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A reduced complexity zero-forcing beamformer design for multiuser MIMO systems

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Abstract

Zero-forcing beamforming under per-antenna power constraints is considered for rural applications. By exploring the structures of a deterministic line-of-sight channel matrix, some properties are found for the optimal weighting matrix. Particularly, some constraints can be removed from the original formulation. With these properties, a reduced complexity zero-forcing beamformer design is proposed. Numerical examples under several different scenarios are provided.

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Acknowledgements

This work was supported by a Discovery Grant from the Australia Research Council (No. DP120103859) and a grant from National Natural Science Foundation of China (No. 61701124).

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Authors and Affiliations

  1. School of Electrical Engineering and Information, Sichuan University, Chengdu, China

    Bin Li

  2. School of Mathematical Science, Chongqing Normal University, Chongqing, China

    Zhi Guo Feng

  3. Department of Mathematics and Statistics, Curtin University, Perth, Australia

    Hai Huyen Dam

  4. School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Crawley, Australia

    Antonio Cantoni

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  1. Bin Li
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  2. Zhi Guo Feng
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  3. Hai Huyen Dam
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  4. Antonio Cantoni
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Correspondence to Bin Li.

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Li, B., Feng, Z.G., Dam, H.H. et al. A reduced complexity zero-forcing beamformer design for multiuser MIMO systems. Optim Lett 12, 1373–1386 (2018). https://doi.org/10.1007/s11590-017-1182-1

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  • DOI: https://doi.org/10.1007/s11590-017-1182-1

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