Elimination of carrier frequency offset in uplink OFDMA system based on TD-LMS algorithm

Qing Yang Guan; Hong Lin Zhao; Qing Guo

doi:10.3969/j.issn.1000-565X.2010.05.002

Elimination of carrier frequency offset in uplink OFDMA system based on TD-LMS algorithm

Qing Yang Guan^*
, Hong Lin Zhao
, Qing Guo

^*Corresponding author for this work

School of Electronics and Information Engineering

Harbin Institute of Technology

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

Abstract

A time-domain adaptive algorithm based on least mean square (TD-LMS) is proposed to eliminate the interference due to the carrier frequency offset (CFO) from different users in uplink OFDMA (Orthogonal Frequency Division Multiple Access) system. In this algorithm, the CFO in time domain is estimated and is adjusted with an estimator. Then, the residual CFO is eliminated with TD-LMS scheme in time domain. Simulated results indicate that, ascompared with the algorithm based on least square, the proposed algorithm is effective in eliminating the CFO of users, with a gain of 3dB in the same simulation conditions.

Original language	English
Pages (from-to)	6-10
Number of pages	5
Journal	Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science)
Volume	38
Issue number	5
DOIs	https://doi.org/10.3969/j.issn.1000-565X.2010.05.002
State	Published - May 2010

Keywords

Carrier frequency offset
Orthogonal frequency division multiple access
Signal-to-noise ratio
Time domain

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10.3969/j.issn.1000-565X.2010.05.002

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title = "Elimination of carrier frequency offset in uplink OFDMA system based on TD-LMS algorithm",

abstract = "A time-domain adaptive algorithm based on least mean square (TD-LMS) is proposed to eliminate the interference due to the carrier frequency offset (CFO) from different users in uplink OFDMA (Orthogonal Frequency Division Multiple Access) system. In this algorithm, the CFO in time domain is estimated and is adjusted with an estimator. Then, the residual CFO is eliminated with TD-LMS scheme in time domain. Simulated results indicate that, ascompared with the algorithm based on least square, the proposed algorithm is effective in eliminating the CFO of users, with a gain of 3dB in the same simulation conditions.",

keywords = "Carrier frequency offset, Orthogonal frequency division multiple access, Signal-to-noise ratio, Time domain",

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T1 - Elimination of carrier frequency offset in uplink OFDMA system based on TD-LMS algorithm

AU - Guan, Qing Yang

AU - Zhao, Hong Lin

AU - Guo, Qing

PY - 2010/5

Y1 - 2010/5

N2 - A time-domain adaptive algorithm based on least mean square (TD-LMS) is proposed to eliminate the interference due to the carrier frequency offset (CFO) from different users in uplink OFDMA (Orthogonal Frequency Division Multiple Access) system. In this algorithm, the CFO in time domain is estimated and is adjusted with an estimator. Then, the residual CFO is eliminated with TD-LMS scheme in time domain. Simulated results indicate that, ascompared with the algorithm based on least square, the proposed algorithm is effective in eliminating the CFO of users, with a gain of 3dB in the same simulation conditions.

AB - A time-domain adaptive algorithm based on least mean square (TD-LMS) is proposed to eliminate the interference due to the carrier frequency offset (CFO) from different users in uplink OFDMA (Orthogonal Frequency Division Multiple Access) system. In this algorithm, the CFO in time domain is estimated and is adjusted with an estimator. Then, the residual CFO is eliminated with TD-LMS scheme in time domain. Simulated results indicate that, ascompared with the algorithm based on least square, the proposed algorithm is effective in eliminating the CFO of users, with a gain of 3dB in the same simulation conditions.

KW - Carrier frequency offset

KW - Orthogonal frequency division multiple access

KW - Signal-to-noise ratio

KW - Time domain

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DO - 10.3969/j.issn.1000-565X.2010.05.002

M3 - 文章

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SN - 1000-565X

VL - 38

SP - 6

EP - 10

JO - Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science)

JF - Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science)

IS - 5

ER -

Elimination of carrier frequency offset in uplink OFDMA system based on TD-LMS algorithm

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Keywords

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