There are 3 repositories under mimo-ofdm topic.
MATLAB Code for MIMO-OFDM Wireless Communications with MATLAB | MIMO-OFDM无线通信技术及MATLAB实现
A simple example with how hybrid beamforming is employed at the transmit end of a massive MIMO communications system.
Channel Estimation for MIMO OFDM Systems (LSE& MMSE)
Source Code for Paper "Augmenting Channel Charting with Classical Wireless Source Localization Techniques"
A deep learning-based framework for joint log-likelihood ratio estimation and quantization in multi-antenna communications