Throughput maximization transmission control scheme using precoding for MIMO systems

Kenichi Kobayashi, Tomoaki Ohtsuki, Toshinobu Kaneko

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Multiple-input multiple-output (MIMO) systems that realize a high-speed data transmission with multiple antennas at both transmitter and receiver are drawing much attention. In MIMO systems, it has been reported that the scheme that weights transmitted signals based on minimum mean square error (MMSE) criterion at the transmitter using feedback channel state information (CSI) achieves good performance (denoted hereafter as MMSE precoding). A throughput maximization transmission control scheme (TMTC) that selects the transmission mode (modulation schemes and code rates) based on CSI has been proposed. We expect that its throughput performance can be improved by addition of MMSE precoding. However, throughput performance is degraded in the presence of feedback delay. In this paper, we propose TMTC with MMSE precoding; it reduces the throughput performance degradation by using channel prediction and the receive weights robust against feedback delay. The proposed scheme selects a transmission mode (the number of substreams, modulation schemes, and code rates) and configures the precoder to achieve maximum throughput based on the SINR given by channel prediction. Simulation results show that even when feedback delay exists, the proposed scheme attains high throughput.

本文言語English
ホスト出版物のタイトル2007 IEEE International Conference on Communications, ICC'07
ページ5098-5102
ページ数5
DOI
出版ステータスPublished - 2007 12 1
イベント2007 IEEE International Conference on Communications, ICC'07 - Glasgow, Scotland, United Kingdom
継続期間: 2007 6 242007 6 28

出版物シリーズ

名前IEEE International Conference on Communications
ISSN(印刷版)0536-1486

Other

Other2007 IEEE International Conference on Communications, ICC'07
国/地域United Kingdom
CityGlasgow, Scotland
Period07/6/2407/6/28

ASJC Scopus subject areas

  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学

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