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Non-Orthogonal Multiple Access Based On Hybrid Beamforming For Mmwave Systems, Mojtaba Ahmadi Almasi, Hani Mehrpouyan
Non-Orthogonal Multiple Access Based On Hybrid Beamforming For Mmwave Systems, Mojtaba Ahmadi Almasi, Hani Mehrpouyan
Electrical and Computer Engineering Faculty Publications and Presentations
This paper aims to study the utilization of non-orthogonal multiple access (NOMA) in hybrid beamforming (HB) multiuser systems, called HB-NOMA, to serve a large number of mobile users. First, a sum-rate expression for the HB-NOMA problem is formulated. Second, an effective algorithm is proposed to maximize the sum-rate. Then, a lower bound is derived under two cases: i) the angle between the effective channel vectors of the MU with the highest channel gain and other MUs located inside a cluster is zero (or close to it) which is denoted by perfect correlation, and ii) this angle is non-zero, which we …