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Robust image transmission over CDMA channels

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2 Author(s)
Dang, P.P. ; Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA ; Chau, P.M.

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. We present a study of real-time image traffic over a radio link-the aim of this research is for videophone applications. 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

Published in:

Consumer Electronics, IEEE Transactions on  (Volume:46 ,  Issue: 3 )