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

Department of Electronics and Electrical Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

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.

Original language	English
Pages (from-to)	2884-2890
Number of pages	7
Journal	IEICE Transactions on Communications
Volume	E90-B
Issue number	10
DOIs	https://doi.org/10.1093/ietcom/e90-b.10.2884
Publication status	Published - 2007

Keywords

DC offset
Direct conversion
Frequency offset
OFDM
Training sequence

ASJC Scopus subject areas

Software
Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.1093/ietcom/e90-b.10.2884

Cite this

@article{eb112a49d8374de9a06ac50d01d00376,

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

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.",

keywords = "DC offset, Direct conversion, Frequency offset, OFDM, Training sequence",

author = "Mamiko Inamori and Bostamam, {Anas Muhamad} and Yukitoshi Sanada and Hideki Minami",

year = "2007",

doi = "10.1093/ietcom/e90-b.10.2884",

language = "English",

volume = "E90-B",

pages = "2884--2890",

journal = "IEICE Transactions on Communications",

issn = "0916-8516",

publisher = "Maruzen Co., Ltd/Maruzen Kabushikikaisha",

number = "10",

}

TY - JOUR

T1 - Frequency offset estimation scheme in the presence of time-varying DC offset for OFDM direct conversion receivers

AU - Inamori, Mamiko

AU - Bostamam, Anas Muhamad

AU - Sanada, Yukitoshi

AU - Minami, Hideki

PY - 2007

Y1 - 2007

N2 - 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.

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.

KW - DC offset

KW - Direct conversion

KW - Frequency offset

KW - OFDM

KW - Training sequence

UR - http://www.scopus.com/inward/record.url?scp=62949243373&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=62949243373&partnerID=8YFLogxK

U2 - 10.1093/ietcom/e90-b.10.2884

DO - 10.1093/ietcom/e90-b.10.2884

M3 - Article

AN - SCOPUS:62949243373

SN - 0916-8516

VL - E90-B

SP - 2884

EP - 2890

JO - IEICE Transactions on Communications

JF - IEICE Transactions on Communications

IS - 10

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this