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A novel chaos‐based selected mapping (SLM) scheme is proposed for physical layer security in OFDM‐PONs, where a Hénon chaos map is employed to create a large key space for OFDM data encryption. The transmission performance is significantly improved due to the peak‐to‐average power ratio reduction in the SLM scheme. High quality 8.9 Gbit/s 16‐QAM OFDM encrypted data transmission is demonstrated over a 20 km single‐mode fibre.
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Hu et al. (2015) studied this question.
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