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The Performance of SLNR Beamformers in Multi-user MIMO Systems

  • Khalid W. Hameed
  • Ahmed M. Abdulkhaleq
  • Yasir Al-Yasir
  • Naser Ojaroudi Parchin
  • Ashwain Rayit
  • Majid Al Khambashi
  • Raed A. Abd-Alhameed
  • James M. Noras
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 263)

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.

Keywords

Beamforming Generalized eigenvalue decomposition MU-MIMO Optimal point SLNR 

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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2019

Authors and Affiliations

  • Khalid W. Hameed
    • 1
    • 2
  • Ahmed M. Abdulkhaleq
    • 1
    • 2
  • Yasir Al-Yasir
    • 1
  • Naser Ojaroudi Parchin
    • 1
  • Ashwain Rayit
    • 3
  • Majid Al Khambashi
    • 4
  • Raed A. Abd-Alhameed
    • 1
  • James M. Noras
    • 1
  1. 1.Bradford UniversityBradfordUK
  2. 2.Al-Nahrain UniversityBaghdadIraq
  3. 3.SARAS Technology LimitedLeedsUK
  4. 4.Al-Zahra College for WomenMuscatOman

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