Robust image transmission over CDMA channels

被引：8
|
作者：
Dang, PP [1 ]
Chau, PM [1 ]
机构：
[1] Univ Calif San Diego, ECE Dept, La Jolla, CA 92093 USA
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2000年 / 46卷 / 03期
关键词：
wireless communication; CDMA; DWT; wavelet transform; image compression;
D O I：
10.1109/30.883428
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The transmission of real-time images and video over wireless communication channels is a challenging problem. Digital compressed images are sensitive to bit errors which are typical in wireless communications. Moreover, the bandwidth at the air interface is currently a limiting factor because the first and second generation of mobile phone standards mainly support voice communications. In this paper, we present a study of real-time image traffic over a radio link - the aim of this research is for videophone applications. In this study, we use the Discrete Wavelet Transform (DWT) to compress images and a Code Division Multiple Access (CDMA) link to transfer images over wireless communications network. The experiment results indicate that it is possible to transfer 9-12 QCIF gray scale images per second over a CDMA link with graceful degradation in image quality.
引用
收藏
页码：664 / 672
页数：9
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