amsys 17(15): e4

Research Article

Research on the Pre-coding Technology of Broadcast Stage in Multi-user MIMO System

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  • @ARTICLE{10.4108/eai.8-12-2017.153461,
        author={Guoqiang Wang and Shangfu Li},
        title={Research on the Pre-coding Technology of Broadcast Stage in Multi-user MIMO System},
        journal={EAI Endorsed Transactions on Ambient Systems},
        volume={4},
        number={15},
        publisher={EAI},
        journal_a={AMSYS},
        year={2017},
        month={12},
        keywords={Multi-user, MIMO system, precoding, block diagonalization.},
        doi={10.4108/eai.8-12-2017.153461}
    }
    
  • Guoqiang Wang
    Shangfu Li
    Year: 2017
    Research on the Pre-coding Technology of Broadcast Stage in Multi-user MIMO System
    AMSYS
    EAI
    DOI: 10.4108/eai.8-12-2017.153461
Guoqiang Wang1,*, Shangfu Li1
  • 1: Key Lab of Electronic and Communication Engineering, Heilongjiang University, Harbin, P. R. China
*Contact email: 13936697869@163.com

Abstract

For the poor transmission reliability of data, this paper focuses on the precoding techniques of the multi-user MIMO system in the broadcast phase in, and the single-user MIMO and multi-user MIMO precoding techniques have been studied. In the multi-user MIMO system, BD-MMSE-VP coding algorithm is proposed to improve the BER performance of the system by using the MMSE criterion to optimize the perturbation vector, and the system uses QR technique to decompose BD channel matrix. Simulation results verify the effective of the proposed precoding algorithm.