Max-Min Fair Precoder Design and Power Allocation for MU-MIMO NOMA

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2021-06-01

Author

Yalcin, Ahmet Zahid
Cetin, Mustafa Kagan
Yüksel Turgut, Ayşe Melda

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In this correspondence, transmit precoders and their power allocation coefficients are designed jointly for a downlink non-orthogonal multiple access (NOMA) wireless communication system. The objective is to provide max-min fairness (MMF) among the strongest users in each group, while maintaining minimum target rates for all the other users. The proposed solutions are respectively based on semi-definite relaxation (SDR) and successive convex approximation (SCA) and on the minimum mean square error (MMSE) approaches. For the latter approach, a simplification is also suggested to lower complexity. It is shown that while rate-splitting (RS) has the best MMF rates, the low-complexity MMSE approach has the least complexity. Moreover, the SDR/SCA approach offers an excellent tradeoff between the two.

Subject Keywords

NOMA, Optimization, Base stations, Receivers, Downlink, Resource management, Complexity theory, Max-min fairness, mean square error, MIMO, MMSE, NOMA, precoder design, rate splitting, SDR, SCA

URI

https://hdl.handle.net/11511/96655

Journal

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY

DOI

https://doi.org/10.1109/tvt.2021.3077504

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

A. Z. Yalcin, M. K. Cetin, and A. M. Yüksel Turgut, “Max-Min Fair Precoder Design and Power Allocation for MU-MIMO NOMA,” IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, vol. 70, no. 6, pp. 6217–6221, 2021, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/96655.