Turbo-equalization for multilevel modulation: an efficient low-complexity scheme

被引：0
|
作者：
Dejonghe, A [1 ]
Vandendorpe, L [1 ]
机构：
[1] Catholic Univ Louvain, Commun & Remote Sensing Lab, B-1348 Louvain, Belgium
来源：
2002 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, CONFERENCE PROCEEDINGS | 2002年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
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 turboequalization 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.
引用
收藏
页码：1863 / 1867
页数：5
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