6.5 Transmitted signal quality

37.145-13GPPActive Antenna System (AAS) Base Station (BS) conformance testingPart 1: conducted conformance testingRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

6.5.1 General

The requirements apply per TAB connector unless otherwise stated differently.

The requirement applies during the transmitter ON period.

6.5.2 Frequency error

6.5.2.1 Definition and applicability

Frequency error is the measure of the difference between the actual AAS BS transmit frequency and the assigned frequency. The same source shall be used for RF frequency and data clock generation.

It is not possible to verify by testing that the data clock is derived from the same frequency source as used for RF generation. This may be confirmed by the manufacturer’s declaration.

6.5.2.2 Minimum Requirement

For AAS BS in MSR operation the minimum requirement is defined in TS 37.105 [6], clause 6.52.2.

For AAS BS in single RAT UTRA operation the minimum requirement is defined in TS 37.105 [6], clause 6.5.2.3.

For AAS BS in single RAT E-UTRA operation the minimum requirement is defined in TS 37.105 [6], clause 6.5.2.4.

6.5.2.3 Test purpose

The test purpose is to verify that frequency error is within the limit specified by the minimum requirement.

6.5.2.4 Method of test

Requirement is tested together with modulation quality test, as described in clause 6.5.4.

6.5.2.5 Test Requirements

6.5.2.5.1 UTRA FDD test requirement

The frequency error for every measured slot shall be between the minimum and maximum value specified in table 6.5.2.5.1-1.

Table 6.5.2.5.1-1: Frequency error test requirement

BS class	Accuracy
Wide Area BS	±(0.05 ppm + 12 Hz)
Medium Range BS	±(0.1 ppm + 12 Hz)
Local Area BS	±(0.1 ppm + 12 Hz)

NOTE: If the above Test Requirement differs from the Minimum Requirement then the Test Tolerance applied for this test is non-zero. The Test Tolerance for this test is defined in clause 4.1.2 and the explanation of how the Minimum Requirement has been relaxed by the Test Tolerance is given in annex C.

6.5.2.5.2 UTRA TDD test requirement

The frequency error for every measured slot shall be between the minimum and maximum value specified in table 6.5.2.5.2-1.

Table 6.5.2.5.2-1: Frequency error test requirement

BS class	Accuracy
Wide Area BS	±(0.05 ppm + 12 Hz)
Medium Range BS	±(0.1 ppm + 12 Hz)

6.5.2.5.3 E-UTRA and NR test requirement

The modulated carrier frequency of each E-UTRA or NR carrier configured by the AAS BS shall be accurate to within the accuracy range given in table 6.5.2.5.3-1 observed over a period of one subframe (1 ms).

Table 6.5.2.5.3-1: Frequency error test requirement

BS class	Accuracy
Wide Area BS	±(0.05 ppm + 12 Hz)
Medium Range BS	±(0.1 ppm + 12 Hz)
Local Area BS	±(0.1 ppm + 12 Hz)

6.5.3 Time alignment error

6.5.3.1 Definition and applicability

This requirement applies to frame timing in:

– UTRA single/multi-carrier transmissions and their combinations with MIMO or TX diversity.

– E-UTRA single/multi-carrier transmissions and their combinations with MIMO or TX diversity.

– E-UTRA carrier aggregation, with or without MIMO or TX diversity.

– NR single/multi-carrier transmissions, and their combinations with MIMO.

– NR carrier aggregation, with or without MIMO.

Frames of the UTRA/E-UTRA/NR signals present at the TAB connectors are not perfectly aligned in time. In relation to each other, the RF signals present at the transceiver array boundary may experience certain timing differences.

For a specific set of signals/transmitter configuration/transmission mode, the Time Alignment Error (TAE) is defined as the largest timing difference between any two different E-UTRA signals or any two different UTRA signals or any two different NR signals belonging to different TAB Connectors belonging to different transmitter groups at the transceiver array boundary, where transmitter groups are associated with the TAB connectors in the transceiver unit array corresponding to TX diversity (except NR), MIMO transmission, carrier aggregation, etc.

6.5.3.2 Minimum requirement

For AAS BS in MSR operation the minimum requirement is defined in TS 37.105 [6], clause 6.5.3.2.

For AAS BS in single RAT UTRA operation the minimum requirement is defined in TS 37.105 [6], clause 6.5.3.3.

