Source-channel coding of video signals for transmissions in heterogeneous network with collisions

The problem of data transmission in a heterogeneous network environment involves many considerations, among these: the design and selection of coding schemes and transmissions techniques are the most relevant. The interest in mobile multimedia networks has stimulated the research in this field. Significant progress has been made in this technology. The problem becomes more relevant if we desire to transmit signals in wireline and wireless networks. Progressive transmission is very useful for sending video and, in general, multimedia data over band-limited channels; although it presents problems over noisy channels due to its use of variable length coding. It therefore requires high quality methods to avoid channels noises. One approach is to merge the above mentioned progressive transmission with VQ 2-D-CELP of video over fading channels approach that extends the concept of CELP for speech coding. This technique employ an inverse error predictor filter, an iterative clustering method to design the predictors form an initial array and an algorithm to determine the block size. We state the general design problem, decompose it into simpler subproblems and discuss the solutions to these subproblems.