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Cooperative dual-hop relaying systems with beamforming over nakagami-m fading channels

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2 Author(s)
da Costa, D.B. ; INRS-EMT, Univ. of Quebec, Montreal, QC, Canada ; Aissa, S.

In this paper, we investigate the end-to-end performance of dual-hop relaying systems with beamforming over Nakagami-m fading channels. Our analysis considers semi-blind (fixed-gain) relays with single antennas, and source and destination nodes equipped with multiple antennas. Closed-form expressions for the outage probability (OP), moment generating function (MGF), and generalized moments of the end-to-end signal-to-noise ratio (SNR) are derived. The proposed expressions apply to general operating scenarios with distinct Nakagami-m fading parameters and average SNRs between the hops. The influence of the power imbalance, fading parameters, and antenna configurations on the overall system performance are analyzed and discussed through representative numerical examples. Furthermore, the exactness of our formulations is validated by means of Monte Carlo simulations.

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