For AAS BS in single RAT E-UTRA operation the minimum requirement is defined in TS 37.105 [6], clause 6.5.3.4.

6.5.3.3 Test purpose

To verify that the time alignment error is within the limit specified by the minimum requirement.

6.5.3.4 Method of test

6.5.3.4.1 Initial conditions

6.5.3.4.1.1 General test conditions

Test environment: normal; see annex B.2.

RF channels to be tested for single carrier: M; see clause 4.12.1.

6.5.3.4.1.2 UTRA FDD

Base Station RF Bandwidth positions to be tested for multi-carrier: B_RFBW, M_RFBW and T_RFBW; B_RFBW_T’_RFBW and B’_RFBW_T_RFBW in multi-band operation; see clause 4.12.1.

Refer to clause D.1.3 for a functional block diagram of the test set-up.

6.5.3.4.1.3 UTRA TDD

RF bandwidth positions to be tested for multi-carrier: M_RFBW in single band operation, see clause 4.12.1.

– For a TAB connectors declared to be capable of single carrier operation only, set the base station to transmit according to table 6.5.3.4.1.3-1 on one cell using MIMO.

– For a multi-carrier TAB connectors, set to transmit according to table 6.5.3.4.1.3-1 on all carriers configured using the applicable test configuration and corresponding power setting specified in clause 5.3.

Table 6.5.3.4.1.3-1: Parameters of the BS transmitted signal for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 6: transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
Time slots under test	TS0 and DwPTS
Spreading factor	16

6.5.3.4.1.4 E-UTRA and NR

RF bandwidth positions to be tested for multi-carrier and/or CA:

– M_RFBW in single-band operation, see clause 4.12.1;

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBW in multi-band operation, see clause 4.7.

6.5.3.4.2 Procedure

6.5.3.4.2.1 General procedure

TAB connectors to be tested are identified from the declared sets of TAB connector beam forming groups (see clause 4.10 D.6.58).

Connect two representative TAB connectors one from each of the declared groups to the measurement equipment according to annex D.1.3. Terminate any unused TAB connector(s).

Compliance is to be demonstrated between all pairs of TAB connectors beam forming groups, however it is not required to exhaustively measure the time alignment error between every combination of pairs of representative TAB connectors. Compliance can be demonstrated by comparison of a reduced set of representative measurement results.

6.5.3.4.2.2 UTRA FDD procedure

1) If the AAS BS supports TX diversity or MIMO, set the TAB connectors to transmit TM1, clause 4.12.2, at manufacturer’s declared rated output power, P_Rated,c,TABC on one cell using TX diversity or MIMO.

2) Measure the time alignment error between the signals using the P-CPICH on one of the representative TAB connector from the main signal conveyed via a TAB connectors beam forming group and the CPICH on the TAB connector from the diversity signal conveyed via another TAB connectors beam forming group.

3) If the AAS BS supports DC-HSDPA, 4C-HSDPA, NC-4C-HSDPA or 8C-HSDPA set the TAB connectors to transmit according to TM1, without using TX diversity or MIMO, on all carriers configured using the applicable test configuration and corresponding power setting specified in clause 4.11.

4) Measure the time alignment error between the signals using the P-CPICH on one of the representative TAB connector and CPICH signals on representative TAB connector from another group.

5) If the AAS BS supports DB-DC-HSDPA or any of the multi-band 4C-HSDPA or 8C-HSDPA configurations set the TAB connectors to transmit TM1 on two carriers belonging to different frequency bands, without using TX diversity or MIMO on any of the carriers.

6) Measure the time alignment error between the signals using the P-CPICH and CPICH signals on the TAB connectors.

In addition, for multi-band TAB connector(s), the following steps shall apply:

7) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.5.3.4.2.3 UTRA TDD procedure

1) Start the TAB connector beam forming groups transmission at the manufacturer’s specified rated output power, P_Rated,c,TABC at the TAB connector.

2) Measure the time alignment error between the P-CCPCH and DwPTS on the representative TAB connectors under test.

In addition, for multi-band TAB connector(s), the following steps shall apply:

3) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.5.3.4.2.4 E-UTRA and NR procedure

1) Set the AAS BS to transmit E-TM1.1 or NR-FR1-TM 1.1 or any DL signal using TX diversity (except NR), MIMO transmission or carrier aggregation.

