Why do long-distance wireless video transmitters recommend cofdm advantage

COFDM, Multiplexage par répartition orthogonale de la fréquence codée
1. Requires much narrower bandwidth than analog’s
2. Resistant to multi-path
3. Robust signal in NLOS (hors ligne de vue)–Performing inside buildings, à travers les murs, and around corners
4. Error correction & strong encryption
5. High performances on aircraft, véhicules, ships
6. Performs well in high-speed moving transmission