TY - JOUR A2 - Xu, Ding AU - Zhang, Shuai AU - Huang, li群AU - Zhu，Mingxu PY - 2021 DA - 2021/01/11 TI -联合加密方案基于混沌DCT矩阵和SLM算法OFDM-PON系统SP - 8840664六世- 2021 AB -为了有效地解决数据传输安全的问题和peak-to-average比率(地表铺面)正交频分复用无源光网络(OFDM-PON)transmission system, in this paper, a joint encryption scheme of discrete cosine transform (DCT) and selective mapping (SLM) based on chaotic mapping is proposed. In this scheme, the chaotic sequence of a 3D Lorenz chaotic system is used as the row and column index of the DCT matrix and the phase factor of SLM to resist selective plaintext attack, and the system encryption is realized while reducing PAPR. The theoretical analysis and numerical simulation show that the common OFDM-PON, the proposed algorithm, can obtain a PAPR suppression gain of ∼4.8 dB and improve the receiver sensitivity by ∼4 dB 的误码率 ＠ 10 − 3. ．此外，研究表明，随着DCT矩阵的行/列索引不匹配度的增加，系统的误码率逐渐增加。在20km标准单模光纤上成功模拟了8gb /s 16-QAM光OFDM信号的加密数据传输，证明了所提出的安全传输具有良好的保密性。SN - 1574-017X UR - https://doi.org/10.1155/2021/8840664 DO - 10.1155/2021/8840664