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arXiv · 2607.11612

OwnDPDLab: A Flexible Open-Source Testbed for Wideband DPD Algorithm Benchmarking

Marvin Jaeger·Philipp Luetke·David Kopyto·Georg Frederik Riemschneider·Omar Jabi·Alexander Koelpin
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Abstract

5G and Beyond-5G standards require digital predistortion (DPD) algorithms to operate on increased signal bandwidths. Wideband laboratory test hardware is cost-intensive, and openly available solutions lack flexibility. The OwnDPDLab provides a highly flexible, affordable, open-source, and openly accessible system. It is based on the RFSoC 4x2 and supports full control of center frequency, sampling mode, output power, and input attenuation at a signal bandwidth of up to 1 GHz. The system's capability is demonstrated by linearizing a laboratory power amplifier using a 196.608 MHz orthogonal frequency division multiplexing (OFDM) signal with 256-QAM modulation using both a memory polynomial and an augmented real-valued time-delay neural network in the first and second Nyquist zone. The system achieves a normalized mean squared error improvement of up to 23 dB and an adjacent channel leakage ratio improvement of up to 11 dB, using DPD.

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Marvin Jaeger, Philipp Luetke, David Kopyto, Georg Frederik Riemschneider, Omar Jabi, Alexander Koelpin. 2026-07-13. OwnDPDLab: A Flexible Open-Source Testbed for Wideband DPD Algorithm Benchmarking. https://arxiv.org/abs/2607.11612

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