Pioneer GEX-P900DAB Service Manual page 57

- What is SFN?
Single Frequency Network (SFN) functions in the same way as with Network Follow (NF) of RDS. The principle of SFN
uses the advantage of DAB that signals can be received for multipath having delay within the time of guide interval.
1) Different from FM, all transmitting antennas use the same frequency in SFN. Thus, completely muteless status can
be achieved in NF.
2) SFN receives frequency from several antennas simultaneously. Thus, network gain may be obtained by several dBs.
antenna 1 antenna 2
102.2MHz
FM system
Link
Viewing from the receiver, both SFN and mutipath behave in the same manner.
antenna 3
89.6MHz 106.8MHz
SFN
GEX-P900DAB
antenna 1 antenna 2
225MHz 225MHz
DAB system
Multipath
antenna 3
225MHz
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