Frequency offset estimation scheme in the presence of time-varying DC offset for OFDM direct conversion receivers

Mamiko Inamori; Anas Muhamad Bostamam; Yukitoshi Sanada; Hideki Minami

doi:10.1093/ietcom/e90-b.10.2884

Frequency offset estimation scheme in the presence of time-varying DC offset for OFDM direct conversion receivers

Mamiko Inamori, Anas Muhamad Bostamam, Yukitoshi Sanada, Hideki Minami

電気情報工学科

研究成果: Article › 査読

15 被引用数 (Scopus)

抄録

This paper presents a frequency offset estimation scheme for Orthogonal Frequency Division Multiplex (OFDM) direct conversion receivers. The key idea is to use a differential filter for reduction of DC offset. Frequency offset is estimated in the presence of time-varying DC offset. In order to overcome the varying DC levels under automatic gain control (AGC) circuits, a threshold level is set for the output of the differential filter. The proposed compensation scheme offers superior frequency offset estimation when compared with a conventional scheme with a high pass filter.

本文言語	English
ページ（範囲）	2884-2890
ページ数	7
ジャーナル	IEICE Transactions on Communications
巻	E90-B
号	10
DOI	https://doi.org/10.1093/ietcom/e90-b.10.2884
出版ステータス	Published - 2007

ASJC Scopus subject areas

ソフトウェア
コンピュータネットワークおよび通信
電子工学および電気工学

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10.1093/ietcom/e90-b.10.2884

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abstract = "This paper presents a frequency offset estimation scheme for Orthogonal Frequency Division Multiplex (OFDM) direct conversion receivers. The key idea is to use a differential filter for reduction of DC offset. Frequency offset is estimated in the presence of time-varying DC offset. In order to overcome the varying DC levels under automatic gain control (AGC) circuits, a threshold level is set for the output of the differential filter. The proposed compensation scheme offers superior frequency offset estimation when compared with a conventional scheme with a high pass filter.",

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AU - Minami, Hideki

PY - 2007

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AB - This paper presents a frequency offset estimation scheme for Orthogonal Frequency Division Multiplex (OFDM) direct conversion receivers. The key idea is to use a differential filter for reduction of DC offset. Frequency offset is estimated in the presence of time-varying DC offset. In order to overcome the varying DC levels under automatic gain control (AGC) circuits, a threshold level is set for the output of the differential filter. The proposed compensation scheme offers superior frequency offset estimation when compared with a conventional scheme with a high pass filter.

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KW - Direct conversion

KW - Frequency offset

KW - OFDM

KW - Training sequence

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Frequency offset estimation scheme in the presence of time-varying DC offset for OFDM direct conversion receivers

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