New simple capacity estimation method for multiuser block diagonalization transmission

Riichi Kudo, Yasushi Takatori, Atsushi Ohta, Kentaro Nishimori, Snuji Kubota

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The multiple input multiple output (MIMO) technique enables the application of spatial multiplexing as a way of increasing the spectrum efficiency. However, only a few antenna branches are allowed at a simple mobile terminal (MT) and the MIMO effect is limited for those MTs. Multiuser (MU)-MIMO techniques were proposed to support such simple terminals to overcome such problems. Among them, the block diagonalization algorithm is well known as a practical linear precoding technique for downlink in the MU-MIMO systems. Because the number of users supported by the access point is limited and the improvement in the spectrum efficiency greatly depends on the combination of spatially multiplexed user, a simple transmission performance estimation method is needed. In this paper, we propose a new capacity estimation method for MU-MIMO systems. The proposed method estimates the achievable bit rate in MU-MIMO while significantly reducing the calculation load compared to that for direct estimation in the block diagonalization algorithm. Theoretical analysis and the simulation results confirm the validity of the proposed method.

本文言語English
ホスト出版物のタイトル2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
ページ1836-1840
ページ数5
DOI
出版ステータスPublished - 2007 8 2
外部発表はい
イベント2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin, Ireland
継続期間: 2007 4 222007 4 25

出版物シリーズ

名前IEEE Vehicular Technology Conference
ISSN(印刷版)1550-2252

Conference

Conference2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
国/地域Ireland
CityDublin
Period07/4/2207/4/25

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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