Decision feedback detection for MIMO-ISI channels: design using fixed and adaptive constraints
Article
Nguyen, H. and Choi, J. 2007. Decision feedback detection for MIMO-ISI channels: design using fixed and adaptive constraints. IEEE Transactions on Vehicular Technology. 56 (6), pp. 3931-3937. https://doi.org/10.1109/TVT.2007.901873
Type | Article |
---|---|
Title | Decision feedback detection for MIMO-ISI channels: design using fixed and adaptive constraints |
Authors | Nguyen, H. and Choi, J. |
Abstract | In this correspondence, we investigate the decision-feedback detection for multiple-input multiple-output intersymbol-interference (MIMO-ISI) channels. First, a novel constrained symbol-by-symbol decision-feedback detector (DFD) is proposed, in which a constraint on the feedback filter provides robustness against error propagation and outperforms the conventional DFD. However, we find that an error floor is observed at high signal-to-noise ratios (SNRs) if a fixed constraint is used. To resolve this problem, we then propose an iterative symbol-by-symbol DFD in which an adaptive constraint is implicitly used to update the DFD’s coefficients. Simulation results show that the error-floor problem is overcome and that the performance becomes satisfactory at high SNRs through iterations. |
Keywords | constrained optimization; decision-feedback detection; error propagation; iterative processing; multiple-input multiple-output intersymbol-interference (MIMO-ISI) channel |
Research Group | SensoLab group |
Publisher | IEEE |
Journal | IEEE Transactions on Vehicular Technology |
ISSN | 0018-9545 |
Electronic | 1939-9359 |
Publication dates | |
Online | 19 Nov 2007 |
Nov 2007 | |
Publication process dates | |
Deposited | 19 Apr 2011 |
Output status | Published |
Copyright Statement | Post refereed version as permitted by publisher. (4/11) |
Digital Object Identifier (DOI) | https://doi.org/10.1109/TVT.2007.901873 |
Web of Science identifier | WOS:000251192300031 |
Language | English |
File |
https://repository.mdx.ac.uk/item/83478
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