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

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2021-06-01
Yalcin, Ahmet Zahid
Cetin, Mustafa Kagan
Yüksel Turgut, Ayşe Melda
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.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY

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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.