Enhancing resilience in cell-free massive MIMO networks via 2D-DOA-based zero-forcing precoding under pilot contamination. - Mohammed Balfaqih; Ehab Ali; Zain Balfagih; Mohamed Alrayes; Fawaz Al-Hazemi; Sabri Saeed (EURASIP J. Wirel. Commun. Netw., 2025)