Iterative space-frequency equalizer for CE-OFDM mmW based systems

Roberto Magueta, Daniel Castanheira, Adão Silva, Rui Dinis, Atílio Gameiro

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

6 Citations (Scopus)


In this paper we design a new iterative space-frequency equalizer, based on iterative block decision feedback equalization (IB-DFE) principle, for multiplexing MIMO CE-OFDM millimeter wave (mmW) based systems. Linear frequency domain equalizers are not the most efficient to separate the spatial streams due to inter-carrier interference. Therefore, we design a non-linear equalizer that takes into account both inter-block and residual inter-carrier interferences by efficiently exploit the high space-frequency diversity order inherent to these systems. The feedforward and feedback matrices for the proposed 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 publication2016 IEEE Symposium on Computers and Communication, ISCC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic) 978-150900679-3
Publication statusPublished - 15 Aug 2016
Event2016 IEEE Symposium on Computers and Communication, ISCC 2016 - Messina, Italy
Duration: 27 Jun 20161 Jul 2016


Conference2016 IEEE Symposium on Computers and Communication, ISCC 2016


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


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