Abstract A modified Henon chaos mapping-based Tone Reservation (TR) method is presented to simultaneously improve the performance and security of orthogonal frequency division multiplexing passive optical network (OFDM-PON) system, which did not need any redundant sideband information. With the aid of high sensitivity of the low bits in the decimal part of chaos, the modified Henon chaos is constructed iteratively by extracting low bits of the previous chaotic value, which enhances the complexity and randomness of chaotic sequence values. And, by utilizing this chaos, the permutation vector can be conducted and is employed to scramble the distribution of reserved tones on the frequency domain and OFDM frames respectively, which can simultaneously achieve the peak-to-average power ratio (PAPR) reduction and data encryption. The feasibility of this scheme has been experimentally proven in 10-Gb/s OFDM-PON system through 20km fiber (SMF) transmission. Experimental results manifest that, compared to the common OFDM-PON system, the proposed scheme can achieve the ∼ 3dB PAPR reduction and ∼ 1dB BER improvement.

中文翻译：

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基于改进Henon混沌的TR的OFDM-PON系统安全方案

摘要 为了同时提高正交频分复用无源光网络(OFDM-PON)系统的性能和安全性，该系统不需要任何冗余边带信息，提出了一种改进的基于Henon混沌映射的音调保留(TR)方法。借助混沌小数部分低位的高灵敏度，通过提取前一混沌值的低位迭代构建修正Henon混沌，增强了混沌序列值的复杂性和随机性。并且，利用这种混沌，可以进行置换向量分别对频域和OFDM帧上的保留音分布进行加扰，可以同时实现峰均功率比（PAPR）降低和数据加密。该方案的可行性已在 10-Gb/s OFDM-PON 系统中通过 20km 光纤 (SMF) 传输得到实验证明。实验结果表明，与普通的OFDM-PON系统相比，所提出的方案可以实现~3dB PAPR降低和~1dB BER改善。