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Joint Single-and Multi-Beam Angle-Domain NOMA for Hybrid MmWave MIMO Systems

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Abstract

In this paper, we propose a joint single-beam (SB) and multi-beam (MB) non-orthogonal multiple access (NOMA) scheme with limited feedback for the hybrid millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems. This scheme provides combined advantages with respect to the previous works: i) hybrid beamforming to restrain the number of radio-frequency chains, ii) joint SB-and MB-NOMA to benefit from NOMA multiuser diversity, whatever the load of the cell and the users' position are, iii) limited feedback, with the only knowledge of users' angle information. Specifically, we propose two schemes: the former gives a significant sumrate performance compared to digital beamforming, while the latter reduces the number of active radio-frequency chains, i.e., the energy consumption. Meanwhile, we develop a lowcomplex two-stage user grouping strategy by exploiting the joint potential of SB-and MB-NOMA schemes according to the users' angle. Numerical results verify the performance of the proposed schemes using the stochastic mmWave channel model NYUSIM from New York University.
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Dates and versions

hal-03408940 , version 1 (29-10-2021)

Identifiers

  • HAL Id : hal-03408940 , version 1

Cite

Israa Khaled, Charlotte Langlais, Ammar El Falou, Michel Jezequel, Bachar Elhasssan. Joint Single-and Multi-Beam Angle-Domain NOMA for Hybrid MmWave MIMO Systems. Workshop on Smart Antennas (WSA), Nov 2021, Sophia-Antipolis, France. ⟨hal-03408940⟩
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