Blind Adaptive Compensation of I/Q Mismatch and Frequency Offset in Low-IF Receivers

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Abstract

In this work, we present an adaptive non-data-aided compensator for the in-phase/quadrature-phase (I/Q) mismatch in low-intermediate frequency (heterodyne) receivers. In particular, the adaptive I/Q mismatch algorithm is derived by exploiting the uncorrelatedness between the desired and the image signals, and is used to compensate for gain imbalance and phase-offset error. Furthermore, the frequency-offset error is separately compensated by using an adaptive minimization of a fourth-order statistics based cost function.

Original languageEnglish
Title of host publicationProceedings - 12th International Conference on Frontiers of Information Technology, FIT 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages127-132
Number of pages6
ISBN (Electronic)9781479975051
DOIs
StatePublished - 2014

Publication series

NameProceedings - 12th International Conference on Frontiers of Information Technology, FIT 2014

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

Keywords

  • I/Q imbalance
  • adaptive decorrelation
  • adaptive filter
  • blind calibration
  • fourth-order statistics
  • frequency-offset recovery
  • low-IF

ASJC Scopus subject areas

  • Information Systems

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