于H.264的源解码器和LDPC的信道解码器来提供错误恢复能力。所提出的方法采用模糊自适应方案来改善纠错能力,该纠错能力利用来自信道解码器的外部信息来在每次迭代之后更新对数似然比(LLR)。实验结果表明,所提出的JSCD在加性高斯白噪声(AWGN)信道方面比其他JSCD有显着改进。

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