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Cross-layer based transmit antenna selection for decision-feedback detection in correlated Ricean MIMO channels

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2 Author(s)
Hassan A. Abou Saleh ; Department of Electrical and Computer Engineering, Concordia University, Montréal, Quebec, H3G 1M8, Canada ; Walaa Hamouda

In this paper, we investigate a cross-layer transmit antenna selection (AS) approach for the decision-feedback detector (DFD) over spatially correlated flat Rician fading multiple-input multiple-output (MIMO) channels. Closed-form expressions for the system throughput with both perfect and imperfect channel estimation are derived. Considering a training-based channel estimation technique, we show that the capacity-based AS is more robust to imperfect channel estimation. However, in all cases, the cross-layer AS delivers higher throughput gains than the capacity-based AS.

Published in:

IEEE Transactions on Wireless Communications  (Volume:8 ,  Issue: 4 )