NOTE: For TX diversity (except NR) and MIMO transmission, different ports may be configured in E-TM (using CRS ports p = 0 and 1 with FDM) or NR-FR1-TM (using DMRS ports p = 1000 and 1001 with CDM).

For an AAS BS declared to be capable of single carrier operation only, set the representative TAB connectors to transmit according to manufacturer’s declared rated output power, P_Rated,c,TABC.

If the AAS BS supports intra band contiguous or non-contiguous Carrier Aggregation set the representative TAB connectors to transmit using the applicable test configuration and corresponding power setting specified in clauses 4.10 and 4.11.

If the AAS BS supports inter band carrier aggregation set the representative TAB connectors to transmit, for each band, a single carrier or all carriers, using the applicable test configuration and corresponding power setting specified in clauses 4.10 and 4.11.

2) Measure the time alignment error between the reference symbols on the carrier(s) from the representative TAB connector(s).

In addition, for multi-band TAB connector(s), the following steps shall apply:

6.5.3.5 Test requirement

6.5.3.5.1 UTRA FDD test requirement

For Tx diversity and MIMO transmission, in the tested cell, TAE shall not exceed 0.35 T_c.

For transmission of multiple cells within a frequency band TAE shall not exceed 0.6 T_c.

For transmission of multiple cells in different frequency bands TAE shall not exceed 5.1 T_c.

6.5.3.5.2 UTRA TDD test requirement

The time alignment error shall be less than 65 + 78 ns.

6.5.3.5.3 E-UTRA test requirement

For MIMO or TX diversity transmissions, at each carrier frequency, TAE shall not exceed 90 ns.

For intra-band carrier aggregation, with or without MIMO or TX diversity, TAE shall not exceed 155 ns.

For intra-band non-contiguous carrier aggregation, with or without MIMO or TX diversity, TAE shall not exceed 285 ns.

For inter-band carrier aggregation, with or without MIMO or TX diversity, TAE shall not exceed 285 ns.

6.5.3.5.4 NR test requirement

For MIMO transmissions, at each carrier frequency, TAE shall not exceed 90 ns.

For intra-band contiguous CA, with or without MIMO, TAE shall not exceed 285 ns.

For intra-band non-contiguous CA, with or without MIMO, TAE shall not exceed 3.025 µs.

For inter-band CA, with or without MIMO, TAE shall not exceed 3.025 µs.

6.5.4 Modulation quality

6.5.4.1 Definition and applicability

Modulation quality is defined by the difference between the measured carrier signal and a reference signal. Modulation quality can be expressed e.g. as Peak Code domain Error (PCDE) or Relative Code domain Error (RCDE) or Error Vector Magnitude (EVM) for UTRA and Error Vector Magnitude (EVM) for E-UTRA and NR.

6.5.4.2 Minimum Requirement

The minimum requirement for UTRA operation are defined in TS 37.105 [8], clause 6.5.4.3.

The minimum requirement for E-UTRA operation are defined in TS 37.105 [8], clause 6.5.4.4.

The minimum requirement for NR operation are defined in TS 37.105 [8], clause 6.5.4.2.

6.5.4.3 Test purpose

The test purpose is to verify that modulation quality is within the limit specified by the minimum requirement.

6.5.4.4 UTRA FDD method of test

6.5.4.4.1 Initial conditions

Test environment: normal; see annex B.2.

RF channels to be tested for single carrier: B, M and T; see clause 4.12.1.

Base Station RF Bandwidth position to be tested: B_RFBW, M_RFBW and T_RFBW single-band operation, see clause 4.12.1 single-band operation.

6.5.4.4.2 Procedure

6.5.4.4.2.1 EVM procedure

The minimum requirement is applied to all TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in clause D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) For a TAB connector declared to be capable of single carrier operation only, set the TAB connector to transmit a signal according to TM1 according to clause 4.12.2 at manufacturer’s declared rated output power, P_Rated,c,TABC.

For a TAB connector declared to be capable of multi-carrier operation, set the TAB connector to transmit according to clause 4.12.2 on all carriers configured using the applicable test configuration and corresponding power setting specified in clause 4.11.

2) For each carrier, measure the Error Vector Magnitude and frequency error as defined in annex D.1.1 and the mean power of the signal. The measurement shall be performed on all 15 slots of the frame defined by the Test Model.

