On the design of frequency-domain equalizers for OQPSK modulations

Rui Dinis, Miguel Luzio, Paulo Montezuma

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

10 Citations (Scopus)


This paper considers frequency-domain receiver design for OQPSK signals (Offset Quaternary Phase Shift Keying). It is shown that conventional QPSK receivers are not suitable to OQPSK schemes since they lead to significant interference between in-phase (I) and quadrature (Q) components. To overcome this problem we propose several linear receivers where there is no I-Q interference. Our receivers are suitable to OQPSK schemes, significantly outperforming frequency-domain receivers designed for QPSK modulations.

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


  • Equalizers
  • Quadrature phase shift keying
  • Interference
  • Signal design
  • OFDM modulation
  • Fluctuations
  • Power amplifiers
  • Phase modulation
  • Telecommunications
  • Phase shift keying


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