Control overhead reduction method employing frequency correlation for MU-MIMO-OFDM THP with user scheduling

Yukiko Shimbo, Nobuhiro Hiruma, Hirofumi Suganuma, Fumiaki Maehara*

*この研究の対応する著者

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

This paper proposes a method for control overhead reduction by employing frequency correlation for MU-MIMO-OFDM THP with semi-orthogonal user selection (SUS). The feature of the proposed approach is to reduce the control overhead generated by subcarrier-based user selection results by limiting the sub-carriers according to the frequency correlation. The motivation behind this approach comes from the fact that the same user selection results could be applicable to neighboring subcarriers by increasing the frequency correlation. A simple theoretical formula containing a parameter for a power delay profile is adopted to facilitate the derivation of the frequency correlation. Frequency correlation is achieved by generating the power delay profile by averaging the channel state information (CSI) over multiple transmit antennas with the aid of MU-MIMO. Moreover, our efficient method, which ensures the benefit of ordering by reusing the SUS results for the ordering calculation, is adopted to coordinate SUS and THP ordering. The effectiveness of the proposed method is demonstrated in terms of both system capacity and control overhead reduction by comparing it with the subcarrier-based approach.

本文言語English
ホスト出版物のタイトル2018 IEEE 87th Vehicular Technology Conference, VTC Spring 2018 - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ページ1-5
ページ数5
ISBN(電子版)9781538663554
DOI
出版ステータスPublished - 2018 7月 20
イベント87th IEEE Vehicular Technology Conference, VTC Spring 2018 - Porto, Portugal
継続期間: 2018 6月 32018 6月 6

出版物シリーズ

名前IEEE Vehicular Technology Conference
2018-June
ISSN(印刷版)1550-2252

Other

Other87th IEEE Vehicular Technology Conference, VTC Spring 2018
国/地域Portugal
CityPorto
Period18/6/318/6/6

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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