Preamble-assisted estimation for frequency-dependent I/Q Mismatch in direct-conversion OFDM receivers

Ming Fu Sun*, Terng-Yin Hsu

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

In direct-conversion orthogonal, frequency division multiplexing (OFDM) receivers, the impact of frequency-dependent I/Q mismatch (IQ-M) with carrier frequency offset (CFO) must be considered. A preamble-assisted estimation is developed, to circumvent the frequencydependent IQ-M with CFO. The results of a simulation and an experiment show that the proposed method could provide good estimation efficiency and enhance the system performance. Moreover, the proposed scheme is compatible with current wireless local area network standards.

Original languageEnglish
Pages (from-to)2426-2432
Number of pages7
JournalIEICE Transactions on Communications
VolumeE92-B
Issue number7
DOIs
StatePublished - 1 Jan 2009

Keywords

  • Carrier frequency offset
  • Direct-conversion receiver
  • I/Q mismatch
  • Orthogonal frequency division multiplexing (OFDM)
  • Wireless local area network (WLAN)

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