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Mmwave massive MIMO: one joint beam selection combining cuckoo search and ant colony optimization.

Zhu, C., Ji, Q., Guo, X. and Zhang, J., 2023. Mmwave massive MIMO: one joint beam selection combining cuckoo search and ant colony optimization. EURASIP Journal on Wireless Communications and Networking, 2023, 65.

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DOI: 10.1186/s13638-023-02272-1

Abstract

In order to degrade the inter-user interference caused by the same beam selected for different users in mmWave massive MIMO systems, this paper proposes a joint beam selection combining cuckoo search (CS) and ant colony optimization (ACO) (referred to as CSACO). Differently from the existing interference-aware beam selection, a candidate beam set (CBS) for all users is created according to the power distribution of the beamspace channel, thereby all users can be classified into non-interfering users (NIUs) and interfering users (IUs), and NIUs will be assigned the beams with large power directly, while for IUs, the beams are selected by the CSACO; in the proposed CSACO, all beams for IUs are regarded as an optimizable individual, which is continuously evolved towards the direction of sum-rate maximization. Simulation results verify that the proposed beam selection can obtain the higher sum-rate and energy efficiency compared with the existing ones.

Item Type:Article
ISSN:1687-1472
Uncontrolled Keywords:Millimeter wave MIMO; Beam selection; Inter-user interference
Group:Faculty of Science & Technology
ID Code:38852
Deposited By: Symplectic RT2
Deposited On:08 Aug 2023 12:37
Last Modified:03 Jul 2024 08:41

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