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

  • Chi ZhangEmail author
  • Zhengquan Li
  • Yaoyao Sun
  • Lianfeng Shen
  • Xinxin Ni
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 211)


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 J 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.





This work was supported in part by the National Natural Science Foundation of China (61571108), the Open Foundation of State key Laboratory of Networking and Switching Technology (Beijing University of Posts and Telecommunications) (SKLNST-2016-2-14), and the China Postdoctoral Science Foundation Funded Project (No. 2012M511175).


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2018

Authors and Affiliations

  • Chi Zhang
    • 1
    Email author
  • Zhengquan Li
    • 1
    • 2
  • Yaoyao Sun
    • 1
  • Lianfeng Shen
    • 1
  • Xinxin Ni
    • 3
  1. 1.National Mobile Communications Research LaboratorySoutheast UniversityNanjingChina
  2. 2.State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijingChina
  3. 3.School of Electronic Engineering of Tongda CollegeNanjing University of Posts and TelecommunicationsYangzhouChina

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