Adaptive Bit Loading and Transmit Diversity for Iterative OFDM Receivers
Wireless Personal Communications: An International Journal
On the capacity of BICM with QAM constellations
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Distribution of L-values in gray-mapped M2-QAM: closed-form approximations and applications
IEEE Transactions on Communications
Code-matched interleaver design over surrogate channels
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Distribution of max-log metrics for QAM-based BICM in fading channels
IEEE Transactions on Communications
Exploiting UEP in QAM-based BICM: interleaver and code design
IEEE Transactions on Communications
Unequal error protection in BICM with QAM constellations: interleaver and code design
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
IEEE Transactions on Wireless Communications
A bit-labeling design for trellis-shaped single-carrier PSK with PAPR reduction
EURASIP Journal on Advances in Signal Processing - Special issue on advances in single carrier block modulation with frequency domain processing
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The problem of finding the optimal labeling (bit-to-symbol mapping) of multilevel coherent phase shift keying (PSK), pulse amplitude modulation (PAM), and quadrature amplitude modulation (QAM) constellations with respect to minimizing the bit-error probability (BEP) over a Gaussian channel is addressed. We show that using the binary reflected Gray code (BRGC) to label the signal constellation results in the lowest possible BEP for high enough signal energy-to-noise ratios and analyze what is "high enough" in this sense. It turns out that the BRGC is optimal for PSK and PAM systems whenever the target BEP is at most a few percent, which covers most systems of practical interest. New and simple closed-form expressions are presented for the BEP of PSK, PAM, and QAM using the BRGC