Modelling the impact of phase errors onmulti-antenna linc transmitters for of DM systems

Afonso Ferreira, Rui Dinis, Paulo Montezuma

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

Abstract

→LINC transmitters (LInear amplification with Nonlinear Components) are suitable for the power amplification of variable-envelope signals, since they allow the use of lowcost, highly-efficient strongly-nonlinear power amplifiers. However, the combination of the outputs of the LINC's two amplifiers has is the weak part of it: The combiner losses offset the amplification efficiency gains inherent to the use of highly-efficient power amplifiers and/or it might have linearity requirements. In this paper we consider a LINC transmitter structure for OFDM systems (Orthogonal Frequency Division Multiplexing) that does not require a combiner, since the output of each amplifier is sent to a different antenna, with the channels being combined at the channel level. Therefore, our transmitter outperforms conventional LINC transmitters. We propose an analytical model for the study of the impact of phase errors on the performance. It is shown that the proposed multi-antenna LINC (MA-LINC) is robust to estimation impairments.

Original languageEnglish
Title of host publicationProceedings of the IASTED International Conference Modelling, Identification and Control, MIC 2017
PublisherACTA Press
Pages237-241
Number of pages5
Volume848
ISBN (Electronic)978-088986988-2
DOIs
Publication statusPublished - 1 Jan 2017
Event2017 IASTED International Conference on Modelling, Identification and Control, MIC 2017 - Innsbruck, Austria
Duration: 20 Feb 201721 Feb 2017

Conference

Conference2017 IASTED International Conference on Modelling, Identification and Control, MIC 2017
CountryAustria
CityInnsbruck
Period20/02/1721/02/17

Keywords

  • LINC Transmitters
  • Multi-Antenna Systems
  • Nonlinear Distortion
  • OFDM modulations
  • Power Amplification

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