相关实验视频
Updated: Jul 3, 2025

07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
10.8K
概括
一个新的两级查看表 (LUT) 方案增强了光子毫米波 (MMW) 通信. 该系统提高了信号传输质量和接收器灵敏度,在自由空间光学 (FSO) 通道中实现了错误校正值.
科学领域:
- 光学通信是指光学通信.
- 无线通信系统无线通信系统
- 信号处理 信号处理
背景情况:
- 光子毫米波 (MMW) 系统具有高带宽潜力.
- 方格振幅调制 (QAM) 对于数据编码至关重要.
- 自由空间光学 (FSO) 通道面临着来自流和非线性性的挑战.
研究的目的:
- 为光子16-QAM MMW系统引入一个双阶段查看表 (LUT) 方案.
- 为了提高信号传输性能和接收器灵敏度.
- 为了减轻FSO通信中的通道损伤.
主要方法:
- 实现了发射器侧LUT用于自适应幅度调整,消除了复杂的计算.
- 使用接收端的LUT进行非线性频道扭曲后补偿.
- 使用比特误差比率 (BER) 和前置错误纠正 (FEC) 值评估系统性能.
主要成果:
- 在FSO通道中,在2/4 GBaud (弱流) 和2 GBaud (中等流) 时,实现了低于HD-FEC值 (3.8 × 10−3) 的信号传输.
- 使用第二阶段的LUT,在2GBaud (中等流) 时,光学接收器的灵敏度提高了0.15dB.
- 使系统能够达到SD-FEC值 (4.2 × 10-2) 的4 GBaud与第二阶段的LUT.
结论:
- 拟议的两阶段LUT方案有效地提高了光子16-QAM MMW通信性能.
- 该系统表现出对道流和非线性性的强度.
- 这种方法提供了一个可行的解决方案,可以提高FSO系统的数据速率和可靠性.
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