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

Mamiko Inamori, Shuzo Takayama, Yukitoshi Sanada

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトル2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009
出版社Institute of Electrical and Electronics Engineers Inc.
ページ1577-1581
ページ数5
ISBN(印刷版)9781424451234
DOI
出版ステータスPublished - 2009
イベント2009 IEEE 20th Personal, Indoor and Mobile Radio Communications Symposium, PIMRC 2009 - Tokyo, Japan
継続期間: 2009 9 132009 9 16

出版物シリーズ

名前IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Other

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

ASJC Scopus subject areas

  • 電子工学および電気工学

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