Adaptive Interleaving for Bit-Interleaved Coded Modulation

In this paper interleaver design for bit-interleaved coded modulation and systems with channel-state information at the transmitter is investigated. Based on the bit level capacities of an equivalent channel model an advantageous interleaver design is proposed. Understanding the varying level capacities as the result of a "fading" process, suited bit metric arrangements in the decoder can significantly increase the performance. Numerical results show the superiority of the assessed approach over conventional interleaving and even over rate and power loading.