概括
本研究引入了对无线电光纤 (RoF) 链路的双侧带接收方案,以提高噪声限制系统的性能. 这款新型接收器采用了两种光学侧带,提高了信号噪声比 (SNR) 高达3dB.
科学领域:
- 光学通信是指光学通信的应用.
- 无线电通过光纤 (RoF) 技术.
- 信号处理 信号处理
背景情况:
- 当前的无线电光纤 (RoF) 系统在信号接收过程中通常只使用两个生成的光学侧带中的一个.
- 这导致了低于最佳的能源利用,并限制了RoF链路的潜在性能.
- 在RoF接收器中现有的电光调制器会因丢弃一个侧带而导致能量损失.
研究的目的:
- 引入和评估一个新的双侧带接收方案用于无线电光纤 (RoF) 链路.
- 通过利用两个光学侧带来提高噪声限制的RoF系统的性能.
- 为了证明RoF系统的信号噪声比 (SNR) 显著改善.
主要方法:
- 为RoF链接开发双侧带接收器架构.
- 在背靠背的实验室设置中进行实验验证.
- 在228GHz的1400米自由空间通道上,在一个全光-无线电-频率-光学传输链上进行测试.
主要成果:
- 在噪音限制系统中,实现了高达3dB的性能改进.
- 在实验室背靠背的实验中,证明了2.97dB的改善.
- 在1400米的自由空间链路上,观察到的SNR改进高达2.6dB的228GHz和48Gbaud4QAM.
结论:
- 双侧带接收方案有效地利用了两个光学侧带,克服了传统RoF接收器的局限性.
- 拟议的方法为RoF系统提供了显著的性能提升,特别是在噪声有限的条件下.
- 这种方法证明了高频,远程RoF通信的实际可行性.
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