A low-complexity uplink multiuser scheduling for virtual MIMO systems

Hsien Wen Chang, Li-Chun Wang

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Multiple-input-multiple-output (MIMO) antenna systems can provide the spatial multiplexing gain to enhance spectrum efficiency, but they are hampered by the fact that the number of antennas in a handheld mobile device is smaller than that of a base station. To overcome this issue, the virtual MIMO techniques arrange a group of single-antenna mobile users to become a virtual multiple-antenna entity. However, existing virtual MIMO techniques are either applicable only to a small group or computationally too complex. We propose a low-complexity user scheduling for virtual MIMO with a flexible group size. In comparison with existing approaches, our results show that the proposed user scheduling for virtual MIMO can reduce the floating operations by 96% in the case of a 6 × 6 virtual MIMO system while maintaining the same throughput and fairness performance.

Original languageEnglish
Article number2394368
Pages (from-to)463-466
Number of pages4
JournalIEEE Transactions on Vehicular Technology
Volume65
Issue number1
DOIs
StatePublished - 1 Jan 2016

Keywords

  • Multiple-input multiple-output (MIMO)
  • Proportional fairness
  • Spatial multiplexing
  • Virtual MIMO

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