A simple method for the analytical characterization of OFDM schemes with LINC transmitter structures

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The linear amplification with nonlinear components (LINC) techniques allow a highly efficient amplification of orthogonal frequency division multiplexing (OFDM) signals, but also introduce nonlinear distortion. For this reason, it is important to study the impact of this distortion in the performance of OFDM schemes. Usually this impact is studied by taking advantage of the Gaussian nature of OFDM signals and using intermodulation products (IMP) tools. However, this approach suffers from complexity and/or even convergence problems especially when the nonlinearities are severe, as is the case LINC nonlinearities. In this work we define equivalent nonlinearities that can be employed to substitute the conventional LINC nonlinearities, but that lead to signals with the same spectral characterization. We then use these equivalent nonlinearities to provide accurate estimates for the power spectral density (PSD) and for the optimum performance of OFDM signals that are subjected to LINC structures. 1.

Original languageEnglish
Title of host publication2015 12th International Symposium on Wireless Communication Systems, ISWCS 2015 - Proceedings
PublisherVDE Verlag GmbH
Pages81-85
Number of pages5
Volume2016-April
ISBN (Electronic)978-1-4673-6540-6
DOIs
Publication statusPublished - 15 Apr 2016
Event12th International Symposium on Wireless Communication Systems, ISWCS 2015 - Brussels, Belgium
Duration: 25 Aug 201528 Aug 2015

Conference

Conference12th International Symposium on Wireless Communication Systems, ISWCS 2015
CountryBelgium
CityBrussels
Period25/08/1528/08/15

Keywords

  • LINC
  • OFDM signals
  • PAPR
  • Performance evaluation

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    Guerreiro, J., Dinis, R., & Montezuma de Carvalho, P. M. D. A. B. (2016). A simple method for the analytical characterization of OFDM schemes with LINC transmitter structures. In 2015 12th International Symposium on Wireless Communication Systems, ISWCS 2015 - Proceedings (Vol. 2016-April, pp. 81-85). [7454455] VDE Verlag GmbH. https://doi.org/10.1109/ISWCS.2015.7454455