3) Using the same setting as in step 1), set the TAB connector to transmit a signal according to TM4, clause 4.12.2, with X value equal to 18, and repeat step 2). If the requirement in clause 6.5.4.5 is not fulfilled, decrease the total output power by setting the base station to transmit a signal according to TM4 with X greater than 18, and repeat step 2).

The following test shall be additionally performed if the base station supports HS-PDSCH transmission using 16QAM:

4) Using the same setting as in step 1), set the base station to transmit according to TM5, clause 4.12.2.

5) Repeat step 2).

In addition, for multi-band TAB connector(s), the following steps shall apply:

6) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.5.4.4.2.2 PCDE procedure

The minimum requirement is applied to all TAB connectors, they may be tested one at a time or multiple TAB connectors may be tested in parallel as shown in annex D.1.1. Whichever method is used the procedure is repeated until all TAB connectors necessary to demonstrate conformance have been tested.

1) For a TAB connector declared to be capable of single carrier operation only, set the TAB connector to transmit a signal according to TM3, clause 4.12.2, at manufacturer’s declared rated output power, P_Rated,c,TABC

For a TAB connector declared to be capable of multi-carrier operation, set the TAB connector to transmit according to TM3 on all carriers configured using the applicable test configuration and corresponding power setting specified in clause 4.11.

2) Measure Peak code domain error according to annexD.1.1. The measurement shall be performed on all 15 slots of the frame defined byTM3. For a TAB connector declared to be capable of multi-carrier operation the measurement is performed on one of the carriers under test.

In addition, for multi-band TAB connector(s), the following steps shall apply:

6.5.4.4.2.3 RCDE procedure

1) For a TAB connector declared to be capable of single carrier operation only, set the TAB connector to transmit a signal according to TM6, clause 4.12.2, at manufacturer’s declared rated output power, P_Rated,c,TABC

For a TAB connector declared to be capable of multi-carrier operation, set the TAB connector to transmit according to TM6, clause 4.12.2, on all carriers configured using the applicable test configuration and corresponding power setting specified in clause 4.11.

2) Measure average Relative code domain error according to annex E. The measurement shall be performed over one frame defined by TM6 and averaged as specified in clause 4.12.2. For a TAB connector declared to be capable of multi-carrier operation the measurement is performed on one of the carriers under test.

In addition, for multi-band TAB connector(s), the following steps shall apply:

6.5.4.5 UTRA TDD method of test

6.5.4.5.1 Initial conditions

Test environment: normal; see annex B.2.

RF channels to be tested for single carrier: B, M and T; see clause 4.12.1.

Base Station RF Bandwidth position to be tested: B_RFBW, M_RFBW and T_RFBW single-band operation, see clause 4.12.1 single-band operation.

Table 6.5.4.5.1-1: Parameters of the TAB connector transmitted signal
for modulation accuracy testing at maximum TAB connector output power for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 6: Transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
Time slots under test	TS4, TS5 and TS6
Number of DPCH in each time slot under test	10
Power of each DPCH	1/10 of Base Station output power
Data content of DPCH	real life (sufficient irregular)
Spreading factor	16

In addition the following test set up only applies for 16QAM capable BS.

Table 6.5.4.5.1-2: Parameters of the TAB connector transmitted signal for modulation accuracy testing at maximum TAB connector output power setting for 1,28 Mcps TDD – 16QAM capable BS

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, 3, 4, 5, 6: transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
Time slots under test	TS4, TS5 and TS6
HS-PDSCH modulation	16QAM
Number of HS-PDSCH in each time slot under test	10
Power of each HS-PDSCH	1/10 of Base Station output power
Data content of HS-PDSCH	Real life (sufficient irregular)
Spreading factor	16

6.5.4.5.2 Procedure

6.5.4.5.2.1 EVM procedure

1) For a TAB connector declared to be capable of single carrier operation only, set the parameters of the TAB connector transmitted signal according to table 6.5.4.5.1-1at manufacturer’s declared output power, P_Rated,c,TABC.

For a TAB connector declared to be capable of multi-carrier operation, set the TAB connector to transmit according to table 6.5.4.5.1-1 on all carriers configured using the applicable test configuration and corresponding power setting specified in clauses 5.3.

2) Measure the error vector magnitude (EVM) for each carrier by applying the global in-channel Tx test method described in annex E with the TAB connector transmitted signal set as described in table 6.5.4.5.1-1.

