CDMA2000 Measurements
R&S
®
CMW-KM8xx/-KS8xx
733
User Manual 1173.9511.02 ─ 12
Fig. 5-5: Code domain limit settings
5.2.6.3
Spectrum 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 Adjacent Channel Power (ACP). The ACP limits
for the individual offset frequencies are defined in the configuration dialog.
Fig. 5-6: Spectrum limit settings
The limits at the frequency offsets can be configured and the ACP measurements at
these offsets can be enabled. The limits can be configured as maximum absolute ACP
in dBm and the maximum ACP in dBc relative to carrier power.
Minimum requirements for off-carrier emissions are defined in 3GPP2 C.S0011, sec-
tion 4.5.1, "Conducted Spurious Emissions". The table below lists the requirements rel-
evant for the ACP limits for spreading rate 1.
Category
Frequency Range
Specified Limit
Spreading Rate 1, Band Class Group 450 and 800
885 kHz to 1.98 MHz
1.98 MHz to 4.00 MHz
≤ -42 dBm
≤ -54 dBm
Spreading Rate 1, Band Class Group 1900
1.25 MHz to 1.98 MHz
1.98 MHz to 4.00 MHz
≤ -42 dBm
≤ -50 dBm
The occupied bandwidth shows the width of the frequency range around the assigned
channel frequency which contains 95% of the total integrated power of the transmitted
spectrum. For Spreading Rate 1 the standard OBW should not exceed 1.48 MHz (see
3GPP2 C.S0010, Occupied Bandwidth).
General Description
深圳德标仪器
135-1095-0799
