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MATIN: A Random Network Coding Based Framework for High Quality Peer-to-Peer Live Video Streaming

机译:MATIN:用于高质量对等实时视频流的基于随机网络编码的框架

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摘要

In recent years, Random Network Coding (RNC) has emerged as a promising solution for efficient Peer-to-Peer (P2P) video multicasting over the Internet. This probably refers to this fact that RNC noticeably increases the error resiliency and throughput of the network. However, high transmission overhead arising from sending large coefficients vector as header has been the most important challenge of the RNC. Moreover, due to employing the Gauss-Jordan elimination method, considerable computational complexity can be imposed on peers in decoding the encoded blocks and checking linear dependency among the coefficients vectors. In order to address these challenges, this study introduces MATIN which is a random network coding based framework for efficient P2P video streaming. The MATIN includes a novel coefficients matrix generation method so that there is no linear dependency in the generated coefficients matrix. Using the proposed framework, each peer encapsulates one instead of n coefficients entries into the generated encoded packet which results in very low transmission overhead. It is also possible to obtain the inverted coefficients matrix using a bit number of simple arithmetic operations. In this regard, peers sustain very low computational complexities. As a result, the MATIN permits random network coding to be more efficient in P2P video streaming systems. The results obtained from simulation using OMNET++ show that it substantially outperforms the RNC which uses the Gauss-Jordan elimination method by providing better video quality on peers in terms of the four important performance metrics including video distortion, dependency distortion, End-to-End delay and Initial Startup delay.
机译:近年来,随机网络编码(RNC)成为一种有前途的解决方案,用于在Internet上进行有效的对等(P2P)视频多播。这可能是由于RNC显着提高了网络的错误恢复能力和吞吐量这一事实。但是,由于发送大系数向量作为报头而产生的高传输开销一直是RNC面临的最重要挑战。此外,由于采用了高斯-乔丹消除法,在对编码块进行解码和检查系数矢量之间的线性相关性时,对等体可能会施加相当大的计算复杂性。为了解决这些挑战,本研究介绍了MATIN,它是一种基于随机网络编码的框架,可实现高效的P2P视频流。 MATIN包含一种新颖的系数矩阵生成方法,因此在生成的系数矩阵中不存在线性相关性。使用提出的框架,每个对等方将一个系数条目而不是n个系数条目封装到生成的编码数据包中,这将导致非常低的传输开销。也可以使用位数的简单算术运算来获得逆系数矩阵。在这方面,同伴维持非常低的计算复杂度。结果,MATIN允许随机网络编码在P2P视频流系统中更加有效。使用OMNET ++仿真获得的结果表明,它通过在四个重要性能指标(包括视频失真,依赖性失真,端到端延迟)方面为同级提供更好的视频质量,大大优于使用高斯-乔丹消除法的RNC。和初始启动延迟。

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