A novel carrier estimation algorithm for OFDM communication systems

Jeffrey Tsui; Sam Reisenfeld

doi:10.1109/AUSCTW.2005.1624232

A novel carrier estimation algorithm for OFDM communication systems

Jeffrey Tsui^*, Sam Reisenfeld

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

Abstract

A new pilot assisted (PA) carrier frequency offset (CFO) estimation algorithm for OFDM communication system is presented in this paper. This algorithm extends the principle of the discrete Fourier transform (DFT) based single carrier frequency estimation algorithm in [1]. The proposed algorithm comprises of two steps, first a coarse CFO estimator such as the one presented in [2] is employed to estimate the integer component of the CFO. Assuming frequency corresponding to the DFT bin number which is the integer component of the CFO has been estimated correctly, the residue CFO will be bounded between -0.57T_U to 0.57T_U, where T_U is the OFDM symbol period. In this paper, a new fractional frequency estimation algorithm is presented. Unlike the fractional frequency estimation algorithm presented in [2] [3], this estimator can estimate the frequency offset on a symbol by symbol bases which is ideal for environments where the channel characteristics change rapidly. It will be shown that under additive white Gaussian noise (AWGN), the proposed frequency estimation algorithm has a variance performance that approaches the Cramer Rao lower bound (CRLB) at high signal to noise ratio (SNR) and has an acquisition range of -0.5T_U to 0.5T_U Hz.

Original language	English
Title of host publication	Proceedings 6th Australian Communications Theory Workshop 2005
Editors	Leif W. Hanlen, Paul D. Teal
Place of Publication	Piscataway, NJ
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	89-94
Number of pages	6
Volume	2005
ISBN (Print)	0780390075, 9780780390072
DOIs	https://doi.org/10.1109/AUSCTW.2005.1624232
Publication status	Published - 2005
Externally published	Yes
Event	6th Australian Communications Theory Workshop - 2005 - Brisbane, Australia Duration: 2 Feb 2005 → 4 Feb 2005

Other

Other	6th Australian Communications Theory Workshop - 2005
Country/Territory	Australia
City	Brisbane
Period	2/02/05 → 4/02/05

Keywords

Channel estimation
DFT based frequency estimation
Discrete Fourier transform
OFDM carrier frequency offset estimation
Orthogonal frequency division multiplex
Pilot aided channel estimation
Pilot aided frequency estimation

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10.1109/AUSCTW.2005.1624232

Cite this

@inproceedings{db6ee5ce1a3041ed9d045310987c6b55,

title = "A novel carrier estimation algorithm for OFDM communication systems",

abstract = "A new pilot assisted (PA) carrier frequency offset (CFO) estimation algorithm for OFDM communication system is presented in this paper. This algorithm extends the principle of the discrete Fourier transform (DFT) based single carrier frequency estimation algorithm in [1]. The proposed algorithm comprises of two steps, first a coarse CFO estimator such as the one presented in [2] is employed to estimate the integer component of the CFO. Assuming frequency corresponding to the DFT bin number which is the integer component of the CFO has been estimated correctly, the residue CFO will be bounded between -0.57TU to 0.57TU, where TU is the OFDM symbol period. In this paper, a new fractional frequency estimation algorithm is presented. Unlike the fractional frequency estimation algorithm presented in [2] [3], this estimator can estimate the frequency offset on a symbol by symbol bases which is ideal for environments where the channel characteristics change rapidly. It will be shown that under additive white Gaussian noise (AWGN), the proposed frequency estimation algorithm has a variance performance that approaches the Cramer Rao lower bound (CRLB) at high signal to noise ratio (SNR) and has an acquisition range of -0.5TU to 0.5TU Hz.",

keywords = "Channel estimation, DFT based frequency estimation, Discrete Fourier transform, OFDM carrier frequency offset estimation, Orthogonal frequency division multiplex, Pilot aided channel estimation, Pilot aided frequency estimation",

author = "Jeffrey Tsui and Sam Reisenfeld",

year = "2005",

doi = "10.1109/AUSCTW.2005.1624232",

language = "English",

isbn = "0780390075",

volume = "2005",

pages = "89--94",

editor = "Hanlen, {Leif W.} and Teal, {Paul D.}",

booktitle = "Proceedings 6th Australian Communications Theory Workshop 2005",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

address = "United States",

note = "6th Australian Communications Theory Workshop - 2005 ; Conference date: 02-02-2005 Through 04-02-2005",

