Scalable image transmission over differentially space-time coded OFDM systems

被引：0
|
作者：
Sun, Y [1 ]
Xiong, ZX [1 ]
Wang, XD [1 ]
机构：
[1] Texas A&M Univ, Dept Elect Engn, College Stn, TX 77843 USA
来源：
GLOBECOM'02: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-3, CONFERENCE RECORDS: THE WORLD CONVERGES | 2002年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper combines joint source-channel coding, differential space-time coding and OFDM for scalable image transmission over differentially space-time coded OFDM (DSTC-OFDM) systems. The SNR vs. BER performances of these systems are measured by simulation. We consider transmitting embedded Source bitstreams over such systems using product channel codes that are designed to combat both bit errors and fading. For a given average SNR (hence BER), a fast joint source-channel coding algorithm is used to optimize the product code rates. Experiments show that the diversity gain in our DSTC-OFDM system can be translated into quality gains (in PSNR) in transmitted images.
引用
收藏
页码：379 / 383
页数：5
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