Rohde & Schwarz R&S CMW-KM300, Руководство пользователя, Страница: 55 / 388

NB-IoT Signaling
R&S
®
CMW-KM300/-KS300
55 User Manual 1178.5689.02 ─ 06
Figure 2-29: DL power levels
NRS EPRE ....................................................................................................................55
NPDSCH, NPDCCH, NPBCH EPRE ............................................................................ 55
OCNG ........................................................................................................................... 55
AWGN ........................................................................................................................... 55
NRS EPRE
Defines the energy per resource element (EPRE) of the narrowband reference signal
(NRS). The NRS EPRE corresponds to the DL power averaged over all resource ele-
ments carrying the NRS within one subcarrier (15 kHz).
The power offset of the NPSS and the NSSS EPRE relative to the NRS EPRE is 0 dB.
Remote command:
CONFigure:NIOT:SIGN<i>:DL:NRSepre:LEVel
NPDSCH, NPDCCH, NPBCH EPRE
Displays the energy per resource element (EPRE) of the NPDSCH, NPDCCH and
NPBCH.
The power offset relative to the NRS EPRE is 0 dB for 1 antenna port, as defined in
3GPP TS 36.213, section 16.2.2.
OCNG
Enables or disables the OFDMA channel noise generator (OCNG). OCNG for NB-IoT
is defined in 3GPP TS 26.101, annex A.5.3.
If the checkbox is enabled, the OCNG signal is sent in all unused downlink subframes
and covers the entire channel bandwidth. OCNG is not used to fill partly used sub-
frames, only to fill unused subframes.
The EPRE for OCNG equals the NRS EPRE. The signal uses QPSK modulation and
contains uncorrelated pseudo random data.
Remote command:
CONFigure:NIOT:SIGN<i>:DL:OCNG
AWGN
Total level of the additional white Gaussian noise (AWGN) interferer in dBm/15 kHz
(the spectral density integrated across one subcarrier). The reference point for this
power setting is the RF output connector.
If the checkbox is enabled, the AWGN signal is added to the DL signal for the entire
channel bandwidth.
Remote command:
CONFigure:NIOT:SIGN<i>:DL:AWGN
GUI Reference
深圳德标仪器
135-1095-0799