Phase selection in round-robin scheduling sequence for distributed antenna system

Go Otsuru, Yukitoshi Sanada

Research output: Contribution to journalArticlepeer-review

Abstract

One of key technologies in the fifth generation mobile communications is a distributed antenna system (DAS). As DAS creates tightly packed antenna arrangements, inter-user interference degrades its spectrum efficiency. Round-robin (RR) scheduling is known as a scheme that achieves a good trade-off between computational complexity and spectrum efficiency. This paper proposes a user equipment (UE) allocation scheme for RR scheduling. The proposed scheme offers low complexity as the phase of UE allocation sequences are predetermined. Four different phase selection criteria are compared in this paper. Numerical results obtained through computer simulation show that maximum selection, which sequentially searches for the phase with the maximum tentative throughput realizes the best spectrum efficiency next to full search. There is an optimum number of UEs which obtains the largest throughput in single-user allocation while the system throughput improves as the number of UEs increases in 2-user RR scheduling.

Original languageEnglish
Pages (from-to)1155-1163
Number of pages9
JournalIEICE Transactions on Communications
VolumeE103B
Issue number10
DOIs
Publication statusPublished - 2020 Oct 1

Keywords

  • Distributed antenna system
  • Round-robin scheduling

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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