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Improved soft-decision feedback turbo equalization algorithm with dual equalizers

delete2022-12-01
delete4
PRE
AI
C
Congji Yin *
W
Wenjiang Feng
G
Guojun Li
DOI:10.1016/j.aeue.2022.154436delete
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摘要

摘要

En 中文
In this paper, we propose a new soft-decision feedback equalization (SDFE) technique using dual equalizers (DE) over inter-symbol inference (ISI) channels. Unlike the most existing SDFE algorithms, the proposed DE-SDFE can efficiently suppress the residual interference from anti-causal symbols. In the proposed DE-SDFE, the scaled a posteriori information of the first equalizer is passed to the second one as the new a priori information. Furthermore, in order to handle the dependency within soft information, the scaling factor is theoretically derived. Simulation results reveal that the proposed DE-SDFE remarkably outperforms the state-of-the-art soft-decision turbo equalizers, with a complexity just twice that of the SDFE.
Keyword:
Dual equalizers
Turbo soft-decision feedback equalizer
Scaled a posteriori information
Residual interference

期刊

A
AEU-International Journal of Electronics and Communications
IF:
3.2
论文数:
5.7K
被引数:
8.3K

机构

C
Chongqing University
学者数:
5.1W
论文数: 4.1W
被引数: 6.0W
C
chongqing university of posts & telecommunications
学者数:
6.7K
论文数: 5.3K
被引数: 5
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