Bit-Interleaved Coded Modulation
Foundations and Trends in Communications and Information Theory
Exploiting UEP in QAM-based BICM: interleaver and code design
IEEE Transactions on Communications
Bit-interleaved coded modulation
IEEE Transactions on Information Theory
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In this letter, we study the performance of BICM-ID with multiple interleavers (BICM-ID-M) in terms of bit-error rate (BER), and show that BICM-ID-M is well-suited to exploit the unequal error protection (UEP) caused by the binary labeling. We show that BICM-ID-M should always be the preferred alternative for BICM-ID and that the gains obtained appear even for the simplest configuration (0.5-0.75 dB for a BER of 10-7). It is found that conventional design paradigms such as maximizing the free distance of the code should be modified.