类别：
- FD
- FD
- FD-SS
- FDCT
- FDF
- FDL
- FDM
- FDP
- FDR
- FE
- FE
- FE-CDMA
- FEA
- FEAM
- FEC
- FEC
- FEC
- FECC-F
- FECN
- FED
- FEFO
- FER
- FER
- FERF
- FES
- FFH
- FFP
- FFP-TF
- FFPF
- FFPI
- FFRN
- FH
- FH
- FH
- FH-CDMA
- FHR
- FHSP
- FHSS
- FI
- FIC
- FICS
- FIFS
- FIM
- FIM/CM
- FIMS
- FIN
- FIU
- FLAG
- FLL
- FLM
- FM
- FM
- FM/FDMA
- FM/TDMA
- FMBS
- FMC
- FMD
- FMD
- FMD
- FMDI
- FMMS
- FMS
- FMS
- FMSR
- FMUX
- FN
- FNA
- FNA
- FNAE
- FNAS
- FNP
- FO
- FOA
- FOAN
- FOB
