Joint estimation of CFO and receiver I/Q imbalance using virtual subcarriers for OFDM systems

Chao Wei Chang*, Yuan Hwui Chung, See May Phoong, Yuan-Pei Lin

*Corresponding author for this work

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

3 Scopus citations

Abstract

In this paper, we study the estimation of carrier frequency offset (CFO) in the presence of the receiver in-phase and quadrature-phase (I/Q) imbalance for orthogonal frequency division multiplexing (OFDM) systems. By minimizing the energy of the samples on the virtual subcarriers, our proposed algorithm can jointly estimate the CFO and I/Q parameters using one OFDM block. When the CFO is small, a closed-form solution can be obtained. Simulation results show that our proposed method can provide a good performance for both of the I/Q and CFO estimation and it compares favorably with a recent method.

Original languageEnglish
Title of host publication2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012
Pages2297-2302
Number of pages6
DOIs
StatePublished - 1 Dec 2012
Event2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012 - Sydney, NSW, Australia
Duration: 9 Sep 201212 Sep 2012

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Conference

Conference2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2012
CountryAustralia
CitySydney, NSW
Period9/09/1212/09/12

Keywords

  • CFO
  • I/Q Imbalance
  • OFDM
  • Virtual Subcarrier

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