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研究科紹介

特任助教 Constantin (Costi) Siriteanu

Constantin (Costi) Siriteanu コンスタンティン シリテアヌ

  • 情報システム工学専攻
  • 情報システム構成学講座

研究テーマ・概要

Wireless Communications Systems Analysis and Evaluation

Wireless transmission reliability and capacity can be greatly enhanced by employing multiple antennas at transmitter(s) and receiver(s). This concept is referred to as multiple-input multiple-output (MIMO). During MIMO development, channel and transceiver imperfection models have evolved from simple, but unrealistic, to realistic, but complex.

My research has been developing a systematic framework to express MIMO performance measures for increasingly more realistic channel models. Thus, starting from statistical models about the MIMO channel and transceiver imperfections, we have used random matrix theory to derive statistics of MIMO performance measures. However, some of the derivation procedures are nearly untractable and yield performance-measure expressions that are so complicated (e.g., in terms of special functions) that their numerical computation is prone to inaccuracy and even breakdown. However, we have recently discovered that we do not always need to derive actual expressions for performance measures. We may instead deduce and use the differential equations satisfied by such measures. Through this approach (called `holonomic gradient method'), we became able to evaluate the performance of MIMO with linear transceiver processing under realistic fading. These preliminary results will guide our efforts to provide and enhance performance analysis and evaluation tools for evolving MIMO models and applications (single-user, multi-user, coordinated multipoint; large/massive systems; heterogeneous networks, relaying, ad-hoc networks; satellite communications; cognitive radio), as well as for increasingly more realistic channel and transceiver-imperfection models.

略歴

  • 2006 Ph.D., Queen's University, Kingston, Canada
  • 2006 Postdoc, Hanyang University, Seoul, Korea
  • 2008 BK21 Assistant Professor, Seoul National University, Korea
  • 2009 GCOE Assistant Professor, Hokkaido University, Sapporo
  • 2012 Assistant Professor, Kyung Hee University, Yongin, Korea
  • 2013 Research Fellow, University of Tokyo
  • 2014 CAREN Assistant Professor, Osaka University

連絡先

  • E-mail : constantin.siriteanu@ist.
  • Tel : 吹4527

4ケタの電話番号は、大阪大学での内線番号です。豊と表記されたものは(市外局番 06)6850、吹と表記されたものは(市外局番 06)6879 に続けてダイアルすることで大阪大学外からもダイアルインでかけることができます。 ただし,吹(内線)と表記されたものは,大代表(06)6879-5111にかけてください
メールアドレスは、末尾の"osaka-u.ac.jp"が省略されていますので、送信前に"osaka-u.ac.jp"を付加してください。