1. Song, Z., Wang, X., Liu, Y., & Zhang, Z. (2019). Joint spectrum resource allocation in NOMA-based cognitive radio network with SWIPT. IEEE Access, 7, 89594–89603.
2. Kim, N.S. (2019). Cooperative overlay cognitive radio NOMA network with channel errors and imperfect SIC. International Journal of Intelligent Engineering and Systems, 12(5).
3. Zhang, Y., Dong, Y., Wang, L., Liu, J., Peng, Y., & Feng, J. (2019). Outage capacity analysis for cognitive non-orthogonal multiple access downlink transmissions systems in the presence of channel estimation error. CMC, 60(1), 379–393.
4. Baidas, M. W., Alsusa, E., & Hamdi, K. A. (2019). Performance analysis and SINR-based power allocation strategies for downlink NOMA networks. IET Research Journals, 1–13.
5. Bater, J., Tan, H.-P., Brown, K. N., & Doyle, L. (2007). Modelling interference temperature constraints for spectrum access in cognitive radio networks. In 2007 IEEE Int. Conf. Commun. (ICC) (pp. 6493–6498).