Wireless transmission of MPEG-4 video: performance evaluation of Unequal Error Protection over a block fading channel

被引：0
|
作者：
Martini, MG [1 ]
Chiani, M [1 ]
机构：
[1] Univ Bologna, DEIS, I-40136 Bologna, Italy
来源：
IEEE VTC 53RD VEHICULAR TECHNOLOGY CONFERENCE, SPRING 2001, VOLS 1-4, PROCEEDINGS | 2001年
关键词：
D O I：
10.1109/VETECS.2001.945058
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Video transmission over a wireless channel is extremely critical. In order to increase the robustness of the MPEG-4 video bitstream to channel errors, an Unequal Error Protection (UEP) scheme is considered, exploiting the "data partitioning" tool provided by the MPEG-4 standard: each partition is protected according to its sensitivity to channel errors. Performances of such scheme are evaluated in a block fading channel, a model that is well suited to describe, for example, Slow Frequency Hopping (SFH)/TDMA mobile radio systems. Performances are evaluated in terms of PSNR and compared to the case of Equal Error Protection, with a code rate equal to the average rate of the considered UEP scheme. Results obtained with different block lengths are compared; different levels of CSl availability at the receiver are also considered.
引用
收藏
页码：2056 / 2060
页数：5
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