Joint transmitter and receiver I/Q imbalance estimation in presence of carrier frequency offset

Xiaojing Huang, Jian A. Zhang, Y. Jay Guo

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

3 Citations (Scopus)

Abstract

This paper proposes a simple frequency domain joint transmitter and receiver I/Q imbalance estimation method which exploits the phase rotation introduced by carrier frequency offset. Using two frequency domain training sequences inserted in each transmission frame, the transmitter and receiver I/Q imbalances can be jointly estimated over multiple frames. The transmitter I/Q imbalance parameter can be fed back to the transmitter for I/Q imbalance pre-compensation, whereas the receiver I/Q imbalance can be compensated locally followed by conventional frequency domain equalization. Numerical simulation results show that the image rejection ratios for both transmitter and receiver after I/Q imbalance compensation can be improved to over 50 dB which is necessary for multichannel systems with high order modulation and wide transmission bandwidth.

Original languageEnglish
Title of host publication2015 15th International Symposium on Communications and Information Technologies, ISCIT 2015
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages209-212
Number of pages4
ISBN (Electronic)9781467368209
DOIs
Publication statusPublished - 22 Apr 2016
Externally publishedYes
Event15th International Symposium on Communications and Information Technologies, ISCIT 2015 - Nara, Japan
Duration: 7 Oct 20159 Oct 2015

Other

Other15th International Symposium on Communications and Information Technologies, ISCIT 2015
CountryJapan
CityNara
Period7/10/159/10/15

Keywords

  • carrier frequency offset
  • I/Q imbalance
  • image rejection
  • multichannel system
  • spectral efficiency

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