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Configurable options include:

NFramesSweep: number of 10ms frames used in each sweep

FrameType: frame type and cycling preffix:

            - 0: Frame structure type 1 / Normal CP: FDD

...

            - 3: Frame structure type 2 / Extended CP: TDD

Carrier Frequency (MHz)

TxOutLvlStart, TxOutLvlSpan, TxOutLvlStep (dBm): Define swept power of transmitted signal

N_RB_UL: number or resource blocks used for transmission

State of each uplink PUSCH channel (up to four users currently supported, more users may be easily added)

N_RB_Channel: number or resource blocks used by each user

ModType_Channel: modulation type used by each user (QPSK, 16QAM, 64QAM)

UL_DL_Config: Uplink/Downlink Configuration for TDD (0, 1, 2, 3, 4, 5 or 6)

PTS_Format: Pilot Time Slot Format for TDD (0, 1, 2, 3, 4, 5, 6, 7 or 8)

The test bench can be used to monitor:

The CCDF at the input and output of DUT.

The TX signal spectrum at the input and output of DUT

EVM %rms vs. output power

The impact of phase noise on EVM

The impact of phase/amplitude and DC offset on EVM

ACPR

N_RB_UL defines the channel bandwith as defined in the specifications (See Global Definitions for relationship between N_RB_UL and channel BW).

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DB(EVM(VSA.EVM,1,1,1,12,1,0,1,0,1,1,10,0,0,0,0,0)) (us) LTE UL TimeDB(EVM(VSA.EVM,1,1,1,12,1,0,1,0,1,1,10,0,0,0,0,0)) LTE UL
31404110.7848-3335.3395653

Graph - Power Levels

x Data (Unitless)DB(PWR_MTR(TP.DUT_in,1,0,1,0,0,1,0,1,0,0,1000,0,10,0,-1,0,-1,0,0.5,0,0,0))[x] (dBm) LTE ULDB(PWR_MTR(TP.DUT_out,1,0,1,0,0,1,0,1,0,0,1000,0,10,0,-1,0,-1,0,0.5,0,0,0))[x] (dBm) LTE ULDB(PWR_MTR(S1\S1\TP.ModOut1,1,0,1,0,0,1,0,1,0,0,1000,0,10,0,-1,0,-1,0,0.5,0,0,0))[x] (dBm) LTE ULDB(PWR_MTR(S1\S1\TP.ModOut2,1,0,1,0,0,1,0,1,0,0,1000,0,10,0,-1,0,-1,0,0.5,0,0,0))[x] (dBm) LTE UL
0-8.808762.99405
1-7.808763.99401
2-6.808764.99338
3-5.808765.98986
4-65.74033736756.0651443036
5
6
7
8
9
10

Graph - EVM vs Output Power

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