Page tree

Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

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).

...

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
100729443.681-3534.460236

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
0-6.655465.14735
1-5.655466.14728
2-4.655467.14659
3-3.655468.14301
4-2.655469.13256
5-1.65546649410.11261152
6
7
8
9
10

Graph - EVM vs Output Power

...