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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Image Transmission with Adaptive Power and Rate Allocation over Flat Fading Channels Using Joint Source Channel Coding
verfasst von : Greg H. Håkonsen, Tor A. Ramstad, Anders Gjendemsjø
Erschienen in: E-Business and Telecommunication Networks
Verlag: Springer Berlin Heidelberg
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A joint source channel coder (JSCC) for image transmission over flat fading channels is presented. By letting the transmitter have information about the channel, and by letting the code-rate vary slightly around a target code-rate, it is shown how a robust image coder is obtained by using time discrete amplitude continuous symbols generated through the use of nonlinear dimension changing mappings. Due to their robustness these mappings are well suited for the changing conditions on a fading channel.