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Congratulations to our master student DI Matthias Wakolbinger BSc

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Congratulations to Dr. Bernhard Etzlinger on receiving "Innovationspreis 2017"

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Congratulations to DI Sebastian Poltschak on receiving "2017 EuMC Young Engineer Prize" at EuMW Nuremberg

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Congratulations to Faisal Ahmed MSc and Muhammad Furqan MSc on receiving "2016 Best Paper Award" at EuMW Nuremberg

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Welcome Medina Džebić-Hamidović MSc!

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Welcome Nùria Ballber Torres MSc!

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Congratulations to Faisal Ahmed MSc and Muhammad Furqan MSc on receiving a Honorable Mention at IMS 2017 in Honolulu

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Digitally Assisted RF Systems

Digitally Assisted RF Systems

This research area is devoted to digital signal processing algorithms, which improves the performance of the RF transceiver.

Digital Predistortion

The power amplifier (PA) is the major source of nonlinearity in an RF transceiver. This nonlinearity causes spectral regrowth in neighboring channels and in-band distortion of the transmit signal, leading to high error vector magnitude (EVM) values. Digital predistortion (DPD) is a well-established method to pre-cancel the nonlinearity of the PA, thus significantly improving the linearity of the whole RF transmitter. Our research is focused on applying DPD in multi-antenna transmitters for multiple-input multiple output (MIMO) systems and on DPD algorithms with low-complexity to be implemented in resource-constrained mobile terminals.

I/Q mismatch compensation

Most transmitters and receivers for current mobile communication systems feature a homodyne architecture, which is based on the use of a quadrature modulator/demodulator, also called I/Q modulator/demodulator. This architecture suffers from amplitude and phase mismatch between the I- and Q-branch of the transmitter or receiver. We have investigated so-called blind digital signal processing algorithms to compensate the effects of such mismatches in an efficient way.