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http://dx.doi.org/10.7472/jksii.2022.23.3.13

Deep Learning-Based Prediction of the Quality of Multiple Concurrent Beams in mmWave Band  

Choi, Jun-Hyeok (Department of Computer Engineering, Sejong University)
Kim, Mun-Suk (Department of Computer Engineering, Sejong University)
Publication Information
Journal of Internet Computing and Services / v.23, no.3, 2022 , pp. 13-20 More about this Journal
Abstract
IEEE 802.11ay Wi-Fi is the next generation wireless technology and operates in mmWave band. It supports the MU-MIMO (Multiple User Multiple Input Multiple Output) transmission in which an AP (Access Point) can transmit multiple data streams simultaneously to multiple STAs (Stations). To this end, the AP should perform MU-MIMO beamforming training with the STAs. For efficient MU-MIMO beamforming training, it is important for the AP to estimate signal strength measured at each STA at which multiple beams are used simultaneously. Therefore, in the paper, we propose a deep learning-based link quality estimation scheme. Our proposed scheme estimates the signal strength with high accuracy by utilizing a deep learning model pre-trained for a certain indoor or outdoor propagation scenario. Specifically, to estimate the signal strength of the multiple concurrent beams, our scheme uses the signal strengths of the respective single beams, which can be obtained without additional signaling overhead, as the input of the deep learning model. For performance evaluation, we utilized a Q-D (Quasi-Deterministic) Channel Realization open source software and extensive channel measurement campaigns were conducted with NIST (National Institute of Standards and Technology) to implement the millimeter wave (mmWave) channel. Our simulation results demonstrate that our proposed scheme outperforms comparison schemes in terms of the accuracy of the signal strength estimation.
Keywords
mmWave; 802.11ay; beamforming; MU-MIMO; deep learning;
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Times Cited By KSCI : 4  (Citation Analysis)
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