IQ imbalance estimation scheme with intercarrier interference self-cancellation pilot symbols in OFDM direct conversion receivers

Hiroyuki Miyashita, Mamiko Inamori, Yukitoshi Sanada, Teruji Ide

研究成果: Conference contribution

7 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 pilot subcarriers in the frequency domain. In this scheme, the DC offset is eliminated by a differential filter. However, the accuracy of IQ imbalance estimation is deteriorated due to the intercarrier interference (ICI) components caused by frequency offset. To overcome this problem, a new IQ imbalance estimation scheme with intercarrier interference self-cancellation pilot symbols in the frequency domain has been proposed in this paper. Numerical results obtained through computer simulation show that estimation accuracy and bit error rate (BER) performance are improved.

本文言語English
ホスト出版物のタイトルIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
DOI
出版ステータスPublished - 2012
イベントIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
継続期間: 2012 5月 62012 6月 9

出版物シリーズ

名前IEEE Vehicular Technology Conference
ISSN(印刷版)1550-2252

Other

OtherIEEE 75th Vehicular Technology Conference, VTC Spring 2012
国/地域Japan
CityYokohama
Period12/5/612/6/9

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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