}

Tsui, J & Reisenfeld, S 2005, A novel carrier estimation algorithm for OFDM communication systems. in LW Hanlen & PD Teal (eds), Proceedings 6th Australian Communications Theory Workshop 2005. vol. 2005, 1624232, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 89-94, 6th Australian Communications Theory Workshop - 2005, Brisbane, Queensland, Australia, 2/02/05. https://doi.org/10.1109/AUSCTW.2005.1624232

A novel carrier estimation algorithm for OFDM communication systems. / Tsui, Jeffrey; Reisenfeld, Sam.
Proceedings 6th Australian Communications Theory Workshop 2005. ed. / Leif W. Hanlen; Paul D. Teal. Vol. 2005 Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE), 2005. p. 89-94 1624232.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - A novel carrier estimation algorithm for OFDM communication systems

AU - Tsui, Jeffrey

AU - Reisenfeld, Sam

PY - 2005

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N2 - A new pilot assisted (PA) carrier frequency offset (CFO) estimation algorithm for OFDM communication system is presented in this paper. This algorithm extends the principle of the discrete Fourier transform (DFT) based single carrier frequency estimation algorithm in [1]. The proposed algorithm comprises of two steps, first a coarse CFO estimator such as the one presented in [2] is employed to estimate the integer component of the CFO. Assuming frequency corresponding to the DFT bin number which is the integer component of the CFO has been estimated correctly, the residue CFO will be bounded between -0.57TU to 0.57TU, where TU is the OFDM symbol period. In this paper, a new fractional frequency estimation algorithm is presented. Unlike the fractional frequency estimation algorithm presented in [2] [3], this estimator can estimate the frequency offset on a symbol by symbol bases which is ideal for environments where the channel characteristics change rapidly. It will be shown that under additive white Gaussian noise (AWGN), the proposed frequency estimation algorithm has a variance performance that approaches the Cramer Rao lower bound (CRLB) at high signal to noise ratio (SNR) and has an acquisition range of -0.5TU to 0.5TU Hz.

AB - A new pilot assisted (PA) carrier frequency offset (CFO) estimation algorithm for OFDM communication system is presented in this paper. This algorithm extends the principle of the discrete Fourier transform (DFT) based single carrier frequency estimation algorithm in [1]. The proposed algorithm comprises of two steps, first a coarse CFO estimator such as the one presented in [2] is employed to estimate the integer component of the CFO. Assuming frequency corresponding to the DFT bin number which is the integer component of the CFO has been estimated correctly, the residue CFO will be bounded between -0.57TU to 0.57TU, where TU is the OFDM symbol period. In this paper, a new fractional frequency estimation algorithm is presented. Unlike the fractional frequency estimation algorithm presented in [2] [3], this estimator can estimate the frequency offset on a symbol by symbol bases which is ideal for environments where the channel characteristics change rapidly. It will be shown that under additive white Gaussian noise (AWGN), the proposed frequency estimation algorithm has a variance performance that approaches the Cramer Rao lower bound (CRLB) at high signal to noise ratio (SNR) and has an acquisition range of -0.5TU to 0.5TU Hz.

KW - Channel estimation

KW - DFT based frequency estimation

KW - Discrete Fourier transform

KW - OFDM carrier frequency offset estimation

KW - Orthogonal frequency division multiplex

KW - Pilot aided channel estimation

KW - Pilot aided frequency estimation

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U2 - 10.1109/AUSCTW.2005.1624232

DO - 10.1109/AUSCTW.2005.1624232

M3 - Conference proceeding contribution

AN - SCOPUS:33947185386

SN - 0780390075

SN - 9780780390072

VL - 2005

SP - 89

EP - 94

BT - Proceedings 6th Australian Communications Theory Workshop 2005

A2 - Hanlen, Leif W.

A2 - Teal, Paul D.

PB - Institute of Electrical and Electronics Engineers (IEEE)

CY - Piscataway, NJ

T2 - 6th Australian Communications Theory Workshop - 2005

Y2 - 2 February 2005 through 4 February 2005

ER -

A novel carrier estimation algorithm for OFDM communication systems

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