Iterative frequency-domain equalization for general constellations

Rui Dinis, Paulo Montezuma, Nuno Souto, João Carlos Marques Silva

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

61 Citations (Scopus)


IB-DFE (Iterative Block DFE) is a promising turbo equalization technique for SC-FDE schemes (Single-Carrier with Frequency Domain Equalization). However, typical IB-DFE implementations are tailored for a specific constellation (usually QPSK). In this paper we propose a general method for designing IB-DFE receivers for any constellation. Our approach relies on an analytical characterization of the mapping rule were the constellation symbols are written as a linear function of the transmitted bits. This method is then employed in both uniform and non-uniform QAM constellations.

Original languageEnglish
Title of host publication33rd IEEE Sarnoff Symposium 2010, Conference Proceedings
Place of PublicationPiscataway
ISBN (Electronic)978-1-4244-5594-2, 978-1-4244-5593-5
ISBN (Print)978-1-4244-5592-8
Publication statusPublished - 2010
Event33rd IEEE Sarnoff Symposium 2010 - Princeton, NJ, United States
Duration: 12 Apr 201014 Apr 2010


Conference33rd IEEE Sarnoff Symposium 2010
Country/TerritoryUnited States
CityPrinceton, NJ


  • Frequency domain analysis
  • Feedback loop
  • Decision feedback equalizers
  • Quadrature phase shift keying
  • Quadrature amplitude modulation
  • Decoding
  • Convolution
  • Discrete Fourier transforms
  • Telecommunications
  • Design methodology


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