Iterative symbol-by-symbol decision feedback detection for MIMO-ISI channels.

Nguyen, Huan X. ORCID: https://orcid.org/0000-0002-4105-2558 and Choi, Jinho (2006) Iterative symbol-by-symbol decision feedback detection for MIMO-ISI channels. In: Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference [proceedings]. IEEE, pp. 139-142. ISBN 1424403871. [Book Section] (doi:10.1109/APCCAS.2006.342333)

Abstract

This paper investigates the decision feedback detection for intersymbol interference multiple-input multiple- output (MIMO-ISI) channels. Firstly, a constrained symbol- by-symbol decision feedback detector (CS-DFD) is presented, in which a fixed constraint is used to mitigate the error propagation. Then, we propose an iterative symbol-by-symbol decision feedback detector (IS-DFD) which possibly minimizes the amount of decision error through iterations. While both methods outperform the conventional decision feedback detection, the IS-DFD can overcome the error floor problem from which the C-DFD suffers at a high signal-to-noise ratio.

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