140
3.3.2.12. Error Vector Magnitude (EVM) for CA (intra-band contiguous DL CA and UL CA) (6.5.2A.1-1)
3.3.2.12.1. MT8820C
This measurement item is not supported by the MT8820C.
Refere to Table 3.3–1.
3.3.2.12.2. MT8821C
This subsection describes UL measurement examples for intra–band measurement where (Modulation, RB) is
(QPSK, PartialRB), (QPSK, FullRB), (16QAM, PartialRB) or (16QAM, FullRB).
First example: PCC N
RB
= 100, SCC N
RB
= 50, N
RB_alloc
= 12, Modulation = QPSK
PCC and SCC RB allocations (L
CRB
@RB
start
) are P_18@0 and S_0@0, respectively
Second example: PCC N
RB
= 100, SCC N
RB
= 50, N
RB_alloc
= 100, Modulation = QPSK,
PCC and SCC RB allocations (L
CRB
@RB
start
) are P_100@0 and S_0@0 respectively
Third example: PCC N
RB
= 50, SCC N
RB
= 100, N
RB_alloc
= 12, Modulation = 16QAM
PCC and SCC RB allocations (L
CRB
@RB
start
) are P_12@0 and S_0@0, respectively
Fourth example: PCC N
RB
= 100, SCC N
RB
= 100, N
RB_alloc
= 100, Modulation = 16QAM
PCC and SCC RB allocations (L
CRB
@RB
start
) are P_100@0 and S_0@0, respectively
1. Execute MOD_AVG 20 to set the average count of Modulation Analysis to 20 times.
For Intra-band measurement, the Carrier Leakage Frequency Parameter must be set properly set before the start
of the measurement sequence. For more information, see Annex B.2.
[Carrier Leakage Frequency Setting]
2. Execute IBEM_CLFR CFR to set Carrier Leakge Frequency to at Carrier Frequency Center.
[(QPSK, PartialRB) measurements]
3. Execute TESTPRM TX_MAXPWR_Q_F to set Test Parameter to TX1 – Max. Power (QPSK/PartialRB).
4. Execute ULRMC_RB 12 to set Common Parameter - UL RMC – Number of RB to 12.
5. Execute ULRB_START 0 to set Common Parameter - UL RMC – Starting RB to 0.
6. Execute ULRMC_RB_SCC1 0 to set Common Parameter – SCC–1 – UL RMC – Number of RB to 0.
7. Execute ULRB_START_SCC1 0 to set Common Parameter – SCC–1 UL RMC – Starting RB to 0.
8. Execute SWP to measure Modulation Analysis.
9. Execute EVM? AVG (or EVM? AVG,PCC) to read the EVM measurement result.
10. Execute EVMPASS? (or EVMPASS? PCC) to check that the EVM Pass/Fail judgment is Pass.
11. Execute RSEVM? AVG (or RSEVM? AVG,PCC) to read the Reference Signal EVM measurement result.
12. Execute RSEVMPASS? (or RSEVMPASS? PCC) to check that the Reference Signal EVM Pass/Fail judgment is Pass.
13. Execute TESTPRM TX_M40DBM_Q_P to set Test Parameter to TX1 – EVM/IBE/LEAK @ –40 dBm (QPSK/PartialRB).
14. Execute steps 4 to 12.
[(QPSK, FullRB) measurements]
15. Execute TESTPRM TX_MAXPWR_Q_F to set Test Parameter toTX1 – Max. Power (QPSK/FullRB).
16. Execute ULRMC_RB_SCC1 0 to set Common Parameter – SCC-1 – UL RMC – Number of RB to 0.
17. Execute ULRB_START_SCC1 0 to set Common Parameter – SCC-1 UL RMC – Starting RB to 0.
18. Execute SWP to measure Modulation Analysis.
19. Execute EVM? AVG (or EVM? AVG,PCC) to read the EVM measurement result.
20. Execute EVMPASS? (or EVMPASS? PCC) to check that the EVM Pass/Fail judgment is Pass.
21. Execute RSEVM? AVG (or RSEVM? AVG,PCC) to read the Reference Signal EVM measurement result.
22. Execute RSEVMPASS? (or RSEVMPASS? PCC) to check that the Reference Signal EVM Pass/Fail judgment is Pass.
23. Execute TESTPRM TX_M40DBM_Q_F to set Test Parameter to TX1 – EVM/IBE/LEAK @ –40 dBm
(QPSK/FullRB).
24. Execute steps 16 to 22.
[(16QAM, PartialRB) measurements]
25. Execute TESTPRM TX_MAXPWR_16_P to set Test Parameter toTX1 – Max. Power (16QAM/PartialRB).
26. Execute steps 4 to 12.
27. Execute TESTPRM TX_M40DBM_16_P to set Test Parameter to TX1 – EVM/IBE/LEAK @ –40 dBm (16QAM/PartialRB).
28. Execute steps 4 to 12.
[(16QAM, FullRB) measurements]
29. Execute TESTPRM TX_MAXPWR_16_F to set Test Parameter toTX1 – Max. Power (16QAM/FullRB).
30. Execute steps 16 to 22.
31. Execute TESTPRM TX_M40DBM_16_F to set Test Parameter to TX1 – EVM @ –40 dBm (16QAM/FullRB).
32. Execute steps 16 to 22.
NOTE 1: The input Level may vary depending on the Carrier Frequency f under TX1 – EVM/IBE/LEAK @ –
40dBm (16QAM/FullRB) condition.
f ≤ 3.0GHz : –36.8 dBm ± 3.2dB
3.0GHz < f ≤ 4.2GHz : –36.5 dBm ± 3.5dB
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