Joint PAPR Reduction and Physical Layer Security Enhancement in OFDMA-PON
Joint PAPR Reduction and Physical Layer Security Enhancement in OFDMA-PON
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DOI：
10.1109/lpt.2016.2522965
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发表时间：
2016-05
影响因子：
2.6
通讯作者：
Wei Zhang;Chongfu Zhang;Chen Chen-Chen;W. Jin;K. Qiu
中科院分区：
文献类型：
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作者：
Wei Zhang;Chongfu Zhang;Chen Chen-Chen;W. Jin;K. Qiu
针对正交频分多址无源光网络（OFDMA-PON）中峰均功率比（PAPR）降低和物理层安全增强的问题，提出了一种基于混沌IQ加密的最优帧传输技术。利用混沌IQ加密技术提高了物理层的安全性。在加密中，正交幅度调制（QAM）符号的同相（I）和正交相位（Q）部分分别用两个相位序列编码，这两个相位序列使用2-D逻辑映射生成。加密的OFDM符号包括OFDM帧，并且具有最小PAPR的帧被发送到光网络单元侧。因此，传输的OFDM信号具有联合的低PAPR和高物理层安全性。在演示中，一个11.32 Gb/s的加密16 QAM OFDM信号已被实验传输超过25公里的标准单模光纤强度调制/直接检测OFDMA-PON。
For joint peak-to-average power ratio (PAPR) reduction and physical layer security enhancement, we propose a chaos IQ-encryption-based optimal frame transmission technique in an orthogonal frequency-division multiple access-based passive optical network (OFDMA-PON). The chaos IQ-encryption technique is utilized to enhance the physical layer security. In encrypting, the in-phase (I) and quadrature-phase (Q) parts of the quadrature amplitude modulation (QAM) symbols are coded with two phase sequences separately, which are generated using a 2-D logistic map. The encrypted OFDM symbols comprise an OFDM frame, and the frame with the minimum PAPR is transmitted to the optical network unit side. Thus, the transmitted OFDM signal is of a joint low PAPR and high physical layer security. In the demonstration, an 11.32-Gb/s encrypted 16 QAM OFDM signal has been experimentally transmitted over 25-km standard single mode fiber in an intensity-modulation/direct-detection OFDMA-PON.