IB-DFE based equalizer for constant envelop OFDM systems

Roberto Magueta, Adao Silva, Rui Miguel Henriques Dias Morgado Dinis, Atilio Gameiro

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

1 Citation (Scopus)

Abstract

Constant envelope OFDM (CE-OFDM) is a promising modulation technique for future millimeter wave (mmW) based wireleb communications, since it allows low-cost and highly efficient power amplification based on strongly nonlinear amplifiers. The aim of this paper is to design a new iterative space-frequency equalizer, based on iterative block decision feedback equalization (IB-DFE) principle, for multiplexing MIMO CE-OFDM based systems. The equalizer is designed to take into account both inter-block and residual inter-carrier interferences by efficiently exploit the space-frequency diversity order inherent to these systems. The matrices for this iterative space-frequency equalizer are obtained by minimizing the overall mean square error (MSE) of all data streams at each subcarrier. Our iterative scheme significantly outperforms the linear frequency domain equalizers, recently considered for CE-OFDM, with only a few iterations.

Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Telecommunications, ConTEL 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479989720
DOIs
Publication statusPublished - 31 Aug 2015
Event13th International Conference on Telecommunications, ConTEL 2015 - Graz, Austria
Duration: 13 Jul 201515 Jul 2015

Conference

Conference13th International Conference on Telecommunications, ConTEL 2015
CountryAustria
CityGraz
Period13/07/1515/07/15

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Keywords

  • CE-OFDM systems
  • frequency domain
  • iterative equalizers
  • MIMO

Cite this

Magueta, R., Silva, A., Dinis, R. M. H. D. M., & Gameiro, A. (2015). IB-DFE based equalizer for constant envelop OFDM systems. In Proceedings of the 13th International Conference on Telecommunications, ConTEL 2015 [7231217] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ConTEL.2015.7231217