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Keywords = ACCPM

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19 pages, 778 KiB  
Article
Enhanced MIMO CSI Estimation Using ACCPM with Limited Feedback
by Ahmed Al-Asadi, Ibtesam R. K. Al-Saedi, Saddam K. Alwane, Hongxiang Li and Laith Alzubaidi
Sensors 2023, 23(18), 7965; https://doi.org/10.3390/s23187965 - 19 Sep 2023
Cited by 1 | Viewed by 1753
Abstract
Multiple Input and Multiple Output (MIMO) is a promising technology to enable spatial multiplexing and improve throughput in wireless communication networks. To obtain the full benefits of MIMO systems, the Channel State Information (CSI) should be acquired correctly at the transmitter side for [...] Read more.
Multiple Input and Multiple Output (MIMO) is a promising technology to enable spatial multiplexing and improve throughput in wireless communication networks. To obtain the full benefits of MIMO systems, the Channel State Information (CSI) should be acquired correctly at the transmitter side for optimal beamforming design. The analytical centre-cutting plane method (ACCPM) has shown to be an appealing way to obtain the CSI at the transmitter side. This paper adopts ACCPM to learn down-link CSI in both single-user and multi-user scenarios. In particular, during the learning phase, it uses the null space beamforming vector of the estimated CSI to reduce the power usage, which approaches zero when the learned CSI approaches the optimal solution. Simulation results show our proposed method converges and outperforms previous studies. The effectiveness of the proposed method was corroborated by applying it to the scattering channel and winner II channel models. Full article
(This article belongs to the Special Issue MIMO Technologies in Sensors and Wireless Communication Applications)
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