喷泉码在P2P流媒体中的应用研究  

Research on Fountain Code Application for P2P Streaming

作　　者：魏辰宇 王超 

机构地区：[1]河南省郑州市第九中学,河南郑州450002 [2]中国船舶重工集团公司第713研究所,河南郑州450015

出　　处：《信息通信》2018年第2期150-152,共3页Information & Communications

基　　金：手机视频直播系统QoE/QoS关键问题研究(61379079)

摘　　要：针对P2P流媒体应用中数据分发调度算法复杂的问题,文章提出使用基于Ratpor码的信道编码技术来保证稳定的视频流服务。通过实验实现P2P流媒体中Raptor码的编解码过程,并对Raptor码的基本参数进行评估,使其在吞吐量、计算复杂度和灵活性中达到最佳平衡,采用Raptor码之后视频播放速度最大达到25-30Mbit/s,并且接收端在多接收9个纠删符号后,成功解码的概率达到99%。Aim at the problem that in P2 P streaming applications the scheduling algorithm of data distribution is complex, the paper proposes channel coding technology to ensure stable video service based on Raptor code. It achieves the encoding and decoding of Raptor codes through experiment, evaluates the basic parameters of Raptor codes to achieve the best balance between throughput, the computational complexity and flexibility of fountain codes.After using Raptor code video playback speed up to 25-30 Mbit/s, and the receiver to receive more than nine deleted symbols, the success of the probability of decoding to reach 99%.

关 键 词：P2P流媒体 喷泉码 RAPTOR码 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]