3) Measure the error vector magnitude (EVM) for each carrier by applying the global in-channel Tx test method described in annex C with the TAB connector transmitted signal on each carrier set as described in table 6.5.4.5.2.1-1.

4) For TAB connector declared to be capable of 16QAM repeat steps 2 and 3 using transmitted signal set as described in tables 6.5.4.5.1-2 and 6.5.4.5.2.1-2.

In addition, for multi-band TAB connector(s), the following steps shall apply:

5) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

Table 6.5.4.5.2.1-1: Parameters of the TAB connector transmitted signal
for modulation accuracy testing at minimum TAB connector output power for 1,28 Mcps TDD

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, …, 6: Transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
Time slot under test	TS4, TS5 and TS6
Number of DPCH in each time slot under test	1
BS output power setting on each carrier	Maximum output power – 30 dB
Data content of DPCH	Real life (sufficient irregular)

Table 6.5.4.5.2.1-2: Parameters of the TAB connector transmitted signal for modulation accuracy
testing at minimum TAB connector output power setting for 1,28 Mcps TDD – 16QAM capable BS

Parameter	Value/description
TDD Duty Cycle	TS i; i = 0, 1, 2, 3, 4, 5, 6: transmit, if i is 0,4,5,6; receive, if i is 1,2,3.
HS-PDSCH modulation	16QAM
Time slots under test	TS4, TS5 and TS6
Number of HS-PDSCH in each time slot under test	1
BS output power setting on each carrier	Maximum output power – 30 dB
Data content of HS-PDSCH	Real life (sufficient irregular)
Spreading factor	16

6.5.4.5.2.2 PCDE procedure

1) For a TAB connector declared to be capable of single carrier operation only, set the parameters of the TAB connector transmitted signal according to table 6.5.4.5.2.1-1 at manufacturer’s declared output power, P_Rated,c,TABC.

For a TAB connector declared to be capable of multi-carrier operation, set the TAB connector to transmit according to table 6.5.4.5.2.1-1 on all carriers configured using the applicable test configuration and corresponding power setting specified in clause 5.3.

2) Measure the Peak code domain error by applying the global in-channel Tx test method described in annex E.

In addition, for multi-band TAB connector(s), the following steps shall apply:

6.5.4.5.2.3 RCDE procedure

2) Measure the Relative code domain error by applying the global in-channel Tx test method described in annex E.

In addition, for multi-band TAB connector(s), the following steps shall apply:

6.5.4.6 E-UTRA and NR method of test

6.5.4.6.1 Initial conditions

Test environment: normal; see annex B.2.

RF channels to be tested for single carrier: B, M and T; see clause 4.12.1.

RF bandwidth positions to be tested for multi-carrier and/or CA:

– B_RFBW, M_RFBW and T_RFBW in single-band operation, see clause 4.12.1;

– B_RFBW_T’_RFBW and B’_RFBW_T_RFBW in multi-band operation, see clause 4.12.1.

6.5.4.6.2 Procedure

1) For a TAB connector declared to be capable of single carrier operation only, set the TAB connector to transmit a signal according to E-TM 3.1 for E-UTRA (or sE-TM3.1-1 for subslot TTI, or sE-TM3.1-2 for slot TTI) or NR-FR1-TM 3.1 for NR at manufacturer’s declared rated output power.

For a TAB connector declared to be capable of multi-carrier and/or CA operation, set the TAB connector to transmit according to E-TM3.1 for E-UTRA (or sE-TM3.1-1 for subslot TTI, or sE-TM3.1-2 for slot TTI) or NR-FR1-TM 3.1 for NR on all carriers configured using the applicable test configuration and corresponding power setting specified in clause 4.10 and 4.11.

2) Measure the EVM and frequency error as defined in annex F.

3) Repeat steps 1 and 2 for the following test models:

– For E-UTRA: repeat steps 1 and 2 for E-TM 3.2, E-TM 3.3 and E-TM 2,

– For E-UTRA with subslot TTI: repeat steps 1 and 2 for sE-TM3.2-1, sE-TM3.3-1 and sE-TM2-1,

– For E-UTRA with slot TTI: repeat steps 1 and 2 for sE-TM3.2-2, sE-TM3.3-2 and sE-TM2-2.

