LLR calculation based on interference cancelation with channel estimation error for non-orthogonal multiple access

Yuji Chida, Yukitoshi Sanada

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

Non-orthogonal multiple access improves spectral efficiency through sharing the same frequency resource with multiple wireless terminals. In previous researches, it has been shown that a log likelihood ratio (LLR) calculated from a signal on the sharing spectrum should be masked to zero if the power of an interference signal is stronger than that of a desired signal. This implies that the spectrum is not shared by the terminal receiving the weaker signal. In this paper, a spectrum sharing scheme with the use of interference cancelation and LLR calculation on the basis of the probability density function of residual interference is proposed. The residual interference remains owing to a channel estimation error and the LLR calculation takes that into account. Numerical results obtained thorough computer simulation show that the proposed scheme improves the performance by 1 dB with ideal channel estimation and 2 dB with channel estimation error at the BER of 10-4 as compared to that with a conventional LLR calculation scheme.

本文言語English
ホスト出版物のタイトル2014 IEEE 80th Vehicular Technology Conference, VTC2014-Fall, Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479944491, 9781479944491
DOI
出版ステータスPublished - 2014 11 24
イベント80th IEEE Vehicular Technology Conference, VTC 2014-Fall - Vancouver, Canada
継続期間: 2014 9 142014 9 17

出版物シリーズ

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

Other

Other80th IEEE Vehicular Technology Conference, VTC 2014-Fall
国/地域Canada
CityVancouver
Period14/9/1414/9/17

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

フィンガープリント

「LLR calculation based on interference cancelation with channel estimation error for non-orthogonal multiple access」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル