An interleaver permutes symbols according to a mapping. A corresponding deinterleaver uses the inverse mapping to restore the original sequence of symbols. Interleaving and deinterleaving can be useful for reducing errors caused by burst errors in a communication system. This chapter describes the interleaving features of Communications Toolbox software in the sections listed below.

Each interleaver function in this toolbox has a corresponding deinterleaver function. In typical usage of the interleaver/deinterleaver pairs, the inputs of the deinterleaver match those of the interleaver, except for the data being rearranged.

Cyclic Redundancy Check Coding

Block Interleavers

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