Seamless change of depth of a general convolutional interleaver during transmission without loss of data

The application relates to the adjustment of a convolutional interleaver depth in a communication system. Upon determination of a change in interleaver depth, the interleaving depth is adjusted by means of selective transmission of data bytes (156) or dummy bytes (160) based on a distance in time between a data byte about to be transferred from one of a plurality of transmission FIFOs associated with the convolutional interleaver and an immediately preceding byte within the original interleaver data block (154).