INTERLEAVER APPARATUS AND RECEIVER FOR A SIGNAL PRODUCED BY THE INTERLEAVER APPARATUS

摘要

A convolution interleaver for processing a codeword which is derived from an input block of symbols using a redundancy-adding code (22) and which has more symbols than the input block, where the codeword has a sequence of interleaving units, each interleaving unit having at least two symbols, comprises an interleaving device (10). The interleaving device alters the sequence of interleaving units in order to obtain an interleaved codeword which has an altered sequence of interleaving units. In particular, the interleaving device does not alter the order of the symbols within an interleaving unit. However, the order of the interleaving units in the codeword is altered among one another or in respect of a preceding or succeeding codeword.