[논문]Alternating Beamforming With Intelligent Reflecting Surface Element Allocation

Cho, Hyesang; Choi, Junil

doi:10.1109/lwc.2021.3062992

[해외논문] Alternating Beamforming With Intelligent Reflecting Surface Element Allocation 원문보기

IEEE wireless communications letters, v.10 no.6, 2021년, pp.1232 - 1236

Cho, Hyesang (Korea Advanced Institute of Science and Technology, School of Electrical Engineering, Daejeon, South Korea) , Choi, Junil (Korea Advanced Institute of Science and Technology, School of Electrical Engineering, Daejeon, South Korea)

Abstract ▼ AI-Helper

Intelligent reflecting surface (IRS) has become a promising technology to aid next generation wireless communication systems. In this letter, we develop an alternating beamforming technique with a novel concept of IRS element allocation for multiple-input multiple-output systems when a base station supports multiple single antenna users aided with a single IRS. Specifically, we allocate each IRS element separately to each user, thus, in the beamforming stage allowing the IRS element only consider a single user at a time. In result to this separation, the complexity is vastly decreased. The proposed beamforming technique tries to maximize the minimum rate of all users with minimal complexity. In the numerical results, we show that the proposed technique is comparable to the convex optimization-based benchmark with sufficiently less complexity.

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