基于异构多核的超高清视频无线传输方法  

Wireless transmission method of 4K UHD based on heterogeneous multi-core

作　　者：张铭 张志刚 文勇军[1,2] 宾峰 唐立军[1,2] ZHANG Ming;ZHANG Zhi-gang;WEN Yong-jun;BIN Feng;TANG Li-jun(School of Physics&Electronic Science,Changsha University of Science&Technology,Changsha 410114,China;Key Laboratory of Electromagnetic Environment Monitoring&Modeling in Hunan Province,Changsha 410114,China)

机构地区：[1]长沙理工大学物理与电子科学学院,湖南长沙410114 [2]近地空间电磁环境监测与建模湖南省普通高校重点实验室,湖南长沙410114

出　　处：《湘潭大学学报（自然科学版）》2021年第1期67-78,共12页Journal of Xiangtan University(Natural Science Edition)

基　　金：湖南省重点研发计划项目(2018GK2054);长沙理工大学研究生校级创新项目(CX2019SS);湖南省水利科技项目(XSKJ2019081-44)。

摘　　要：针对4K超高清视频无线传输中压缩率低,数据存储成本高以及信道抗干扰能力弱等问题,提出基于异构多核的超高清视频无线传输方法.该方法使用ARM+FPGA异构多核架构,将四核Cortex-A53 APU、双核Cortex-R5 RPU及定制FPGA集成.由ARM执行多项任务处理与控制,借助FPGA强大的并行处理能力,实现硬件层次上编解码及通信算法的加速,根据HEVC编解码和COFDM调制解调原理,研究相关算法,完成超高清视频传输系列IP核的设计.根据该方法搭建了一个4K超高清视频无线传输系统,采用每秒60帧4K分辨率(3840像素×2160像素)的视频进行无线传输实验,结果表明:接收视频图像播放正常,视频压缩率达6.19%,延时低至350 ms,4K超高清视频无线传输效果好.Aiming at the problems of low compression ratio,high cost of data storage and weak anti-jamming capability in the wireless transmission of 4K UHD video,a heterogeneous multi-core UHD video wireless transmission method was proposed.This method uses heterogeneous multi-core architecture of ARM+FPGA to integrate quad-core Cortex-A53 APU,dual-core Cortex-R5 RPU and custom FPGA.The multi-task processing and control is performed by ARM.With the help of the strong parallel processing ability of FPGA,the acceleration of the codec and communication algorithm at the hardware level is realized.According to the principle of HEVC codec and COFDM modulation and demodulation,the relevant algorithms are studied to complete the design of the series of IP cores for ultra-high definition video transmission.According to this method,a 4K UHD video wireless transmission system is built.The wireless transmission experiment was carried out using video with 4K resolute-on(3840 pixels×2160 pixels)of 60 frames per second.The results show that the rece-ived video image is played normally,video compression ratio was 6.19%,the delay time is as low as 350 ms,and the wireless transmission effect of 4K UHD video is good.

关 键 词：超高清视频 无线传输 异构多核 

分 类 号：TN919.8[电子电信—通信与信息系统]