I/Q imbalance compensation using null-carriers in OFDM direct-conversion receiver

Junghwa Bae, Jinwoo Park

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This letter proposes a compensation method that can alleviate the problem of I/Q mismatch generated in the direct-conversion receiver of OFDM systems. In the proposed method, the amount of I/Q mismatch is estimated using null-carriers in transmitted signals, and it is subtracted from received symbols to suppress I/Q mismatch effects. Simulations show experiments that the proposed method can effectively eliminate the I/Q mismatch effects.

Original languageEnglish
Pages (from-to)2257-2260
Number of pages4
JournalIEICE Transactions on Communications
Issue number8
Publication statusPublished - 2006 Aug


  • Direct-conversion receiver
  • I/Q imbalance
  • I/Q mismatch
  • Null-carriers
  • OFDM

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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