概括
一个新的共同偏差数字子载波复合 (CB-DSCM) 方案使低成本光学系统中的同时高速通信和分布式光纤声学传感 (DAS) 成为可能. 这种集成实现了3.01Gb/s的数据速率和1m的空间分辨率.
科学领域:
- 光学通信是指光学通信的应用.
- 光纤传感传感器是指光纤传感器.
- 信号处理 信号处理
背景情况:
- 传感和通信 (ISAC) 的整合对于高速数据传输和无处不在的传感至关重要.
- 低成本的强度调制/直接检测 (IM/DD) 系统在共存的通信和传感信号方面面临着挑战.
- 现有的光学接入网络需要高效的方法来实现集成的传感和通信.
研究的目的:
- 为IM/DD短距离光传输系统中的ISAC提出一个新的共同偏差数字子载波复合 (CB-DSCM) 方案.
- 使用现有的调制器,实现通信和传感信号的同时传输.
- 为了实现分布式光纤声学传感 (DAS) 的高空间分辨率和延长检测距离.
主要方法:
- 一个CB-DSCM方案被提议用于ISAC信号生成.
- 线性频率调制 (LFM) 脉冲压缩,偏向于调制器的零点,用于DAS信号生成.
- 不对称剪切的光学正对角频率分割多重复合 (ACO-OFDM) 用于通信信号传输.
- 在接收器上使用一致检测.
主要成果:
- 在19.8公里的光纤链路上,CB-DSCM方案实现了3.01Gb/s的净比特率,比特错误率 (BER) 为6×10−4.
- 该系统成功地重建了振动信号,空间分辨率为1米.
- 通信和传感信号的同时传输在短距离光学系统中得到了证明.
结论:
- 拟议的CB-DSCM方案有效地将传感和通信集成到低成本IM/DD光学接入网络中.
- 这种方法可以实现高速数据传输和精确的光纤传感.
- 该CB-DSCM方案为未来的集成光学网络提供了可行的解决方案.
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