Journal of Korea Society of Digital Industry and Information Management (디지털산업정보학회논문지)

Korea Society of Digital Industry and Information Management (디지털산업정보학회)
권호 표지

Generalized User Selection Algorithm im Downlink Multiuser MIMo System

하향링크 다중 사용자 MIMO 시스템에서의 일반화된 사용자 선택 알고리즘

  • 강대근 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 신창의 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 금동현 (한양대학교 전자컴퓨터통신공학과 통신신호처리연구실) ;
  • 최승원 (한양대학교 전자컴퓨터통신공학과)
  • Published : 2012.12.30
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Abstract

Recently, there are many user selection algorithms in multi user multiple-input multiple-output (MU-MIMO) systems. One of well-known user selection methods is Semi orthogonal user selection (SUS). It is an algorithm maximizing channel capacity. However, it is applicable only when user's antenna is one. We propose a generalized user selection algorithm regardless of the number of user's antennas. In the proposed scheme, Base station (Bs) selects the first user who has the highest determinant of channel and generates a user group that correlation with first user's channel is less than allowance of correlation. Then, each determinant of channels made up of first user's channel and a user's channel in the generated group is calculated and BS selects the next user who has the highest determinant of that. BS selects following users by repeating above procedure. In this paper, we get better performance because of selecting users who have the highest determinant of channel as well as allowance of correlation optimally calculated through matrix operations.

Keywords

References

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