LINEAR GROUP PRECODING FOR MASSIVE MIMO SYSTEMS UNDER EXPONENTIAL SPATIAL CORRELATION

  • Dinh Van Khoi Le Quy Don Technical University
  • Le Minh Tuan MobiFone R&D Center, MobiFone Corporation
  • Ngo Vu Duc Hanoi University of Science and Technology
  • Ta Chi Hieu Le Quy Don Technical University
Keywords: MU-MIMO system, massive MIMO system, linear precoding algorithms, nonlinear precoding algorithms, lattice reduction algorithm in MIMO system

Abstract

In this paper, a low-complexity linear group precoding algorithm in the exponential correlation channel model is proposed for massive MIMO systems. The proposed precoder consists of two components: The first one minimizes the interferences among neighboring user groups; The second one improves the system performance by utilizing the ELR-SLB technique. Numerical and simulation results show that the proposed precoder has remarkably lower computational complexity than its LC-RBD-LR-ZF counterpart, while its bit error rate (BER) performance is asymptotic to that of the LC-RBD-LR-ZF precoder as the number of groups increases.

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Published
2021-05-25
Issue
Vol. 15 No. 01 (2020)
Section
ARTICLES