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Configurable options include:

Rate_ID: 0 to 6 (defines modulation and code rate)

UD_mode: Downlink PUSC, Downlink FUSC or Uplink PUSC

NFFT: FFT size (2048, 1024, 512, 128)

G: Cyclic prefix (1/4, 1/8, 1/16, 1/32)

Nominal bandwidth (MHz)

Carrier Frequency (MHz)

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

The test bench can be used to monitor:

The CCDF measurement

The TX signal vs. spectral mask

EVM %rms vs. output power

The impact of phase noise on EVM

The impact of phase/amplitude and DC offset on EVM


Note the amplifier model is based on a text data file. It can be replaced with an MWO circuit or a VSS behavioral amplifier model that accounts for frequency dependency. This test bench is used to illustrate several capabilities of VSS.