A Novel Interleaver for Interleave-Division Multiple-Access Scheme

In this paper, we suggested a practical interleaver for interleave-division multiple-access (IDMA) systems. In IDMA scheme, the users are distinguished by different chip-level interleaving methods instead of by different signatures as in conventional code-division multiple-access (CDMA) scheme. A set of interleavers is considered to be practical if it has zero-correlation with each other and also easy to generate. A properly defined correlation between interleavers can be used to formulate a collision criterion, where zero-correlation (i.e., orthogonality) implies no collision. Simulation results show that the proposed interleaver performs similar to random interleavers as reported in [2,14] IDMA system.

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