无线信道的自适应视频质量保障技术研究  

Adaptive Video Quality Assurance Technology Research Based on Wireless Channel

作　　者：许起明[1] 余翔[1] 徐宇明[1] 

机构地区：[1]重庆邮电大学,重庆400065

出　　处：《电视技术》2014年第7期168-173,共6页Video Engineering

基　　金：国家新一代宽带无线移动通信网科技重大专项(2012ZX03006002003)

摘　　要：根据无线信道的质量变化提出一种基于达芬奇技术平台上H.264视频编码库的动态参数优化配置方案,实现了无线信道自适应的实时动态视频质量的保障。详细介绍了无线视频传输系统的编码器端软件平台搭建过程,重点介绍了H.264编码库的参数意义及其优化配置。最后在达芬奇技术平台TMS320DM3730上得以实现,通过对WCDMA无线信道的测试验证该方案设计的有效性和可靠性。In this paper,according to the quality change of wireless channel ,a dynamic parameter optimization scheme is proposed based on the H. 264 video encoding library of Davinci technology platform,and the adaptive real-time dynamic video quality of wireless channel is realized. After a detailed introduction of the software platform building process of encoder end in wireless video transmission system, the significance and optimal configuration of the parameters in H. 264 encoding library are focused on. Finally, this scheme is realized in the TMS320DM3730 ,which is one kind of Davinci platform. This scheme＇ s effectiveness and reliability is verified through the WCDMA wireless channel test.

关 键 词：无线信道 达芬奇技术 自适应 TMS320DM3730 优化配置 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]