LLR calculation based on interference cancelation for non-orthogonal multiple access

Yuji Chida, Yukitoshi Sanada

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Non-orthogonal multiple access improves spectral efficiency through sharing the same frequency resource with multiple wireless terminals. In the 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 on the basis of interference cancelation and a LLR calculation with the probability density function of residual interference is proposed. Numerical results obtained thorough computer simulation show that the proposed scheme improves the performance by 1 dB at the BER of 10-4 as compared to that of the conventional scheme.

Original languageEnglish
Article number7022974
JournalUnknown Journal
Volume2015-January
Issue numberJanuary
DOIs
Publication statusPublished - 2014

Fingerprint

Interference Cancellation
Log-likelihood Ratio
Multiple Access
Signal interference
Computer Simulation
Probability density function
interference
Spectrum Sharing
Computer simulation
Research
Interference
computer simulation
Spectral Efficiency
efficiency
Sharing
Imply
resources
Numerical Results
Resources
performance

ASJC Scopus subject areas

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

Cite this

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

In: Unknown Journal, Vol. 2015-January, No. January, 7022974, 2014.

Research output: Contribution to journalArticle

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