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Performance Analysis of Dual-Hop AF Relay Networks in the Presence of Channel Estimation Errors and Feedback Delay

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Abstract

In this letter, we investigate the performance of multiple-input multiple-output two hop beamforming amplify-and-forward (AF) relay networks under imperfect channel state information (CSI) including channel estimation errors (CEE) and feedback delay (FD). To quantify the effect of imperfect CSI on our considered network, we derive the closed-form expression for the outage probability. To gain more insight, we also present an asymptotic analysis which provides the details of the diversity order and array gain. Through our works, one can see the effect of CEE and FD on the system as well as the benefits of deploying multiple antennas at the terminals. Numerical and simulation results are provided to verify the analysis and compare the performance of the considered network for two different models for channel estimation error.

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Acknowledgments

The work was supported by the National Natural Science Foundation of China under Grant 61072067, and the “111” project under Grant B08038, and funded by the State Key Laboratory of Integrated Services Networks under the Grant ISN 1001004, and by the National Science and Technology Major Project of China under Grant 2009ZX03007-003.

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Authors and Affiliations

  1. The State Key Laboratory of Integrated Service Networks (ISN),  Xidian University, Xi’an,  710071, China

    Jing Guo & C.-X. Pei

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  1. Jing Guo
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  2. C.-X. Pei
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Correspondence to Jing Guo.

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Guo, J., Pei, CX. Performance Analysis of Dual-Hop AF Relay Networks in the Presence of Channel Estimation Errors and Feedback Delay. Wireless Pers Commun 79, 1803–1813 (2014). https://doi.org/10.1007/s11277-014-1959-9

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  • DOI: https://doi.org/10.1007/s11277-014-1959-9

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