Signal superposition multiplexing for scalable video transmission
Signal superposition multiplexing for scalable video transmission
复制标题
用于可扩展视频传输的信号叠加复用
DOI：
10.1109/pimrc.2013.6666729
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Zhilu Wu
中科院分区：
文献类型：
--
作者：
Shuying Li;Yaqin Zhao;Zhilu Wu
本文提出了一种信号叠加层复用的可伸缩视频编解码器（SVC）编码视频无线广播系统。SVC编码的视频层被分组成各种组，并且每个组被独立地编码到信号层中。使用信号叠加对各个信号层进行多路复用，然后进行传输。我们引入了原来用于干扰信道的连续分组解码器，从接收到的叠加信号中解码出多个信号层。基于连续组解码器的最优解码顺序，我们提出了信号层分配，该分配保证每个接收器首先解码从SVC基本层编码的信号层，然后解码从SVC增强层编码的信号层。从仿真结果来看，与正交信道SVC层复用相比，信号叠加SVC层复用显示出重构视频的显著峰值信噪比（PSNR）改善，例如，时分多址（TDMA）。
In this paper, we propose a signal superposition layer multiplexing for the scalable video codec (SVC) coded video wireless broadcasting system. The SVC coded video layers are grouped into various groups and each group is encoded independently into a signal layer. The various signal layers are multiplexed using signal superposition and then transmitted. We introduce successive group decoder, originally used for interference channels, to decode the multiple signal layers from the received superimposed signals. Based on the optimal decoding order of the successive group decoder, we propose the signal layer allocation which guarantees that each receiver first decodes the signal layer encoded from the SVC base layer and then decodes those encoded from the SVC enhancement layers. From simulation results, the signal superposition SVC layer multiplexing shows significant peak signal-noise-ratio (PSNR) improvement for the reconstructed video, compared with the orthogonal channel SVC layer multiplexing, e.g., the time division multiple access (TDMA).
DOI：
10.1109/tcsvt.2007.905532
发表时间：
2007-09-01
影响因子：
8.4
作者：
Schwarz, Heiko;Marpe, Detlev;Wiegand, Thomas
通讯作者：
Wiegand, Thomas