Welcome to the RF WebLab IMS2026 student competition home page!

RF weblab at Chalmers hosted the IMS Digital PreDistortion Student Design Competition (IMS DPD SDC) multiple times previously. This is the website for the 2026 competition.

The challenge this year is to perform digital pre-distortion (DPD) while there is a strong interferer present at the output of the amplifier. For example representing a multi-band situation, or a neighboring element of a phased array that is coupled to the amplifier under test. Competitors will have no control over the interferer, but its signal will be known to them.

This year’s DUT consists of two chains: pre-driver, driver and final. Where the final PAs are Doherty amplifiers realized in GaN technology. The input signal to both RF chains are coherently created using an Rohde & Schwarz SMW200A Vector Signal Generator. One RF chain provides the desired signal, whereas the other chain contains the interfering signal. The two RF chains are coupled via a fixed 10 dB coupling factor and the output of the desired signal RF chain is coupled to an Rohde & Schwartz FSW Signal & Spectrum Analyzer.

There will be one method to use this platform. Download a dedicated MATLAB .m file that handles the entire process for you. You can find more information in the Access Details section.

For specific questions about this year’s competition, please contact us at sdc@dpdcompetition.com.