Frequency domain IQ imbalance estimation in the presence of DC offset and frequency offset

Mamiko Inamori, Shuzo Takayama, Yukitoshi Sanada

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

1 Citation (Scopus)

Abstract

Direct conversion receivers in orthogonal frequency division multiplexing (OFDM) systems suffer from direct current (DC) offset, frequency offset, and IQ imbalance. We have proposed an IQ imbalance estimation scheme in the presence of DC offset and frequency offset, which uses preamble signals in the time domain. In this scheme, the DC offset is eliminated by a differential filter. However, the accuracy of IQ imbalance estimation is deteriorated when the frequency offset is small. To overcome this problem, a new IQ imbalance estimation scheme in the frequency domain has been proposed in this paper. The IQ imbalance is estimated with pilot subcarriers. Numerical results obtained through computer simulation show that estimation accuracy and bit error rate (BER) performance can be improved even if the frequency offset is small.

Original languageEnglish
Title of host publicationIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
DOIs
Publication statusPublished - 2009
Event2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009 - Tokyo, Japan
Duration: 2009 Sep 132009 Sep 16

Other

Other2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
CountryJapan
CityTokyo
Period09/9/1309/9/16

Fingerprint

Bit error rate
Orthogonal frequency division multiplexing
Computer simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Inamori, M., Takayama, S., & Sanada, Y. (2009). Frequency domain IQ imbalance estimation in the presence of DC offset and frequency offset. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC [5450294] https://doi.org/10.1109/PIMRC.2009.5450294

Frequency domain IQ imbalance estimation in the presence of DC offset and frequency offset. / Inamori, Mamiko; Takayama, Shuzo; Sanada, Yukitoshi.

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2009. 5450294.

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

Inamori, M, Takayama, S & Sanada, Y 2009, Frequency domain IQ imbalance estimation in the presence of DC offset and frequency offset. in IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC., 5450294, 2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009, Tokyo, Japan, 09/9/13. https://doi.org/10.1109/PIMRC.2009.5450294
Inamori M, Takayama S, Sanada Y. Frequency domain IQ imbalance estimation in the presence of DC offset and frequency offset. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2009. 5450294 https://doi.org/10.1109/PIMRC.2009.5450294
Inamori, Mamiko ; Takayama, Shuzo ; Sanada, Yukitoshi. / Frequency domain IQ imbalance estimation in the presence of DC offset and frequency offset. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. 2009.
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