This website is specifically for the IMS2026 Digital Pre-Distortion (DPD) Student Design Competition. (SDC), for which a dedicated measurement system was created. The normal RF WebLab is also available at https://dpdcompetition.com/rfweblab/.

To use RF WebLab for the IMS2026 DPD SDC competition we provide a MatLab m-function RFWebLab_IMS2026_PA_meas_v1_1.m (see descriptions below).

Common Restrictions
In order to protect the amplifier and the system from being burned limitations on peak output power and rms output power from the vector signal generator are enforced. It is assumed that the system is a 50 ohm system. The maximum allowed rms power from the signal generator is -16 dBm. The maximum allowed peak power level will ensure that the peaks of the input signals stay below -7.5 dBm. There is also a maximum peak-to-average power ratio of the IQ-data signal of 20 dB. If any of these limits are exceeded, the system will not perform the measurement. The output in these cases is empty.

A maximum of 1 000 000 IQ-data samples are accepted as input. If a file with more than 1 000 000 samples is uploaded, only the first 1 000 000 samples are actually used. The number of samples in the output data file is of the same length as the input signal (or 1 000 000 samples if the input signal was longer).

The sampling rate in the generator is 2 GS/s for both channels. The sampling rate of the analyzer is 1 GS/s. The maximum useful bandwidths are 1.6 GHz and 800 MHz respectively. This means that any signal component you put outside of the frequency range [-800 800] MHz is impacted before being sent from the signal generator. The signal that is received from the signal analyzer is also limited to 800 MHz bandwidth, i.e., use only the signal components in the range [-400 400] MHz because everything outside of this range is distorted by filtering.

Details on access method:
Use the m-file RFWebLab_IMS2026_PA_meas_v1_1.m, see comments inside the .m file for more details.
Note: you need Java installed and your Matlab needs to be able to connect to the internet for this method to work.

Files for method (version v1.1, date 2026-04-12):
RFWebLab_IMS2026_PA_meas_v1_1.m

For questions, please contact us at sdc@dpdcompetition.com.