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WCDMA Multi Evaluation Measurement
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
566
User Manual 1173.9657.02 ─ 11
3.2.5.4
ACLR Limits
The energy that spills outside the designated radio channel increases the interference
with adjacent channels and decreases the system capacity. The amount of unwanted
off-carrier energy is assessed by the out-of-band emissions (excluding spurious emis-
sions) that are specified in terms of the Adjacent Channel Leakage power Ratio
(ACLR) and the Spectrum Emission Mask.
The ACLR limits are defined in the configuration dialog.
Fig. 3-8: ACLR limit settings
For both power class 3 and power class 4 UE, the ACLR shall not exceed –32.2 dB at
frequencies ±5 MHz from the carrier (channels ±1) and –42.2 dB at frequencies ±10
MHz from the carrier (channels ±2). The limits must be met if the adjacent channel
power is larger than –50 dBm (absolute limit).
The table below lists the test requirements of specification 3GPP TS 34.121.
Characteristics
Refer to 3GPP TS 34.121, section...
Specified Limit
ACLR
5.10 Adjacent Channel Leakage power Ratio (ACLR)
5.10A Adjacent Channel Leakage power Ratio (ACLR)
with HS-DPCCH
5.10B Adjacent Channel Leakage power Ratio (ACLR)
with E-DCH
<–32.2 dB (channels ±1)
<–42.2 dB (channels ±2)
1)
Note 1) For compatibility with other R&S
CMW measurements, we define the ACLR
and the limits with a relative minus sign compared to the 3GPP specification.
ACLR values are available as absolute power levels (dBm) and as power levels rela-
tive to the carrier power (dB). The relative power levels are used to check relative lim-
its, the absolute power levels to check absolute limits. The absolute power levels are
derived from the relative power levels via a conversion procedure. For current values
the conversion is based on the current carrier power. For average and maximum val-
ues it is based on the average carrier power.
3.2.5.5
Spectrum Emission Mask
The spectrum emission mask complements the ACLR Limits. The limits are defined in
the configuration dialog.
General Description
深圳德标仪器
135-1095-0799