Wireless Technology Terms, Glossary and Dictionary
SFN: Single Frequency Network
A single-frequency network (SFN) is a broadcast network where several transmitters simultaneosly send the same signal over the same frequency channel. Analogue FM and AM radio broadcast networks as well as digital broadcast networks can operate in this manner. The aim of SFNs is efficient utilization of the radio spectrum, allowing a higher number of radio and TV programs in comparison to traditional multi-frequency network (MFN) transmission. An SFN may also increase the coverage area and decrease the outage probability in comparison to an MFN since the total received signal strength may increase to positions midway between the transmitters.