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Precoding scheme maximizing SINR for MIMO broadcast channels

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Abstract

An improved precoding scheme for multiple-input multiple-output (MIMO) broadcast channel (BC) is proposed to maximize the detection signal-to-interference-plus-noise ratio (SINR) at user side based on the vector-perturbation technique. With the derived maximum detection SINR criterion, a new tree search based detection algorithm, called iterative M-algorithm (IMA), is utilized to find out the optimal perturbation vector. Simulations show that the proposed scheme outperforms the existing schemes which are based on the maximum detection signal-to-noise ratio (SNR) criterion. Moreover, the proposed scheme can achieve the same bit error rate (BER) performance as the vector-perturbation scheme based on sphere encoder and the maximum detection SINR criterion, with guaranteed polynomial worst-case complexity.

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Authors and Affiliations

  1. State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an, 710071, China

    JianPing Zheng, BaoMing Bai & XinMei Wang

  2. Department of Electronics and Communications Engineering, Sun Yat-sen University, Guangzhou, 510275, China

    Xiao Ma

Authors
  1. JianPing Zheng
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  2. BaoMing Bai
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  3. Xiao Ma
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  4. XinMei Wang
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Correspondence to JianPing Zheng.

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Zheng, J., Bai, B., Ma, X. et al. Precoding scheme maximizing SINR for MIMO broadcast channels. Sci. China Inf. Sci. 53, 1431–1438 (2010). https://doi.org/10.1007/s11432-010-3098-6

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  • DOI: https://doi.org/10.1007/s11432-010-3098-6

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