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Efficient detection algorithms for multi-input/multi-output systems by exploiting the non-circularity of transmitted signal source

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3 Author(s)
Ding, Y. ; Lab. IREENA, Univ. de Nantes, Nantes, France ; Wang, Y. ; Diouris, J.-F.

In this study, several new detection algorithms are proposed for multi-input/multi-output (MIMO) communication systems transmitting non-circular signals. Unlike the conventional receivers, the proposed detectors estimate the transmitted signal from both the received signal and its complex conjugate version. Analytical results quantifying the performance improvement are provided. As a typical example, extended zero-forcing (EZF) detector and extended minimum mean square error (EMMSE) detector are derived for the real signals. Computational complexity of the proposed algorithms remains the same order as that of the conventional zero-forcing (ZF). Simulation results show that both EZF and EMMSE detectors significantly outperform the conventional minimum mean square error (MMSE) detector, and that the ordered-successive-interference-cancelling (OSIC) version of the EZF (or EMMSE) detector has a quasi-optimal performance in terms of bit error rate (BER).

Published in:

Signal Processing, IET  (Volume:5 ,  Issue: 2 )

Date of Publication:

April 2011

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