Layered image transmission over cellular radio channels

In the paper, a layered image transmission system is developed over cellular radio channels. The image coder is based on a multiresolution representation coupled with the ISO JPEG baseline coding standard. The multiresolution representation forms a pyramid in which information is layered in terms of different priorities that facilitates a more efficient use of forward error correction coding (FEC). After an error sensitivity analysis for different layers in an equalized mobile radio channel, an error control scheme based on block-interleaving and Bose-Chaudhuri-Hocquenghem (BCH) codes is proposed to minimize the effect of bursty channel errors on the picture quality degradation. Application of the new technique to the proposed Telecommunications Industry Association (TIA) Northern American digital cellular standard (IS-54) under different vehicle speeds with a signal-to-noise ratio of 22 dB is also investigated. Simulation results using a standard test image are presented to show the significant advantage of the proposed approach