Optimized Dual-Attention Convolutional Neural Networks for Hybrid Beamforming and High-Precision Channel Estimation in 5G Massive MIMO Wireless Communications Systems. - Sandeep Prabhu; Humaira Nishat; Shreenidhi Krishnamurthy Subramaniyan; Harishchander Anandaram; Shargunam Selvam (Internet Technol. Lett., 2025)