Low complexity blind residual carrier offset estimation in OFDM-based wireless LAN systems

S. Attallah; Y. Wu; J.W.M. Bergmans

doi:10.1109/WCNC.2007.369

Low complexity blind residual carrier offset estimation in OFDM-based wireless LAN systems

S. Attallah, Y. Wu, J.W.M. Bergmans

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

1 Citation (Scopus)

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Abstract

In Liu and Toreli (1998), a blind carrier frequency offset (CFO) estimation method was proposed for orthogonal frequency multiplexing (OFDM) systems. This method makes use of the fact that in practical OFDM systems, there are some subcarriers that do not carry any data. However, the computation complexity of the method is rather high. In this paper, based on practical considerations, we propose a low complexity blind CFO estimation method. We derive an approximate closed-form solution for the CFO estimate. We show that the proposed algorithm achieves similar performance as the method in Liu and Toreli (1998) with significantly reduced computational complexity. For relatively large CFO values, we show that we could use the iterative algorithm in Wu et al. (2005) to improve the performance of the proposed algorithm.

Original language	English
Title of host publication	Proceedings of the IEEE Wireless Communications and Networking Conference, 2007, WCNC 2007, 11-15 march 2007, Kowloon
Place of Publication	Piscataway
Publisher	Institute of Electrical and Electronics Engineers
Pages	1970-1975
ISBN (Print)	1-4244-0658-7
DOIs	https://doi.org/10.1109/WCNC.2007.369
Publication status	Published - 2007

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title = "Low complexity blind residual carrier offset estimation in OFDM-based wireless LAN systems",

abstract = "In Liu and Toreli (1998), a blind carrier frequency offset (CFO) estimation method was proposed for orthogonal frequency multiplexing (OFDM) systems. This method makes use of the fact that in practical OFDM systems, there are some subcarriers that do not carry any data. However, the computation complexity of the method is rather high. In this paper, based on practical considerations, we propose a low complexity blind CFO estimation method. We derive an approximate closed-form solution for the CFO estimate. We show that the proposed algorithm achieves similar performance as the method in Liu and Toreli (1998) with significantly reduced computational complexity. For relatively large CFO values, we show that we could use the iterative algorithm in Wu et al. (2005) to improve the performance of the proposed algorithm.",

author = "S. Attallah and Y. Wu and J.W.M. Bergmans",

year = "2007",

doi = "10.1109/WCNC.2007.369",

language = "English",

isbn = "1-4244-0658-7",

pages = "1970--1975",

booktitle = "Proceedings of the IEEE Wireless Communications and Networking Conference, 2007, WCNC 2007, 11-15 march 2007, Kowloon",

publisher = "Institute of Electrical and Electronics Engineers",

address = "United States",

}

Attallah, S, Wu, Y & Bergmans, JWM 2007, Low complexity blind residual carrier offset estimation in OFDM-based wireless LAN systems. in Proceedings of the IEEE Wireless Communications and Networking Conference, 2007, WCNC 2007, 11-15 march 2007, Kowloon. Institute of Electrical and Electronics Engineers, Piscataway, pp. 1970-1975. https://doi.org/10.1109/WCNC.2007.369

Low complexity blind residual carrier offset estimation in OFDM-based wireless LAN systems. / Attallah, S.; Wu, Y.; Bergmans, J.W.M.
Proceedings of the IEEE Wireless Communications and Networking Conference, 2007, WCNC 2007, 11-15 march 2007, Kowloon. Piscataway: Institute of Electrical and Electronics Engineers, 2007. p. 1970-1975.

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

TY - GEN

T1 - Low complexity blind residual carrier offset estimation in OFDM-based wireless LAN systems

AU - Attallah, S.

AU - Wu, Y.

AU - Bergmans, J.W.M.

PY - 2007

Y1 - 2007

N2 - In Liu and Toreli (1998), a blind carrier frequency offset (CFO) estimation method was proposed for orthogonal frequency multiplexing (OFDM) systems. This method makes use of the fact that in practical OFDM systems, there are some subcarriers that do not carry any data. However, the computation complexity of the method is rather high. In this paper, based on practical considerations, we propose a low complexity blind CFO estimation method. We derive an approximate closed-form solution for the CFO estimate. We show that the proposed algorithm achieves similar performance as the method in Liu and Toreli (1998) with significantly reduced computational complexity. For relatively large CFO values, we show that we could use the iterative algorithm in Wu et al. (2005) to improve the performance of the proposed algorithm.

AB - In Liu and Toreli (1998), a blind carrier frequency offset (CFO) estimation method was proposed for orthogonal frequency multiplexing (OFDM) systems. This method makes use of the fact that in practical OFDM systems, there are some subcarriers that do not carry any data. However, the computation complexity of the method is rather high. In this paper, based on practical considerations, we propose a low complexity blind CFO estimation method. We derive an approximate closed-form solution for the CFO estimate. We show that the proposed algorithm achieves similar performance as the method in Liu and Toreli (1998) with significantly reduced computational complexity. For relatively large CFO values, we show that we could use the iterative algorithm in Wu et al. (2005) to improve the performance of the proposed algorithm.

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DO - 10.1109/WCNC.2007.369

M3 - Conference contribution

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BT - Proceedings of the IEEE Wireless Communications and Networking Conference, 2007, WCNC 2007, 11-15 march 2007, Kowloon

PB - Institute of Electrical and Electronics Engineers

CY - Piscataway

ER -

Low complexity blind residual carrier offset estimation in OFDM-based wireless LAN systems

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