– For NR: repeat steps 1 and 2 for NR-FR1-TM 3.2, NR-FR1-TM 3.3 and NR-FR1-TM 2

If 256QAM is supported by BS:

– For E-UTRA: repeat steps 1 and 2 for E-TM3.1a and E-TM2a,

– For E-UTRA with subslot TTI: repeat steps 1 and 2 for sE-TM3.1a-1 and sE-TM2a-1,

– For E-UTRA with slot TTI: repeat steps 1 and 2 for sE-TM3.1a-2 and sE-TM2a-2.

– For NR: repeat steps 1 and 2 for NR-FR1-TM3.1a and NR-FR1-TM2a,

For E-UTRA test model E-TM2 and E-TM2a the OFDM symbol power shall be at the lower limit of the dynamic range according to the test procedure in clause 6.3.4.4.2 and test requirements in clause 6.3.4.5.2.

For subslot TTI test model sE-TM2-1 and sE-TM2a-1 (or for sE-TM2-2 and sE-TM2a-2 for slot TTI) the OFDM symbol power shall be at the lower limit of the dynamic range according to the test procedure in clause 6.3.4.4.2 and test requirements in clause 6.3.4.5.2.

For NR test model NR-FR1-TM2 and NR-FR1-TM2a the OFDM symbol power shall be at the lower limit of the dynamic range according to the test procedure in clause 6.3.4.4.2 and test requirements in clause 6.3.4.5.3.

If 1024QAM is supported by BS:

– For E-UTRA: repeat steps 1 and 2 for E-TM3.1b and E-TM2b.

– For NR: repeat steps 1 and 2 for NR-FR1-TM3.1b and NR-FR1-TM2b.

For 1024QAM test model E-TM2b and NR-FR1-TM2b the OFDM symbol power shall be at the lower limit of the dynamic range according to the test procedure in clause 6.3.4.4.2.3 and test requirements in clause 6.3.4.5.2.

In addition, for multi-band TAB connector(s), the following steps shall apply:

4) For multi-band TAB connectors and single band tests, repeat the steps above per involved band where single band test configurations and test models shall apply with no carrier activated in the other band.

6.5.4.7 Test Requirements

6.5.4.7.1 UTRA FDD test requirement

The Error Vector Magnitude for each UTRA carrier and every measured slot shall be less than 17.5 % when the TAB connector is transmitting a composite signal using only QPSK modulation and shall be less than 12.5 % when the TAB connector is transmitting a composite signal that includes 16QAM modulation.

The peak code domain error for every measured slot shall not exceed -32 dB at spreading factor 256.

The average Relative Code Domain Error for 64QAM modulated codes shall not exceed -20 dB at spreading factor 16.

6.5.4.7.2 UTRA TDD test requirement

The error vector magnitude (EVM) for each carrier measured according to clause 6.5.4.5.2.1 shall not exceed 12.5 %.

The peak code domain error measured according to clause 6.5.4.5.2.2 shall not exceed -27 dB.

The Relative code domain error measured according to clause 6.5.4.5.2.3 shall not exceed -20.9 dB.

6.5.4.7.3 E-UTRA and NR test requirement

The EVM of each E-UTRA carrier for different modulation schemes on PDSCH or sPDSCH shall be less than the limits in table 6.5.4.7.3-1.

The EVM of each NR carrier for different modulation schemes on PDSCH shall be less than the limits in table 6.5.4.7.3-1a.

Table 6.5.4.7.3-1 EVM requirements for E-UTRA

Modulation scheme for PDSCH	Required EVM (%)
QPSK	18.5
16QAM	13.5
64QAM	9
256QAM	4.5
1024QAM	3.5

Table 6.5.4.7.3-1a EVM: requirements for NR

Modulation scheme for PDSCH	Required EVM (%)
QPSK	18.5
16QAM	13.5
64QAM	9
256QAM	4.5
1024QAM	3.5 %¹ 3.8 %²
NOTE 1: This requirement is applicable for frequencies equal to or below 4.2 GHz. NOTE 2: This requirement is applicable for frequencies above 4.2 GHz.

The EVM requirement shall be applicable within a time period around the centre of the CP therefore the EVM requirement is tested against the maximum of the RMS average of 10 subframes at the two window W extremities.

For E-UTRA, the EVM window length (W) for normal CP and extended CP is specified in TS 36.104 [4], annex E.5.1.

Table 6.5.4.7.3-2 Void

For NR, the EVM window length (W) for normal CP and extended CP is specified in TS 38.104 [36], annex B.5.2.