AFH

/ˌeɪ ɛf ˈeɪtʃ/

n. "Dynamic channel blacklist adaptation for FHSS systems avoiding interfered frequencies in real-time."

TDD

/ˌtiː diː ˈdiː/

n. "Single-frequency duplexing alternating uplink/downlink time slots unlike FDD paired spectrum."

FHSS

/ˌɛf eɪtʃ ɛs ɛs/

n. "Pseudo-random carrier frequency switching spreading narrowband signal across wide spectrum for Bluetooth anti-jamming."