Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers

Research Article

An Adaptive Anti-narrowband Jamming Receiver for CI/OFDM System

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  • @INPROCEEDINGS{10.1007/978-3-642-30493-4_35,
        author={Xiaohu Chen and Jun Wang and Pei Gao and ShaoQian Li},
        title={An Adaptive Anti-narrowband Jamming Receiver for CI/OFDM System},
        proceedings={Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers},
        proceedings_a={WICON},
        year={2012},
        month={10},
        keywords={Carrier interferometry narrowband jamming orthogonal frequency division multiplexing (OFDM)},
        doi={10.1007/978-3-642-30493-4_35}
    }
    
  • Xiaohu Chen
    Jun Wang
    Pei Gao
    ShaoQian Li
    Year: 2012
    An Adaptive Anti-narrowband Jamming Receiver for CI/OFDM System
    WICON
    Springer
    DOI: 10.1007/978-3-642-30493-4_35
Xiaohu Chen1,*, Jun Wang1,*, Pei Gao1,*, ShaoQian Li1,*
  • 1: University of Electronic Science and Technology of China
*Contact email: cxh4389@163.com, junwang@uestc.edu.cn, gaopei@uestc.edu.cn, lsq@uestc.edu.cn

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.