Journal of Convergence for Information Technology (융합정보논문지)

Convergence Society for SMB (중소기업융합학회)
권호 표지
DOI QR코드

DOI QR Code

Impact of Channel Estimation Errors on SIC Performance of NOMA in 5G Systems

5G 시스템에서 비직교 다중접속의 SIC 성능에 대한 채널 추정 오류의 영향

  • 정규혁 (단국대학교 소프트웨어학과)
  • Received : 2020.07.31
  • Accepted : 2020.09.20
  • Published : 2020.09.28
Download PDF
⟨ Previous Next ⟩

Abstract

In the fifth generation (5G) networks, the mobile services require much faster connections than in the fourth generation (4G) mobile networks. Recently, as one of the promising 5G technologies, non-orthogonal multiple access (NOMA) has been drawing attention. In NOMA, the users share the frequency and time, so that the more users can be served simultaneously. NOMA has several superiorites over orthogonal multiple access (OMA) of long term evolution (LTE), such as higher system capacity and low transmission latency. In this paper, we investigate impact of channel estimation errors on successive interference cancellation (SIC) performance of NOMA. First, the closed-form expression of the bit-error rate (BER) with channel estimation errors is derived, And then the BER with channel estimation errors is compared to that with the perfect channel estimation. In addition, the signal-to-noise (SNR) loss due to channel estimation errors is analyzed.

5G 시스템에서는, 통신 서비스가 4G 통신보다 더욱 더 빠른 망 연결을 요구한다. 최근, 선도적인 5G 기술들 중 하나로 비직교 다중접속이 주목받고 있다. 비직교 다중접속에서는 사용자들이 주파수와 시간을 공유하여, 더 많은 사용자들이 동시에 서비스를 받을 수가 있다. LTE와 같은 직교 다중접속과 비교하면, 비직교 다중접속은 더 큰 시스템 용량과 초저 지연과 같은 장점을 가진다. 본 논문에서는 비직교 다중접속의 SIC에 채널 추정 오류가 미치는 영향을 고찰한다. 우선, 채널 추정 오류를 가지는 수신기의 폐쇄형 수식을 구한다. 그리고 채널 추정 오류의 BER를 완벽한 채널 추정의 BER과 비교한다, 또한, 채널 추정 오류로 발생하는 SNR 손실을 분석한다.

Keywords

References

  1. Z. Ding, Y. Liu, J. Choi, Q. Sun, M. Elkashlan, C.-L. I, & H. V. Poor. (2017). Application of non-orthogonal multiple access in LTE and 5G networks. IEEE Commun. Mag., 55(2), 185-191 DOI : 10.1109/MCOM.2017.1500657CM
  2. L. Dai, B. Wang & Y. Yuan, S. Han, C.-L. I & Z. Wang. (2015). Non-orthogonal multiple access for 5G: solutions, challenges, opportunities, and future research trends. IEEE Commun. Mag., 53(9), 74-81. DOI : 10.1109/MCOM.2015.7263349
  3. Y. Saito, Y. Kishiyama, A. Benjebbour, T. Nakamura, A. Li & K. Higuchi. (2013). Non-orthogonal multiple access (NOMA) for cellular future radio access. In 2013 IEEE 77th vehicular technology conference (VTC Spring) (pp. 1-5). IEEE.
  4. Q. Wang, R. Zhang, L. L. Yang & L. Hanzo. (2018). Non-orthogonal multiple access: a unified perspective. IEEE Wirel. Commun., 25(2), 10-16. DOI : 10.1109/MWC.2018.1700070
  5. D. Wan, M. Wen, F. Ji, H. Yu & F. Chen. (2018). Non-orthogonal multiple access for cooperative communications: Challenges, opportunities, and trends. IEEE Wireless Commun., 25(2), 109-117. DOI : 10.1109/MWC.2018.1700134
  6. M. Aldababsa, C. Göztepe, G. K. Kurt & O. Kucur. (2020). Bit error rate for NOMA network. IEEE Commun. Lett., 24(6), 1188-119. DOI : 10.1109/LCOMM.2020.2981024
  7. A. A. A. Boulogeorg, N. D. Chatzidiamantis & G. K. Karagiannid. (2020). Non-orthogonal multiple access in the presence of phase noise. IEEE Commun. Lett., 24(5), 1133-1137. DOI : 10.1109/LCOMM.2020.2978845
  8. L. Bariah, S. Muhaidat & A. Al-Dweik. (2019). Error Probability Analysis of Non-Orthogonal Multiple Access Over Nakagami-m Fading Channels. IEEE Trans. Commun., 67(2), 1586-1599. DOI : 10.1109/TCOMM.2018.2876867
  9. T. Assaf, A. Al-Dweik, M. E. Moursi & H. Zeineldin. (2019). Exact BER Performance Analysis for Downlink NOMA Systems Over Nakagami-m Fading Channels. IEEE Access, 7, 134539-134555. DOI : 10.1109/ACCESS.2019.2942113
  10. I. Lee & J. Kim. (2019). Average Symbol Error Rate Analysis for Non-Orthogonal Multiple Access With M-Ary QAM Signals in Rayleigh Fading Channels. IEEE Commun. Lett., 23(8), 1328-1331. DOI : 10.1109/LCOMM.2019.2921770
  11. B. Makki. K. Chitti. A. Behravan. & M. Alouini. (2020). A survey of NOMA: Current status and open research challenges. IEEE Open J. of the Commun. Society, 1, 179-189. DOI : 10.1109/OJCOMS.2020.2969899
  12. W. Wu. F. Zhou. R. Q. Hu. & B. Wang. (2020). Energy-efficient resource allocation for secure NOMA-enabled mobile edge computing networks. IEEE Trans. Commun, 68(1), 493-505. DOI : 10.1109/TCOMM.2019.2949994
  13. K. Chung. (2019). Performance analysis on non-perfect SIC in NOMA. J. KICS, 44(5), 855-858. DOI : 10.7840/kics.2019.44.5.855
  14. R. M. Christopher, & D. K. Borah. (2020). Physical layer security for weak user in MISO NOMA using directional modulation (NOMAD). IEEE Commun. Lett., 24(5), 956-960. DOI : 10.1109/LCOMM.2020.2975193
  15. Z. Ding, & H. V. Poor. (2020). A simple design of IRS-NOMA transmission. IEEE Commun. Lett., 24(5), 1119-1123. DOI : 10.1109/LCOMM.2020.2974196
  16. Y. Tian, X. Wang, Z. Wang, & Y. H. Kho. (2020). On the performance of mutual-aid NOMA strategy in cooperative networks. IEEE Commun. Lett., 24(2), 282-286. DOI : 10.1109/LCOMM.2019.2958073
  17. E. M. Almohimmah & M. T. Alresheedi. (2020). Error analysis of NOMA-based VLC systems with higher order modulation schemes. IEEE Access, 8, 2792-2803. DOI : 10.1109/ACCESS.2019.2962331