International Journal of Internet, Broadcasting and Communication

The Institute of Internet, Broadcasting and Communication (한국인터넷방송통신학회)
권호 표지
DOI QR코드

DOI QR Code

Impact of Channel Estimation Errors on BER Performance of Single-User Decoding NOMA System

  • Received : 2020.07.29
  • Accepted : 2020.08.13
  • Published : 2020.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

In the fifth generation (5G) and beyond 5G (B5G) mobile communication, non-orthogonal multiple access (NOMA) has attracted great attention due to higher spectral efficiency and massive connectivity. We investigate the impacts of the channel estimation errors on the bit-error rate (BER) of NOMA, especially with the single-user decoding (SUD) receiver, which does not perform successive interference cancellation (SIC), in contrast to the conventional SIC NOMA scheme. First, an analytical expression of the BER for SUD NOMA with channel estimation errors is derived. Then, it is demonstrated that the BER performance degrades severely up to the power allocation less than about 20%. Additionally, we show that for the fixed power allocation of 10% in such power allocation range, the signal-to-noise (SNR) loss owing to channel estimation errors is about 5 dB. As a consequence, the channel estimation error should be considered for the design of the SUD NOMA scheme.

Keywords

References

  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 Vehicular Technology Conference (VTC Spring), pp. 1-5, 2013. DOI: https://doi.org/10.1109/VTCSpring.2013.6692652
  2. Z. Ding, P. Fan, and H. V. Poor, "Impact of user pairing on 5G nonorthogonal multiple-access downlink transmissions," IEEE Trans. Veh. Technol., vol. 65, no. 8, pp. 6010-6023, Aug. 2016. DOI: https://doi.org/10.1109/TVT.2015.2480766
  3. Z. Ding, X. Lei, G. K. Karagiannidis, R. Schober, J. Yuan, and V. Bhargava, "A survey on non-orthogonal multiple access for 5G networks: Research challenges and future trends," IEEE J. Sel. Areas Commun., vol. 35, no. 10, pp. 2181-2195, Oct. 2017. DOI: https://doi.org/10.1109/JSAC.2017.2725519
  4. C. K. Kim, "Performance improvement of MIMO-OFDMA system with beamformer," International Journal of Internet, Broadcasting and Communication (IJIBC), vol. 11, no. 1, pp. 60-68, Feb. 2019. DOI: http://dx.doi.org/10.7236/IJIBC.2019.11.1.60
  5. C. K. Kim, "Performance improvement of MIMO MC-CDMA system with multibeamforming," International Journal of Internet, Broadcasting and Communication (IJIBC), vol. 11, no. 2, pp. 76-83, May 2019. DOI: http://dx.doi.org/10.7236/IJIBC.2019.11.2.76
  6. K. Chung, "On practical issue of non-orthogonal multiple access for 5G mobile communication," International Journal of Internet, Broadcasting and Communication (IJIBC), vol. 12, no. 1, pp. 67-72, Feb. 2020. DOI: http://dx.doi.org/10.7236/IJIBC.2020.12.1.67
  7. K. Chung, "On Additive Signal Dependent Gaussian Noise Channel Capacity for NOMA in 5G Mobile Communication," International Journal of Internet, Broadcasting and Communication (IJIBC), vol. 12, no. 2, pp. 37-44, Feb. 2020. DOI: http://dx.doi.org/10.7236/IJIBC.2020.12.2.37
  8. M. Qiu, Y.-C. Huang, and J. Yuan, "Downlink non-orthogonal multiple access without SIC for block fading channels: an algebraic rotation approach," IEEE Trans. Wireless Commun., vol. 18, no. 8, pp. 3903-3918, Aug. 2019. DOI: http://dx.doi.org/10.1109/TWC.2019.2919292
  9. M. Qiu, Y.-C. Huang, J. Yuan and C.-L. Wang, "Lattice-partition-based downlink non-orthogonal multiple access without SIC for slow fading channels," IEEE Trans. Commun., vol. 67, no. 2, pp. 1166-1181, Feb. 2019. DOI: http://dx.doi.org/10.1109/TCOMM.2018.2878847
  10. Z. Dong, H. Chen, J. Zhang and L. Huang, "On non-orthogonal multiple access with finite-alphabet inputs in Zchannels," IEEE J. Sel. Areas Commun., vol. 35, no. 12, pp. 2829-2845, Dec. 2017. DOI: http://dx.doi.org/10.1109/JSAC.2017.2724619
  11. Z. Dong, H. Chen, J. Zhang, L. Huang and B. Vucetic, "Uplink non-orthogonal multiple access with finite-alphabet inputs," IEEE Trans. Wireless Commun., vol. 17, no. 9, pp. 5743-5758, Sept. 2018. DOI: http://dx.doi.org/10.1109/TWC.2018.2849413