Abstract
In underwater acoustic orthogonal frequency division multiplexing (OFDM) communication system, channel variations would introduce inter-carrier interference (ICI). This gets more severe as mobile speed, carrier frequency or OFDM symbol duration increases. In this paper, we propose a kind of parallel iterative ICI cancellation algorithm to combat that problem. The proposed method extracts channel variations from the adjacent OFDM symbols, and constantly improves the estimation accuracy of ICI through iteration. Finally, simulation and trial in real lake channel verify the availability and stability of the algorithm in the underwater acoustic time varying channel. In addition, this algorithm avoids the matrix inversion, reducing the complexity of the algorithm, and has the obvious advantage in accuracy and speed.
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Acknowledgements
The authors gratefully acknowledge the support of the National Nature Science Foundation of China (Nos. 11274079, 61771154 and 61301095) as well as The Postdoctoral Science Research (No. HLJR20120008), the foundation of State Key Laboratory (No. 2010C802001), The Postdoctoral Science Research of Heilongjiang Province of China (No.3236330012), the Nature Science Foundation of Heilongjiang Province of China (No. F201408).
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Ma, X., Wang, T., Lin, Y. et al. Parallel Iterative Inter-carrier Interference Cancellation in Underwater Acoustic Orthogonal Frequency Division Multiplexing. Wireless Pers Commun 102, 1603–1616 (2018). https://doi.org/10.1007/s11277-017-5215-y
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DOI: https://doi.org/10.1007/s11277-017-5215-y