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Iterative Symbol-by-symbol Decision Feedback Detection for MIMO-ISI Channels

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2 Author(s)
Xuan Huan Nguyen ; University of New South Wales (UNSW) & National ICT Australia (NICTA), Sydney, Australia. Email: ; Jinho Choi

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

Published in:

APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems

Date of Conference:

4-7 Dec. 2006