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Performance of Vector Perturbation MU-MIMO Systems in a Composite Fading Channel

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Abstract

In this paper, we analyze the performance of vector perturbation (VP) precoded multiuser multiple-input multiple-output (MU-MIMO) systems in a composite fading channel including not only small-scale Rayleigh fading but also large-scale fading for getting useful conclusion in a more realistic scenario. Through the derivation of average power of sphere-encoded vectors, we obtained the closed-form expression of the sum rate tight lower bound of VP precoded MU-MIMO systems, which is a function of the number of transmit/receive antennas, transmit power and large-scale fading parameters. From the analytical expression of sum rate and error probability bounds, it is concluded that the performance of VP precoded MU-MIMO systems deteriorates severely when intended users experience very different large-scale fadings. Simulation results validate our analysis.

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Acknowledgments

This work was supported by National Natural Science Foundation of China (61301168,61271176,61571350), Natural Science Basic Research Plan in Shaanxi Province of China (2013JQ8001), Fundamental Research Funds for the Central Universities (K5051201001), National Science and Technology Major Project (2011ZX03001-007-01,2013ZX03004007-003), Open Research Fund of National Mobile Communications Research Laboratory (2012D01) and the 111 Project (B08038).

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Authors and Affiliations

  1. State Key Laboratory of Integrated Service Networks, Xidian University, Xian, China

    Rui Chen, Changle Li, Jiandong Li & Xuelian Cai

  2. National Mobile Communications Research Laboratory, Southeast University, Jiangsu, China

    Changle Li

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  1. Rui Chen
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  2. Changle Li
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  3. Jiandong Li
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  4. Xuelian Cai
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Correspondence to Rui Chen.

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Chen, R., Li, C., Li, J. et al. Performance of Vector Perturbation MU-MIMO Systems in a Composite Fading Channel. Wireless Pers Commun 89, 135–147 (2016). https://doi.org/10.1007/s11277-016-3256-2

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  • DOI: https://doi.org/10.1007/s11277-016-3256-2

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