Abstract
OFDM technology is the simultaneous transmission of signals in multiple overlapping channels. In order to correctly receive, the orthogonality of subcarriers must be ensured strictly. However, due to Doppler frequency shift and transceiver of the crystal is not exactly the same, there are certain carrier frequency deviation, which will destroy the orthogonality of the subcarrier wave. The frequency difference influence of phase also has cumulativity, accurate frequency synchronization is the precondition for the normal work of OFDM system. In the text, a typical data-assisted carrier synchronization algorithm is analyzed for the carrier synchronization problem in OFDM system. We studied the improved algorithm which is based on the average algorithm of training symbols, and the performance is compared by simulation analysis. Experiments show that the improved carrier synchronization algorithm is superior to the typical algorithm and has low complexity.
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Acknowledgments
This paper is funded by the International Exchange Program of Harbin Engineering University for Innovation Oriented Talents Cultivation, Nation Nature Science Foundation of China (No. 61401115), Nation Nature Science Foundation of China (No. 61301095), Nation Nature Science Foundation of China (No. 61671167).
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© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Ma, Z., Dou, Z., Li, Z. (2018). Research on OFDM Carrier Synchronization. In: Sun, G., Liu, S. (eds) Advanced Hybrid Information Processing. ADHIP 2017. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 219. Springer, Cham. https://doi.org/10.1007/978-3-319-73317-3_49
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DOI: https://doi.org/10.1007/978-3-319-73317-3_49
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