Page 595 - 5G Basics - Core Network Aspects

Transport aspects 2

Optical transceiver Optical transceiver
Rightward Rightward
RF-band RF-band
Rightward RF-band subcarrier E/O Analog RoF O/E subcarrier RF-band Rightward
RF signal filter converter converter filter RF signal
Leftward Fibre-optic Leftward
RF-band MUX/DEMUX link MUX/DEMUX RF-band
Leftward RF-band subcarrier O/E E/O subcarrier RF-band Leftward
RF signal filter converter converter filter RF signal
Analog optical
interfaces
a)
Rightward Optical transceiver Optical transceiver Rightward
IF-band IF-band
Rightward IF-to-RF subcarrier E/O Analog RoF O/E subcarrier IF-to-RF Rightward
RF signal converter converter converter converter RF signal
Leftward Fibre-optic Leftward
IF-band MUX/DEMUX link MUX/DEMUX IF-band
Leftward RF-to-IF subcarrier O/E E/O subcarrier RF-to-IF Leftward
RF signal converter converter converter converter RF signal
Analog optical
interfaces
Reference frequency Reference frequency
for up/down convertion b) for up/down convertion
Rightward Optical transceiver Optical transceiver Rightward
I/Q baseband I/Q baseband
Rightward RF-to-I/Q signals E/O Analog RoF O/E signals I/Q-to-RF Rightward
RF signal converter converter converter converter RF signal
Leftward Fibre-optic Leftward
I/Q baseband MUX/DEMUX link MUX/DEMUX I/Q baseband
Leftward I/Q-to-RF signals O/E E/O signals RF-to-I/Q Leftward
RF signal converter converter converter converter RF signal
Analog optical
interfaces
Reference frequency Reference frequency
for up/down convertion c) for up/down convertion
G Suppl.55(15)_F6-5

Figure 6-5 – Configuration examples for analogue relay transmission:
a) RF-band signal(s); b) IF-band signal(s); and c) I/Q baseband signals

Figure 6-6 – Configuration examples for digital relay transmission:
a) digitized RF-band signal(s); b) digitized IF-band signal(s);
and c) digitized I/Q baseband signals

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