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Deep Learning Based Proactive Optimization for Mobile LiFi Systems With Channel Aging
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DOI：10.1109/TCOMM.2024.3366405.png)
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摘要
En 中文
This paper investigates the channel aging problem of mobile light-fidelity (LiFi) systems. In the LiFi physical layer, the majority of the optimization problems for mobile users are non-convex and require the use of dual decomposition or heuristics techniques. Such techniques are based on iterative algorithms, and often cause a high processing delay at the physical layer. Hence, the obtained solutions are rendered sub-optimal since the LiFi channels are evolving. In this paper, a proactive-optimization (PO) approach that can alleviate the LiFi channel aging problem is proposed. The core idea is to design a long-short-term-memory (LSTM) network that is capable of predicting posterior positions and orientations of mobile users, which can be then used to predict their channel coefficients. Consequently, the obtained channel coefficients can be exploited to derive near-optimal transmission-schemes prior to the intended service-time, which enables real-time service. Through various simulations, the performance of the designed LSTM model is evaluated in terms of prediction error and inference complexity, as well as its application in a practical LiFi optimization problem.
Keyword:
Light fidelity
Optimization
Three-dimensional displays
Estimation
Wireless communication
Aging
Channel estimation
LiFi
LSTM
mobile users
prediction
proactive optimization
random orientation
期刊
IF:
8.3
论文数:
1.2W
被引数:
3.6W
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