Turbo-equalization for multilevel modulation: an efficient low-complexity scheme
(2002) Proceedings of IEEE International Conference on Communications — Location: New York, NY, USA (28.April.2002)
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- Abstract
- This paper addresses the problem of iterative equalization and decoding (turbo-equalization) when bit-interleaved multilevel modulations are considered. The goal is to propose an efficient low-complexity solution in this context, where optimal turbo-equalization is totally untractable. Therefore, we generalize reduced-complexity soft-in/soft-out (SISO) equalizers based on the minimum mean square error (MMSE) criterion (originally proposed in a BPSK context) to this particular scheme. Performances are illustrated through simulations. We show the influence of the mapping on the signal-to-noise ratio (SNR) threshold and on asymptotic performances, and link the obtained results to iterative demodulation and decoding on an additive white Gaussian noise (AWGN) channel.
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Dejonghe, A., & Vandendorpe, L. (2002). Turbo-equalization for multilevel modulation: an efficient low-complexity scheme. 2002 IEEE International Conference on Communications. ConferenceProceedings. ICC 2002 (Cat. No.02CH37333), Vol. 3, p. 1863-1867. https://doi.org/10.1109/ICC.2002.997171