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With the development of mobile communication, data
transmissionover wireless channels is getting more popular
recently. We face two problems in wireless communication,
limited bandwidth and high error rates. When using progressive
coding, the decoder can decide where to stop receiving data to
save bandwidth. In this thesis, we focus on the progressive mode
in JPEG image compression standard over relatively high error
rate channels. We utilize synchronization technique in JPEG
standard to isolate error blocks, and then use the corresponding
error concealment technique based on its error position
occurring in spectral selection or successive approximation
progressive mode. The concealment technique improves subjective
quality of reconstruction image.
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