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Joint Carrier Frequency Offset Estimation and Compensation for Downlink Group-Orthogonal Multicarrier CDMA

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Abstract

A carrier frequency offset (CFO) estimation and compensation method is proposal for downlink group-orthogonal multicarrier code-division multiple-access (GO-MC-CDMA) system. The proposed algorithm has taken into consideration both the inherent orthogonality among subcarriers of different groups of GO-MC-CDMA system and the characteristics of Fast Fourier Transform (FFT) demodulation are taken into consideration. The CFO estimation is achieved by searching the value which minimizes the cost function constructed in terms of performing FFT on the interfering signals. Simulation results show that the estimated value of CFO is very close to the real value for the downlink GO-MC-CDMA system. In addition, it is shown that the bit error rate (BER) performance is improved significantly by CFO compensation.

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Authors and Affiliations

  1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, 100876, China

    Wei Yang

  2. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, 100044, China

    Wei Yang & Junying Liu

  3. National Mobile Communications Research Laboratory, Southeast University, Nanjing, 210096, China

    Changlong Xu & Shixin Cheng

Authors
  1. Wei Yang
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  2. Junying Liu
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  3. Changlong Xu
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  4. Shixin Cheng
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Correspondence to Wei Yang.

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Yang, W., Liu, J., Xu, C. et al. Joint Carrier Frequency Offset Estimation and Compensation for Downlink Group-Orthogonal Multicarrier CDMA. Wireless Pers Commun 62, 107–116 (2012). https://doi.org/10.1007/s11277-010-0041-5

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  • DOI: https://doi.org/10.1007/s11277-010-0041-5

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