Throughput performance of adaptive frequency offset selection for amplify-and-forward relay in multiuser environment

Takayuki Shiba, Yukitoshi Sanada

研究成果: Conference contribution

抄録

This paper proposes an adaptive frequency offset scheme in an amplify-and-forward (AF) relay station (RS). When the RSs are at a cell edge, frequency resources are partially assigned between them and a base station (BS) to avoid inter-cell interference. On the other hand, the RS is expected to use a higher frequency band for transmission in the next generation mobile communication system. The whole frequency band can be used in the transmission between the RS and a mobile station (MS) while the RS uses only the restricted bandwidth in the low frequency band. In the proposed AF relay scheme, the frequency of the signal from the RS is shifted adaptively in accordance with the frequency response of the channel between the RS and the MS. In this scheme, the relay transmission is assumed to use a wider bandwidth between the RS and the MS than that between the BS and the RS. By making use of the better frequency response between the RS and the BS owing to the adaptive frequency offset scheme the total throughput of the cell improves. It is shown with numerical results obtained through computer simulation that for a two-user case the proposed scheme improves the total throughput by about 1.2 to 1.3 times with proportional fairness scheduling especially at a low Eb/N0 condition.

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 20
イベント87th IEEE Vehicular Technology Conference, VTC Spring 2018 - Porto, Portugal
継続期間: 2018 6 32018 6 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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