AI Enlightens Wireless Communication:Analyses,Solutions and Opportunities on CSI Feedback

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In this paper,we give a systematic de-scription of the 1st Wireless Communication Artifi-cial Intelligence (AI) Competition (WAIC) which is hosted by IMT-2020(5G) Promotion Group 5G+AI Work Group.Firstly,the framework of full channel state information (F-CSI) feedback problem and its corresponding channel dataset are provided.Then the enhancing schemes for DL-based F-CSI feedback in-cluding i) channel data analysis and preprocessing,ii)neural network design and iii) quantization enhance-ment are elaborated.The final competition results composed of different enhancing schemes are pre-sented.Based on the valuable experience of 1st WAIC,we also list some challenges and potential study ar-eas for the design of AI-based wireless communica-tion systems.
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