Page 660 - 5G Basics - Core Network Aspects

2 Transport aspects

PSD
(dBm/Hz)
PSD tr1

175 kHz

−80
See ITU-T G.993.2 Annex A, B, or C
−90

−97.5
−100

4 20 500 f tr1 Frequency
(kHz)
G.9700(14)_F7-3

Figure 7-3 – Low-frequency edge out-of-band LPM
Requirements for frequencies below 4 kHz are specified in Annexes A, B and C of [ITU-T G.993.2] for the
regions of North America, Europe and Japan, respectively.

PSD
(dBm/Hz)
f th

PSD tr2

−110

f tr2 Frequency
(MHz)
G.9700(14)_F7-4

Figure 7-4 – High-frequency edge out-of-band LPM

Table 7-4 – Parameters of low-frequency edge out-of-band LPM

ftr1 PSDtr1 Description
(MHz) (dBm/Hz)
PSD limit at transition frequency ftr1 drops from PSDtr1 to –80 dBm/Hz.
The PSD limit in the transition band shall be obtained by linear interpolation in dB over
linear frequency scale.
2 –65 The PSD limit between 4 and 20 kHz shall be obtained by linear interpolation in dB
over a log(f) scale.
Subcarriers below ftr1 shall not be used for transmission (neither data nor any auxiliary
information).

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