Rohde & Schwarz SMW-K144 - Multiple Access Schemes; NR Numerology

About the 5G New Radio Option
R&S
®
SMW-K144
13User Manual 1178.8013.02 ─ 06
●
Option 5G New Radio (R&S SMW-K144)
●
Frequency option (R&S SMW-B10x)
To play back a signal from a waveform file created by the simulation software
R&S WinIQSIM2, the corresponding R&S WinIQSIM2 digital standard option must be
installed.
For more information, see data sheet.
3.2 5G NR Numerology
5G NR signals can be transmitted in several frequency ranges. For each of the fre-
quency range, the 3GPP specifies the allowed subcarrier spacing (SCS) and the sup-
ported cyclic prefix (CP), see Table 3-1.
However, not all combinations of frequency range, SCS and CP are allowed. Moreover,
the 3GPP specification defines the allowed combinations indirectly, as the so called
numerology. A numerology is thus the combination of the SCS and the CP, where the
SCS is defined as follows:
Δf = 15 kHz * 2
μ
, with μ = 0 to 4.
Table 3-2: Supported combinations of SCS and CP per frequency range
μ
SCS,
kHz
(Δf)
Max.
channel
band-
width,
MHz
N
symbol
slot
N
slot
frames
N
sub-
frame
slot
Symbol
duration
μs
Nor-
mal
cyclic
prefix
(NCP)
Exten-
ded
cyclic
prefix
(ECP)
Sup-
por-
ted
for
data
Sup-
ported
for
syn-
chroni-
zation
FR1 FR2
0 15 50 14 10 1 66.67 x - x x x -
1 30 100 14 20 2 33.33 x - x x x -
2 60 100 (FR1)
200 (FR2)
14 (NCP)
12 (ECP)
40 4 16.67 x x x - x x
3 120 400 14 80 8 8.33 x - x x - x
4 240 - 14 160 16 4.17 x - - x - x
3.3 Multiple Access Schemes
5G NR supports two channel access methods for uplink signals, CP-OFDM and DFT-s-
OFDM (see Table 3-1). Depending on the use case, one or the other has advantages
over the other. For DFT-s-OFDM, an additional signal processing stage, transform pre-
coding, is applied. Transform precoding is the term for the digital Fourier transformation
(DFT) used in the 5G NR standard.
Multiple Access Schemes