Abstract
NOMA is a new type of multiple access technology proposed by NTT DOCOMO to improve spectral efficiency and system throughput and to be compatible with existing communication network architectures. In the NOMA downlink network, users in a cell are divided into several user groups, and the user grouping strategy has a large impact on the performance of the NOMA downlink network system. Therefore, in this paper, we study the existing user grouping algorithms in NOMA, compare their advantages and disadvantages, and propose a new user grouping algorithm based on greedy algorithm. Simulation results show that our algorithm performs well in reducing computational complexity and improving system performance.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Eddo, Z., Hojeij, M.R., Nour, C.A., et al.: Evaluation of intra-subband power allocation for a downlink non-orthogonal multiple access (NOMA) system. In: 2016 IEEE Globecom Workshops (GC Wkshps), pp. 1–7. IEEE Press, Washington (2016)
Saito, Y., Kishiyama, Y., Benjebbour, A., et al.: Non-orthogonal multiple access (NOMA) for cellular future radio access. In: 2013 IEEE 77th Vehicular Technology Conference (VTC Spring), pp. 1–5. IEEE Press, Dresden (2013)
Zhang, X., Gao, Q., Gong, C., et al.: User grouping and power allocation for NOMA visible light communication multi-cell networks. IEEE Commun. Lett. 10(99), 1–4 (2016)
Chen, S., Peng, K., Jin, H.: A suboptimal scheme for uplink NOMA in 5G systems. In: 2015 International Wireless Communications and Mobile Computing Conference (IWCMC), pp. 1429–1434. IEEE Press, Dubrovnik (2015)
Ali, M.S., Tabassum, H., Hossain, E.: Dynamic user clustering and power allocation for uplink and downlink non-orthogonal multiple access (NOMA) systems. IEEE Access 4(12), 6325–6343 (2016)
Zhang, H., Zhang, D.K., Meng, W.X., et al.: User pairing algorithm with SIC in non-orthogonal multiple access system. In: 2016 IEEE International Conference on Communications (ICC), pp. 1–6. IEEE Press, Kuala Lumpur (2016)
Ali, M.S., Hossain, E., Kim, D.I.: Non-orthogonal multiple access (NOMA) for downlink multiuser MIMO systems: user clustering, beamforming and power allocation. IEEE Access 5(99), 1–13 (2017)
Liu, S., Zhang, C., Liu, G.M.: User selection and power schedule for downlink non-orthogonal multiple access (NOMA) system. In: Proceedings of 2015 Communication Workshop (ICCW), pp. 2561–2565. IEEE, London (2015)
Acknowledgments
This work was supported by Hainan Provincial Key R. & D. Projects of China (ZDYF2016010 and ZDYF2018012) and the National Natural Science Foundation of China (No. 61661018).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Guo, YX., Li, H. (2019). Research on User Grouping Strategy in NOMA Downlink Networks. In: Liang, Q., Liu, X., Na, Z., Wang, W., Mu, J., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2018. Lecture Notes in Electrical Engineering, vol 515. Springer, Singapore. https://doi.org/10.1007/978-981-13-6264-4_108
Download citation
DOI: https://doi.org/10.1007/978-981-13-6264-4_108
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-6263-7
Online ISBN: 978-981-13-6264-4
eBook Packages: EngineeringEngineering (R0)