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A Reduced Complexity Joint Cell Index and Carrier Frequency Offset Detection for OFDM-based LTE Systems

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Abstract

In cellular systems, user equipment must perform the cell search procedure in order to acquire symbol timing, frame timing, carrier frequency offset (CFO), sector cell index (CID) and group CID. This paper proposes a low-complexity sector CID and CFO detection scheme in a long term evolution downlink system. To achieve low complexity, a primary synchronization signal used for parameter estimation is grouped into a number of subsets so that the phase of pilots in each subset is unique. The performance and complexity of the proposed joint detection scheme are compared with those of the conventional joint detection schemes. We show via simulations that such a design achieves exactly the same detection accuracy as that of the conventional joint detection schemes with one half of complexity being saved.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2014R1A1A2057122).

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Authors and Affiliations

  1. Department of Computer Engineering, Sejong University, Seoul, 143-747, Korea

    Won-Jae Shin & Young-Hwan You

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  1. Won-Jae Shin
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  2. Young-Hwan You
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Correspondence to Young-Hwan You.

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Shin, WJ., You, YH. A Reduced Complexity Joint Cell Index and Carrier Frequency Offset Detection for OFDM-based LTE Systems. Wireless Pers Commun 83, 813–823 (2015). https://doi.org/10.1007/s11277-015-2427-x

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  • DOI: https://doi.org/10.1007/s11277-015-2427-x

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