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Beamforming in Dual-Hop AF Relaying with Imperfect CSI and Co-channel Interference

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Abstract

This letter studies the joint effects of imperfect channel state information (CSI) and co-channel interference (CCI) on a dual-hop variable gain amplify-and-forward (AF) relay network with beamforming. The source and destination are both equipped with multiple antenna, while the relay has a single antenna. Specifically, the analytical expressions for the outage probability and average symbol error rate of the considered AF relaying are derived. Moreover, the asymptotic analysis at high SNR is also presented to reveal the diversity order and array gain of the relay system. Finally, computer simulations are given to confirm the validity of the proposed theoretical analysis and quantify the combined influence of imperfect CSI and CCI on the system performance.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (Grants 61271255), the Natural Science Foundation of Jiangsu Province (BK20131068), and the Open Research Fund of National Mobile Communications Research Laboratory in Southeast University (2012D15).

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Authors and Affiliations

  1. College of Communication Engineering, PLA University of Science and Technology, Nanjing, China

    Kang An & Heng Wei

  2. PLA University of Science and Technology, Nanjing, China

    Min Lin

  3. National Mobile Communications Research Laboratory, Southeast University, Nanjing, China

    Min Lin

  4. Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing, China

    Jian Ouyang

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  1. Kang An
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  2. Min Lin
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  4. Heng Wei
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Correspondence to Min Lin.

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An, K., Lin, M., Ouyang, J. et al. Beamforming in Dual-Hop AF Relaying with Imperfect CSI and Co-channel Interference. Wireless Pers Commun 78, 1187–1197 (2014). https://doi.org/10.1007/s11277-014-1811-2

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  • DOI: https://doi.org/10.1007/s11277-014-1811-2

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