概括
本研究介绍了双混沌加密和一个新的随机交联分区时间分割 (RIPTS) 方案,用于正交时频空间-索引调制 (OTFS-IM) 系统. 这些方法提高了物理层的安全性,并降低了峰值与平均功率比率 (PAPR).
科学领域:
- 光学通信系统 光学通信系统
- 信号处理 信号处理
- 信息安全信息安全.
背景情况:
- 正交时频空间指数调制 (OTFS-IM) 系统在物理层安全性 (PLS) 和峰值与平均功率比 (PAPR) 方面面临挑战.
- 对于现代通信网络,包括被动光学网络 (PON),高效和安全的数据传输至关重要.
研究的目的:
- 为OTFS-IM系统提出一种新的双混沌加密方法,结合PAPR优化的加密方案.
- 为了提高OTFS-IM PON系统的物理层安全性和传输效率.
- 评估PAPR和载体间干扰 (ICI) 的性能改进.
主要方法:
- 应用到OTFS-IM的索引和数据位的双混沌加密.
- 随机交叉分区时间分割 (RIPTS) 用于PAPR优化和自相对应减少.
- 在PON设置中通过背对背 (B2B) 和80公里标准单模式光纤 (SSMF) 传输进行系统验证.
主要成果:
- 与非优化的OTFS-IM相比,RIPTS方案提高了4.3dB的PAPR性能.
- RIPTS的表现比现有方案 (PTS,IPTS,RPTS) 的表现分别高出0.8dB,0.6dB和0.5dB,同时降低了ICI.
- 双混沌加密提供了高达1090的大量密钥空间,确保了强大的安全性.
结论:
- 拟议的双混沌加密和RIPTS方案为OTFS-IM PON系统中的PLS挑战提供了有效的解决方案.
- 综合方法通过提高PAPR和安全性来显著优化系统传输性能.
- 这项研究有助于开发更安全,更有效的光通信技术.
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