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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 26 - 33 (8page)
- DOI
- 10.7840/kics.2020.45.1.26
이용수
초록· 키워드
오류제보하기
In non-orthogonal multiple access (NOMA), successive interference cancellation (SIC) is the essential foundation for NOMA techniques. This paper derives the optimal performance for NOMA with 4-ary pulse amplitude modulation (4PAM) under Rayleigh fading channels. Such performances are calculated by first deriving the maximum-likelihood (ML) performance, conditioned on the channel gain, and then averaging the conditioned performance over the channel gain. As opposed to the standard SIC, which is by nature the hard-decision based SIC, we present the optimal ML performance, which can be viewed as the soft-decision based SIC, namely, the optimal soft SIC, because it is general that the soft-decision performance is better than the hard-decision performance. It is shown that the severe performance degradation of the optimal soft SIC can be mitigated, if we avoid the power allocation factors about 10%, 20%, 30%, 50%, 70%, 80%, 90%, under Rayleigh fading channel environments. In future researches, it is meaningful to achieve the perfect SIC performance for NOMA, because the NOMA capacity guarantees the perfect SIC performance for one of two users, regardless of the power allocation, i.e., for the entire range of the power allocation factor, from 0% to 100%.
목차
ABSTRACT
Ⅰ. Introduction
Ⅱ. System and Channel Model
Ⅲ. 4PAM NOMA Performance Derivation
Ⅳ. Results and Discussions
Ⅴ. Conclusion
References
참고문헌 (9)
참고문헌 신청
Y. Saito, Y. Kishiyama, A. Benjebbour, T. Nakamura, A. Li, and K. Higuchi, “Nonorthogonal multiple access (NOMA) for cellular future radio access,” in Proc. IEEE 77th VTC Spring, pp. 1-5, 2013.
Z. Ding, P. Fan, and H. V. Poor, “Impact of user pairing on 5G nonorthogonal multipleaccess downlink transmissions,” IEEE Trans. Veh. Technol., vol. 65, no. 8, pp. 6010-6023, Aug. 2016.
S. R. Islam, J. M. Kim, and K. S. Kwak, “On non-orthogonal multiple access (NOMA) in 5G Systems,” J. KICS, vol. 40, no. 12, pp. 2549-2558, Dec. 2015.
M. H. Lee, V. C. M. Leung, and S. Y. Shin, “Dynamic bandwidth allocation of NOMA and OMA for 5G,” J. KICS, vol. 42, no. 12, pp. 2383-2390, Dec. 2017.
M. B. Uddin, M. F. Kader, A. Islam, and S. Y. Shin, “Power optimization of NOMA for multi-cell networks,” J. KICS, vol. 43, no. 7, pp. 1182-1190, Jul. 2018.
Z. Ding, P. Fan, and H. V. Poor, “Impact of user pairing on 5G nonorthogonal multipleaccess downlink transmissions,” IEEE Trans. Veh. Technol., vol. 65, no. 8, pp. 6010-6023, Aug. 2016.
S. R. Islam, J. M. Kim, and K. S. Kwak, “On non-orthogonal multiple access (NOMA) in 5G Systems,” J. KICS, vol. 40, no. 12, pp. 2549-2558, Dec. 2015.
M. H. Lee, V. C. M. Leung, and S. Y. Shin, “Dynamic bandwidth allocation of NOMA and OMA for 5G,” J. KICS, vol. 42, no. 12, pp. 2383-2390, Dec. 2017.
M. B. Uddin, M. F. Kader, A. Islam, and S. Y. Shin, “Power optimization of NOMA for multi-cell networks,” J. KICS, vol. 43, no. 7, pp. 1182-1190, Jul. 2018.
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