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- W4385989164 abstract "Intelligent reflecting surface (IRS) is a promising technology for beyond-5G wireless communication systems. However, the energy demand of IRS is often overlooked in existing works, leading to performance issues in practical scenarios. To address this issue, this paper proposes an operating model based on time switching (TS) protocol for an IRS-assisted multi-user multiple-input single-output (MISO) system, which can provide energy for IRS through wireless power transfer (WPT) technology. The system throughput maximization problem is addressed to improve performance. Specifically, a two-stage algorithm combined with alternating optimization, denoted as TAO, is proposed. To further improve the optimization process in large-size IRS scenarios, an improved deep deterministic policy gradient (DDPG) method combined with TAO, denoted as TAO-DDPG, is also proposed. Numerical results demonstrate that the proposed TAO-DDPG algorithm achieves similar performance to TAO while greatly reducing the optimization time." @default.
- W4385989164 created "2023-08-19" @default.
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- W4385989164 date "2023-11-01" @default.
- W4385989164 modified "2023-10-14" @default.
- W4385989164 title "Sum throughput optimization of wireless powered IRS-assisted multi-user MISO system" @default.
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- W4385989164 doi "https://doi.org/10.1016/j.comnet.2023.109984" @default.
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