Abstract
Most of carrier frequency offset (CFO) estimation methods for multi-band orthogonal frequency-division multiplexing (MB-OFDM) based ultra-wideband (UWB) systems focus on improving the robustness of CFO estimation. However, as the CFO between the transmitter and the receiver in MB-OFDM UWB systems is small, the accuracy of CFO estimation is also important. In this paper, a CFO estimator targeting at low complexity and high accuracy is proposed. A structure with dual auto-correlation (AC) is designed to improve the accuracy of CFO estimation. To maintain high robustness, a modified AC block, in which the samples that have been greatly affected by noise are removed, is proposed. The evaluation results show that the proposed CFO estimator has low implementation complexity, high accuracy and high robustness.
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Yin, XW., Tan, HZ. (2017). Low-Complexity and High-Accuracy Carrier Frequency Offset Estimation for MB-OFDM UWB Systems. In: Balas, V., Jain, L., Zhao, X. (eds) Information Technology and Intelligent Transportation Systems. Advances in Intelligent Systems and Computing, vol 454. Springer, Cham. https://doi.org/10.1007/978-3-319-38789-5_44
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DOI: https://doi.org/10.1007/978-3-319-38789-5_44
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