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

2 引用 (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.

元の言語English
ホスト出版物のタイトルIEEE Vehicular Technology Conference
出版者Institute of Electrical and Electronics Engineers Inc.
ISBN(印刷物)9781479944491, 9781479944491
DOI
出版物ステータス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

Other

Other80th IEEE Vehicular Technology Conference, VTC 2014-Fall
Canada
Vancouver
期間14/9/1414/9/17

Fingerprint

Channel Estimation Error
Interference Cancellation
Log-likelihood Ratio
Multiple Access
Channel estimation
Spectrum Sharing
Interference
Signal interference
Probability density function
Spectral Efficiency
Channel Estimation
Sharing
Computer Simulation
Computer simulation
Imply
Numerical Results
Resources
Zero

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Applied Mathematics

これを引用

Chida, Y., & Sanada, Y. (2014). LLR calculation based on interference cancelation with channel estimation error for non-orthogonal multiple access. : IEEE Vehicular Technology Conference [6966038] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTCFall.2014.6966038

LLR calculation based on interference cancelation with channel estimation error for non-orthogonal multiple access. / Chida, Yuji; Sanada, Yukitoshi.

IEEE Vehicular Technology Conference. Institute of Electrical and Electronics Engineers Inc., 2014. 6966038.

研究成果: Conference contribution

Chida, Y & Sanada, Y 2014, LLR calculation based on interference cancelation with channel estimation error for non-orthogonal multiple access. : IEEE Vehicular Technology Conference., 6966038, Institute of Electrical and Electronics Engineers Inc., 80th IEEE Vehicular Technology Conference, VTC 2014-Fall, Vancouver, Canada, 14/9/14. https://doi.org/10.1109/VTCFall.2014.6966038
Chida Y, Sanada Y. LLR calculation based on interference cancelation with channel estimation error for non-orthogonal multiple access. : IEEE Vehicular Technology Conference. Institute of Electrical and Electronics Engineers Inc. 2014. 6966038 https://doi.org/10.1109/VTCFall.2014.6966038
Chida, Yuji ; Sanada, Yukitoshi. / LLR calculation based on interference cancelation with channel estimation error for non-orthogonal multiple access. IEEE Vehicular Technology Conference. Institute of Electrical and Electronics Engineers Inc., 2014.
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