Design and Experimental Validation of Digital Pre-distortion Techniques for mmWave OTA with Multiple Nonlinear Power Amplifiers

Juinn Horng Deng, Chuan Yi Liu, Cun Jhe Liu, Meng Lin Ku

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The millimeter-wave (mmWave) frequency band is used in the 5th generation wireless systems, in which the high frequency unavoidably causes rapid attenuation. Therefore, multiple millimeter-wave power amplifiers (PAs) are utilized to achieve power amplification and to extend transmission range. However, the nonlinear effect is induced after the increased input power. To compensate the nonlinear effect of PAs, the transmitted signal can be pre-compensated by the digital pre-distortion (DPD) technology. In this paper, we verify the application performance of mmWave over-the-air (OTA) nonlinear PAs with DPD compensation. The research and simulation results confirm that the nonlinear problem and signal distortion caused by the power amplifier can be reduced by the indirect-learning based DPD technology, thereby improving the spectrum efficiency.

Original languageEnglish
Title of host publication17th IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665401203
DOIs
StatePublished - Aug 2021
Event17th IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2021 - Virtual, Osaka, Japan
Duration: 30 Aug 202131 Aug 2021

Publication series

Name17th IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2021 - Proceedings

Conference

Conference17th IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2021
Country/TerritoryJapan
CityVirtual, Osaka
Period30/08/2131/08/21

Keywords

  • digital pre-distortion
  • indirect learning architecture
  • millimeter-wave
  • multiple power amplifiers
  • nonlinearity
  • over-the-air
  • spectrum efficiency

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