视频失真优化的协作式无线网络编码机制

计算机科学 ›› 2014, Vol. 41 ›› Issue (Z6): 306-311.

视频失真优化的协作式无线网络编码机制

狄海阳,白光伟,沈航

南京工业大学计算机科学与技术系南京211816;南京工业大学计算机科学与技术系南京211816;南京邮电大学宽带无线通信与传感网技术教育部重点实验室南京210009;南京理工大学高维信息智能感知与系统教育部重点实验室南京210094;南京理工大学高维信息智能感知与系统教育部重点实验室南京210094

出版日期:2018-11-14 发布日期:2018-11-14
基金资助:
本文受国家自然科学基金项目(60673185,7),江苏省自然科学基金项目(BK2010548),江苏省科技支撑计划(工业)项目(BE2011186),南京邮电大学宽带无线通信与传感网技术教育部重点实验室开放研究基金课题(NYKL201304),江苏省普通高校研究生科研创新计划项目(CXLX13_414)资助

Video-distortion Optimized Cooperative Wireless Network Coding

DI Hai-yang,BAI Guang-wei and SHEN Hang

Online:2018-11-14 Published:2018-11-14

摘要/Abstract

摘要： 网络编码技术能够显著提高无线多跳网络的吞吐量。当支持视频传输时,合理的网络编码选择对于提高视频质量具有极其重要的作用。首先提出一种效率优化的网络编码机制(ENC),并在此基础上,针对视频传输的特点,兼顾速率与失真率,提出基于速率控制的效率优化网络编码机制(ENC-RaDio),该机制利用拉格朗日乘子法选择期望传输速率下失真率最小的包发送,以便提高视频的传输质量。仿真实验表明,与典型的丢包感知网络编码协议相比,ENC-RaDio机制能够显著提高视频序列的可解码帧率和吞吐量。

关键词: 速率控制,网络编码,吞吐量,视频质量中图法分类号TP393文献标识码A

Abstract: Network coding can greatly improve the network throughput．Especially,an appropriate network codes selection strategy is great important to enhance quality in video transmission．This paper proposes an efficient network coding scheme (ENC)．On this basis,considering the characteristics of video transmission,we propose an efficiency optimized network coding scheme based on rate control (ENC-RaDio),using Lagrange multiplier method to choose those coded packets,such that we can achieve a lower distortion for video transmission．Our simulation results demonstrate that,compared with typical loss-aware network coding schemes,ENC-RaDio achieves significant performance improvement in terms of decodable frame ratio and throughput.

Key words: Rate control,Network coding,Throughput,Video quality

狄海阳,白光伟,沈航. 视频失真优化的协作式无线网络编码机制[J]. 计算机科学, 2014, 41(Z6): 306-311. https://doi.org/

DI Hai-yang,BAI Guang-wei and SHEN Hang. Video-distortion Optimized Cooperative Wireless Network Coding[J]. Computer Science, 2014, 41(Z6): 306-311. https://doi.org/

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