Linearization of Active Transmitter Arrays in Presence of Antenna Crosstalk for 5G Systems

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Abstract

By increasing the number of antennas and power amplifiers connected to each in 5G system, the linearization methods like digital pre-distortion (DPD) of each power amplifier is inefficient due to antenna imperfections such as crosstalk. As a result of limited area the distance between antennas in array can vary which leads to unwanted coupling between antennas. A solution to this problem could be treating the amplifiers and antennas as one system and linearizing the main beam signal at the receiver rather than on each single power amplifier. In the work described in this paper, the whole system including amplifiers, antennas and the receiver is treated as a 2-ports system and the impacts of the above mentioned constraints are investigated.
Original languageEnglish
Title of host publication2019 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC) : NORCHIP and International Symposium of System-on-Chip, SoC 2019 - Proceedings
EditorsJari Nurmi, Peeter Ellervee, Kari Halonen, Juha Roning
Number of pages5
PublisherIEEE
Publication dateOct 2019
Article number8906927
ISBN (Print)978-1-7281-2769-9, 978-1-7281-2770-5
ISBN (Electronic)978-1-7281-2769-9
DOIs
Publication statusPublished - Oct 2019
Event2019 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC) - Helsinki, Finland
Duration: 29 Oct 201930 Oct 2019

Conference

Conference2019 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC)
CountryFinland
CityHelsinki
Period29/10/201930/10/2019

Keywords

  • Digital pre-distortion (DPD)
  • Digital to Analog Converter (DAC)
  • Local Oscillator (LO)
  • Multiple Input Multiple Output (MIMO)
  • Power Amplifier (PA)

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