Broadband Communications, Networks, and Systems. 9th International EAI Conference, Broadnets 2018, Faro, Portugal, September 19–20, 2018, Proceedings

Research Article

The Performance of SLNR Beamformers in Multi-user MIMO Systems

  • @INPROCEEDINGS{10.1007/978-3-030-05195-2_40,
        author={Khalid Hameed and Ahmed Abdulkhaleq and Yasir Al-Yasir and Naser Ojaroudi Parchin and Ashwain Rayit and Majid Khambashi and Raed Abd-Alhameed and James Noras},
        title={The Performance of SLNR Beamformers in Multi-user MIMO Systems},
        proceedings={Broadband Communications, Networks, and Systems. 9th International EAI Conference, Broadnets 2018, Faro, Portugal, September 19--20, 2018, Proceedings},
        proceedings_a={BROADNETS},
        year={2019},
        month={1},
        keywords={Beamforming Generalized eigenvalue decomposition MU-MIMO Optimal point SLNR},
        doi={10.1007/978-3-030-05195-2_40}
    }
    
  • Khalid Hameed
    Ahmed Abdulkhaleq
    Yasir Al-Yasir
    Naser Ojaroudi Parchin
    Ashwain Rayit
    Majid Khambashi
    Raed Abd-Alhameed
    James Noras
    Year: 2019
    The Performance of SLNR Beamformers in Multi-user MIMO Systems
    BROADNETS
    Springer
    DOI: 10.1007/978-3-030-05195-2_40
Khalid Hameed, Ahmed Abdulkhaleq, Yasir Al-Yasir1, Naser Ojaroudi Parchin1, Ashwain Rayit2, Majid Khambashi3, Raed Abd-Alhameed1,*, James Noras1
  • 1: Bradford University
  • 2: SARAS Technology Limited
  • 3: Al-Zahra College for Women
*Contact email: r.a.a.abd@bradford.ac.uk

Abstract

Beamforming in multi-user MIMO (MU-MIMO) systems is a vital part of modern wireless communication systems. Researchers looking for best operational performance normally optimize the problem and then solve for best weight solutions. The weight optimization problem contains variables in numerator and dominator: this leads to so-called variable coupling, making the problem hard to solve. Formulating the optimization in terms of the signal to leakage and noise ratio (SLNR) helps in decoupling the problem variables. In this paper we study the performance of the SLNR with variable numbers of users and handset antennas. The results show that there is an optimum and the capacity curve is a concave over these two parameters. The performances of two further variations of this method are also considered.