实时演示双孔连贯数字,将自由空间光学传输与实值的MIMO自适应等分器相结合
Optics letters
|February 15, 2024
概括
一个新的自适应等分器有效地结合了来自多个光圈的信号,克服了光通信中的流挑战. 这项技术即使在动态,强的流条件下也实现了高组合效率.
科学领域:
- 光学通信系统 光学通信系统
- 信号处理 信号处理
- 适应式均等化 适应式均等化
背景情况:
- 多孔连贯数字组合系统比单孔系统具有优势,包括深度色缓解和可扩展性.
- 从多个光圈中有效地组合信号,由于静态偏斜不匹配和时间变化的闪,会带来挑战.
研究的目的:
- 引入一种新的实值大规模阵列多输入多输出 (MIMO) 适应等分器,用于同时进行多孔通道等分和组合.
- 为了验证这种结合技术的可行性,在一个原则证明系统中.
主要方法:
- 开发和实施一个实值的大型阵列MIMO自适应等分器.
- 使用MIMO 4x2等分器在2.5-GBaud QPSK调制FPGA两孔连贯接收器中的实验验证.
- 在模拟模拟大气效应的动态流条件下的测试.
主要成果:
- 在静态流条件下没有观察到组合效率的降低,达到硬决策前置错误校正 (HD-FEC) 极限.
- 在动态中等流方面实现了95%的效率,在动态强流方面达到88%的效率.
- 证明了拟议的自适应等分器在克服闪光和偏斜不匹配方面的有效性.
结论:
- 拟议的实值大规模阵列MIMO自适应等分器是多孔通道等分和组合的可行解决方案.
- 这项技术有效地减轻了光通信系统中静态偏斜不匹配和动态流所带来的挑战.
- 这种方法具有显著的潜力,可以提高未来光通信网络的性能和可靠性.
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