Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
권호 표지
DOI QR코드

DOI QR Code

Channel Capacity for NOMA Weak Channel User and Capacity Region for NOMA with Gaussian Mixture Interference

  • Received : 2019.03.06
  • Accepted : 2019.11.25
  • Published : 2019.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

Non-orthogonal multiple access (NOMA) has been considered for the fifth generation (5G) mobile networks to provide high system capacity and low latency. We calculate the channel capacity for the weak channel user in NOMA and the channel capacity region for NOMA. In this paper, Gaussian mixture channel is compared to the additive white Gaussian noise (AWGN) channel. Gaussian mixture channel is modeled when we assume the practical signal modulation for the inter user interference, such as the binary phase shift keying (BPSK) modulation. It is shown that the channel capacity with BPSK inter user interference is better than that with Gaussian inter user interference. We also show that the channel capacity region with BPSK inter user interference is larger than that with Gaussian inter user interference. As a result, NOMA could perform better in the practical environments.

Keywords

JGGJB@_2019_v23n1_302_f0001.png 이미지

Fig. 1. Channel capacities of Gaussian mixture noise and Gaussian noise for the NOMA weal channel user.

JGGJB@_2019_v23n1_302_f0002.png 이미지

Fig. 2. Channel capacity regions of Gaussian mixture noise and Gaussian noise for NOMA.

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: 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, 2016. DOI: 10.1109/TVT.2015.2480766
  3. Y. Saito, A. Benjebbour, Y. Kishiyama, and T. Nakamura, "System-level performance evaluation of downlink non-orthogonal multiple access (NOMA)," Proceedings of Personal Indoor and Mobile Radio Communications (PIMRC), 2013. DOI: 10.1109/PIMRC.2013.6666209
  4. 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 Communications Magazine, vol. 53, no. 9, pp. 74-81, 2015. DOI: 10.1109/MCOM.2015.7263349
  5. C. E. Shannon, "A Mathematical Theory of Communication," The Bell System Technical Journal, vol. 27, no. 3, pp. 379-423, 1948. DOI: 10.1002/j.1538-7305.1948.tb01338.x

Cited by

  1. On Power of Correlated Superposition Coding in NOMA vol.24, pp.1, 2019, https://doi.org/10.7471/ikeee.2020.24.1.360