Reconfigurable intelligent surfaces: Channel characterization and modeling

no code implementations • 6 Jun 2022 • Jie Huang, Cheng-Xiang Wang, Yingzhuo Sun, Rui Feng, Jialing Huang, Bolun Guo, Zhimeng Zhong, Tie Jun Cui

Reconfigurable intelligent surfaces (RISs) are two dimensional (2D) metasurfaces which can intelligently manipulate electromagnetic waves by low-cost near passive reflecting elements.

Deep Transfer Learning Based Downlink Channel Prediction for FDD Massive MIMO Systems

1 code implementation • 27 Dec 2019 • Yuwen Yang, Feifei Gao, Zhimeng Zhong, Bo Ai, Ahmed Alkhateeb

Specifically, we develop the direct-transfer algorithm based on the fully-connected neural network architecture, where the network is trained on the data from all previous environments in the manner of classical deep learning and is then fine-tuned for new environments.

Meta-Learning Transfer Learning