SFTD (Space–Frequency Time Diversity) Space-Frequency Time Diversity (SFTD) is a technique used in wireless
SFP (small form-Factor pluggable Transceivers) Small Form-Factor Pluggable (SFP) transceivers are compact, hot-pluggable devices used
SFN (Single-Frequency Network (in general, see also MBSFN) or System Frame Number (in 3GPP).) SFN, in the context of wireless communication systems, stands for
SFI-RNTI (slot format indication RNTI) SFI-RNTI, which stands for Slot Format Indication Radio Network Temporary