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 language | English |
|---|---|
| Article number | 7022974 |
| Journal | Unknown Journal |
| Volume | 2015-January |
| Issue number | January |
| DOIs | |
| Publication status | Published - 2014 |
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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 journal › Article
}
TY - JOUR
T1 - LLR calculation based on interference cancelation for non-orthogonal multiple access
AU - Chida, Yuji
AU - Sanada, Yukitoshi
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84988234183&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84988234183&partnerID=8YFLogxK
U2 - 10.1109/VTCSpring.2014.7022974
DO - 10.1109/VTCSpring.2014.7022974
M3 - Article
AN - SCOPUS:84988234183
VL - 2015-January
JO - Mathematical Social Sciences
JF - Mathematical Social Sciences
SN - 0165-4896
IS - January
M1 - 7022974
ER -