概括
使用非直角离散的里叶变换扩散的光子学辅助太赫兹传输,光谱高效的频率分割复杂化 (NO-DFT-S SEFDM) 显著提高了产能. 这种先进的方法可以为未来的6G无线网络实现更高的数据速率.
科学领域:
- 光学通信和无线网络的无线网络.
- 特拉赫兹 (THz) 技术的使用.
- 信号处理用于高速数据传输.
背景情况:
- 光学辅助的THz传输对于6G至关重要,它将THz频段与光学网络集成在一起.
- 光谱效率高的频率分割复杂化 (SEFDM) 提高了容量,特别是有限的THz带宽.
- 由于THz设备的成本限制,因此需要高效的复杂化技术.
研究的目的:
- 实验性比较传统的SEFDM与一种新的非直角DFT扩散的SEFDM (NO-DFT-S SEFDM).
- 评估不同信号检测算法的性能,以减轻载体间干扰 (ICI).
- 评估NO-DFT-S SEFDM在光子辅助THz系统中提供的容量和数据速率改进.
主要方法:
- 在光子辅助THz系统中对NO-DFT-S SEFDM和传统的SEFDM进行实验研究.
- 实现和比较沃尔特拉非线性均等 (VNLE),I / Q分离代检测 (ID) 和MAP-维特比算法用于ICI缓解.
- 使用高收益THz模块,如THz镜头和低噪音放大器 (LNA).
主要成果:
- NO-DFT-S SEFDM实现了31.3%的容量增长,超过直角频率分割复合 (OFDM) 和23.5%比传统的SEFDM (BER值2.4e-2@20%SD-FEC).
- 在300 GHz的100米无线THz链路上实现了168 Gbit/s的最大线路速率和129.2 Gbit/s的净速率.
- 与传统的SEFDM相比,NO-DFT-S SEFDM显示了峰值与平均功率比率 (PAPR) 的降低.
结论:
- NO-DFT-S SEFDM是提高光子辅助THz传输系统容量的有希望的技术.
- 研究的信号检测算法有效地减轻了带宽压缩系统中的ICI.
- 实验结果验证了NO-DFT-S SEFDM在未来6G通信中实现高数据速率的潜力.
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