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Interleaver Design for Parallel Concatenated Chaos-Based Coded Modulations

It is a well known property that turbo-like systems owe their success to the principle of reducing error event multiplicities rather than just minimizing related error distances. It has also been shown that Parallel Concatenated Chaos-Based Coded Modulations exploit further this principle, and this article explains how to take advantage of their typical error event structure to heuristically build interleavers with improved error floor properties. Simulations will prove the validity of the approach, as well as its limits and trade-offs.