Ανθεκτική μετάδοση εικόνων σε ασύρματα κανάλια

Abstract

In the present thesis the robust coding and transmission of images over wireless channels and binary symmetric channels are studied. Specifically, image coding schemes which generate embedded bitstreams using wavelets are examined. Independent encoding of transformed images into sub-bitstreams is proposed for allowing decoding in case of uncorrectable errors. Product codes employing advanced channel coding techniques are used for the efficient protection of bitstreams. Optimal channel allocation is also examined in the present thesis. For this purpose, novel algorithms for optimal channel rate allocation using dynamic programming techniques and Lagrage multipliers are developed