Abstract
To overcome the inherent shortcomings of orthogonal frequency division multiplexing (OFDM) system, a so-called carrier interferometry OFDM (CI/OFDM) system has been proposed. In CI/OFDM system, data symbols are spreading over all OFDM subcarriers through CI coding so that better frequency diversity gain and lower peak to average power ratio (PAPR) can be obtained. In this paper, we investigated the anti-narrowband jamming performance of CI/OFDM system. We analyzed the post-detection signal-to-jamming plus noise ratio (SJNR) of two kinds of CI/OFDM receiver schemes, which are differentiated each other based on whether the jamming subcarriers are discarded. By comparing their performance in different jamming scenarios, we concluded that each scheme can only work well under specified suitable jamming scenario, in which the one outperforms the other. According to this observation, we further propose an adaptive anti-narrowband jamming CI/OFDM receiver, which adjusts the detection scheme according to the jamming power and bandwidth, to match the corresponding jamming scenarios. Simulation results are provided to validate our scheme.
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© 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering
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Chen, X., Wang, J., Gao, P., Li, S. (2012). An Adaptive Anti-narrowband Jamming Receiver for CI/OFDM System. In: Ren, P., Zhang, C., Liu, X., Liu, P., Ci, S. (eds) Wireless Internet. WICON 2011. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 98. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30493-4_35
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DOI: https://doi.org/10.1007/978-3-642-30493-4_35
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-30492-7
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