基于继电器的秘密通信的性能比较:DF,CF和AF
1Department of Mobile Convergence Engineering, Hanbat National University, Daejeon 34158, Republic of Korea.
Sensors (Basel, Switzerland)
|November 14, 2023
概括
本研究比较了解码和转发 (DF),压缩和转发 (CF) 和放大和转发 (AF) 继电系统中的秘密通信性能. 在特定功率条件下,CF或AF继电器通常优于DF继电器,从而影响隐蔽速率的优化.
科学领域:
- 无线通信系统无线通信系统
- 信息理论是信息理论.
- 信号处理 信号处理
背景情况:
- 秘密通信对于安全的数据传输至关重要.
- 继电器系统提高了通信范围和可靠性.
- 在保持通信速度的同时优化隐蔽性是一个关键的挑战.
研究的目的:
- 分析和比较用于秘密通信的解码和转发 (DF),压缩和转发 (CF) 和放大和转发 (AF) 继电系统的性能.
- 优化公开和隐藏消息之间的功率分配,以最大限度地提高隐藏速率,考虑到继电器的检测错误概率 (DEP).
- 进行DF,CF和AF系统的延迟感知比较,并检查它们的非对称行为.
主要方法:
- 在DF,CF和AF中继架构中调查了秘密通信性能.
- 优化了电力分配,以最大限度地提高隐蔽率,同时最大限度地减少继电器上的DEP.
- 导出封闭形式的隐蔽率并进行延迟意识的比较.
- 在各种道模型和非对称条件下分析了系统性能.
主要成果:
- 压缩和转发 (CF) 或放大和转发 (AF) 继电器在高源传输功率或低继电器传输功率下通常优于解码和转发 (DF) 继电器.
- 在DF,CF和AF中继的性能层次对系统参数 (如处理延迟,公共消息的服务质量和DEP值) 很敏感,特别是在高中继传输功率下.
- 数字结果验证了不同道模型的性能比较.
结论:
- 隐蔽通信的DF,CF和AF中继系统之间的选择主要取决于功率限制和系统参数.
- 最佳的功率分配策略对于在继电辅助的秘密通信系统中最大限度地提高隐蔽速率至关重要.
- 进一步的研究可以探索更复杂的中继协议和现实的通道条件,以提高秘密通信安全性.
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