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5G for Future Wireless Networks. First International Conference, 5GWN 2017, Beijing, China, April 21-23, 2017, Proceedings

Research Article

LR-RZF Pre-coding for Massive MIMO Systems Based on Truncated Polynomial Expansion

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  • @INPROCEEDINGS{10.1007/978-3-319-72823-0_39,
        author={Chi Zhang and Zhengquan Li and Yaoyao Sun and Lianfeng Shen and Xinxin Ni},
        title={LR-RZF Pre-coding for Massive MIMO Systems Based on Truncated Polynomial Expansion},
        proceedings={5G for Future Wireless Networks. First International Conference, 5GWN 2017, Beijing, China, April 21-23, 2017, Proceedings},
        proceedings_a={5GWN},
        year={2018},
        month={1},
        keywords={LR RZF TPE Massive MIMO},
        doi={10.1007/978-3-319-72823-0_39}
    }
    
  • Chi Zhang
    Zhengquan Li
    Yaoyao Sun
    Lianfeng Shen
    Xinxin Ni
    Year: 2018
    LR-RZF Pre-coding for Massive MIMO Systems Based on Truncated Polynomial Expansion
    5GWN
    Springer
    DOI: 10.1007/978-3-319-72823-0_39
Chi Zhang1,*, Zhengquan Li,*, Yaoyao Sun1,*, Lianfeng Shen1,*, Xinxin Ni2,*
  • 1: Southeast University
  • 2: Nanjing University of Posts and Telecommunications
*Contact email: ci26zhang@163.com, lzq722@seu.edu.cn, 220150799@seu.edu.cn, Ifshen@seu.edu.cn, 2215798002@qq.com

Abstract

In order to effectively eliminate multi-user interference at the transmitter, the transmit signals are needed to be pre-processing, which is called pre-coding. Traditional linear pre-coding algorithms, especially regularized zero forcing (RZF) pre-coding, are famous for good performance and low computation complexity. However, they cause noise amplification which requires high transmit power to prevent. Lattice-reduction aided (LR-aided) technique is used to deal with the row/column of matrix, which can make the matrix orthogonality better. Therefore, to avoid noise amplification as well as effectively eliminate the multi-user interference, we propose a LR-RZF pre-coding algorithm which based on matrix truncated polynomial expansion (TPE) with terms. TPE method can decrease the complexity of matrix inversion in RZF. Compared with RZF pre-coding, LR-RZF pre-coding has lower bit error rate.

Keywords
LR RZF TPE Massive MIMO
Published
2018-01-19
Appears in
SpringerLink
http://dx.doi.org/10.1007/978-3-319-72823-0_39
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