Why do long-distance wireless video transmitters recommend cofdm advantage

COFDM, कोडित ऑर्थोगोनल फ्रीक्वेंसी डिवीजन मल्टीप्लेक्सिंग
1. Requires much narrower bandwidth than analog’s
2. Resistant to multi-path
3. Robust signal in NLOS (दृष्टि की गैर-रेखा)–Performing inside buildings, through walls, and around corners
4. Error correction & strong encryption
5. High performances on aircraft, वाहनों, जहाज
6. Performs well in high-speed moving transmission