[1] Ding Z, Lei X, Karagiannidis G K, et al.A Survey on Non-Orthogonal Multiple Access for 5G Networks: Research Challenges and Future Trends［J］.IEEE Journal on Selected Areas in Communications, 2017: 1.

[2] Higuchi K, Kishiyama Y.Non-Orthogonal Access with Random Beamforming and Intra-beam SIC for Cellular MIMO Downlink［C］//IEEE Vehicular Technology Conference.Las Vegas, NV, USA: IEEE, 2014: 1-5.

[3] Rusek F, Persson D, Lau B K, et al.Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays［J］. IEEE Signal Processing Magazine, 2012, 30(1): 40-60.

[4] 李钊, 戴晓琴, 陈柯宇, 等.非正交多址接入下行链路用户匹配与功率优化算法［J］.电子与信息学报, 2017, 39(8): 1804-1811.

[5] Wang C L, Chen J Y, Chen Y J.Power Allocation for a Downlink Non-Orthogonal Multiple Access System［J］. IEEE Wireless Communications Letters, 2016, 5(5): 532-535.

[6] Timotheou S, Krikidis I.Fairness for Non-Orthogonal Multiple Access in 5G Systems［J］.IEEE Signal Processing Letters, 2015, 22(10): 1647-1651.

[7] Guo J, Wang X, Yang J, et al.User Pairing and Power Allocation for Downlink Non-Orthogonal Multiple Access［C］//GLOBECOM Workshops.Singapore: IEEE, 2017: 5319-5332.

[8] 吴玉成, 刘阳, 潘怡瑾.下行多用户MIMO系统中低复杂度块对角化预编码算法［J］.工程科学与技术, 2012, 44(6): 116-119.

[9] Kim B, Lim S, Kim H, et al.Non-Orthogonal Multiple Access in a Downlink Multiuser Beamforming System Milcom［C］// Military Communications Conference.San Diego, CA, USA: IEEE, 2014: 1278-1283.

[10] Ayach O E, Rajagopal S, Abu-Surra S, et al.Spatially Sparse Precoding in Millimeter Wave MIMO Systems［J］.IEEE Transactions on Wireless Communications, 2014, 13(3): 1499-1513.