한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
권호 표지
DOI QR코드

DOI QR Code

상호작용 이동통신 사용자에 대한 비직교 다중접속 시스템의 BER 성능 향상: ML 검출 관점

Improved BER Performance of Non-Orthogonal Multiple Access System for Interactive Mobile Users: Maximum Likelihood Detection Perspective

  • 정규혁 (단국대학교 소프트웨어학과)
  • 투고 : 2020.08.20
  • 심사 : 2020.10.15
  • 발행 : 2020.10.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

5G 이동통신 네트워크에서, 비직교 다중접속은 채널 용량을 높일 수 있는 기술로 각광받고 있다. 비직교 다중접속에서는, 다수 사용자가 채널 자원을 공유하여 신호를 동시에 전송 가능하다. 최근, 강 채널에 대해, 상호 작용 이동통신 사용자의 성능이 비상호작용 이동통신 사용자 비해, 저하되는 연구가 보고되었다. 본 논문에서는, 이러한 문제를 해결하기 위해 ML 수신기를 제안한다. 먼저, ML 수신기의 BER의 폐쇄형 표현식을 유도하고, 이상적인 완벽한 SIC 수신기의 BER과 비교하여, ML 수신기의 BER이 향상되었음을 보여준다. 또한, 이론적인 분석에 기초한 모의실험을 진행하고 ML 수신기의 성능 우수성을 입증한다.

In the fifth generation (5G) mobile networks, non-orthogonal multiple access (: NOMA) has been considered as a promising technology, to increase the channel capacity. In NOMA, the multiple users share the channel resources and multiplex simultaneously. Recently, for the stronger channel user, it was reported that the bit-error rate (: BER) performance with interactive mobile users is degraded, compared to the BER of non-interactive users. In this paper, in order to improve such degraded BER performance, we propose the maximum-likelihood (: ML) receiver. First, the closed-form expression for the BER of the ML receiver is derived, and then it is shown that the BER of the ML receiver is improved, compared with the BER of the ideal perfect successive interference cancellation (: SIC) receiver. Additionally, based on the analytical expression, Monte Carlo simulations validates the above-mentioned results.

키워드

참고문헌

  1. Y. Saito, Y. Kishiyama, A. Benjebbour, T. Nakamura, A. Li, and K. Higuchi, "Non-orthogonal multiple access (NOMA) for cellular future radio access," in Proc. IEEE 77th Veh. Technol. Conf. (VTC Spring), Dresden, Germany, June 2013, pp. 1.5.
  2. Z. Ding, Y. Liu, J. Choi, Q. Sun, M. Elkashlan, C.-L. I, and H. V. Poor, "Application of non-orthogonal multiple access in LTE and 5G networks,'' IEEE Commun. Mag., vol. 55, no. 2, Feb. 2017, pp. 185-191. https://doi.org/10.1109/MCOM.2017.1500657CM
  3. M.-C. Yang, "An adaptive tone reservation scheme for PAPR reduction of OFDM signals," J. of the Korea Institute of Electronic Communication Sciences, vol. 14, no. 5, Oct. 2019, pp. 817-824.
  4. H.-J. Ahn and M.-C. Yang, "Analysis of Automatic Neighbor Relation Technology in Self Organization Networks of LTE," J. of the Korea Institute of Electronic Communication Sciences, vol. 14, no. 5, Oct. 2019, pp. 893-900.
  5. K. Zhang and H.-J. Suh, "An analysis of multiuser diversity technology in the MIMO-OFDM system," J. of the Korea Institute of Electronic Communication Sciences, vol. 14, no. 6, Dec. 2019, pp. 1121-1128. https://doi.org/10.13067/JKIECS.2019.14.6.1121
  6. L. Dai, B. Wang, Y. Yuan, S. Han, C.-L. I, and Z. Wang, "Non-orthogonal multiple access for 5G: Solutions, challenges, opportunities, and future research trends," IEEE Commun. Mag., vol. 53, no. 9, Sept. 2015, pp. 74-81. https://doi.org/10.1109/MCOM.2015.7263349
  7. Q. Wang, R. Zhang, L.-L. Yang, and L. Hanzo, "Non-orthogonal multiple access: A unified perspective," IEEE Wireless Commun., vol. 25, no. 2, Apr. 2018, pp. 10-16. https://doi.org/10.1109/mwc.2018.1700070
  8. D. Wan, M. Wen, F. Ji, H. Yu, and F. Chen, "Non-orthogonal multiple access for cooperative communications: Challenges, opportunities, and trends," IEEE Wireless Commun., vol. 25, no. 2, May 2018, pp. 109-117. https://doi.org/10.1109/MWC.2018.1700134
  9. M. Jain, N. Sharma, A. Gupta, D. Rawal, and P. Garg, "Performance analysis of NOMA assisted underwater visible light communication system," IEEE Wireless Commun. Lett., vol. 9, no. 8, Aug. 2020, pp. 1291-1294. https://doi.org/10.1109/LWC.2020.2988887
  10. Z. Sun, Y. Jing, and X. Yu, "NOMA design with power-outage tradeoff for two-user systems," IEEE Wireless Commun. Lett., vol. 9, no. 8, Aug. 2020, pp. 1278-1282. https://doi.org/10.1109/LWC.2020.2987992
  11. M. Aldababsa, C. Goztepe, G. K. Kurt, and O. Kucur, "Bit error rate for NOMA network," IEEE Commun. Lett., vol. 24, no. 6, June 2020, pp. 1188-1191. https://doi.org/10.1109/LCOMM.2020.2981024
  12. A.-A.-A. Boulogeorg, N. D. Chatzidiamantis, and G. K. Karagiannid, "Non-orthogonal multiple access in the presence of phase noise," IEEE Commun. Lett., vol. 24, no. 5, May 2020, pp. 1133-1137. https://doi.org/10.1109/LCOMM.2020.2978845
  13. K. Chung, "Optimal Detection for NOMA systems with correlated information sources of interactive mobile users," J. of the Korea Institute of Electronic Communication Sciences, vol. 15, no. 4, Aug. 2020, pp. 651-657. https://doi.org/10.13067/jkiecs.2020.15.4.651
  14. K. Chung, "On power of correlated superposition coding in NOMA," J. Institute of Korean Electrical and Electronics Engineers, vol. 24, no. 1, Mar. 2019, pp. 360-363.