概括
这项研究引入了相调,以抑制高功率无线电光纤链路的信号噪声比下降,从而实现了极简的无线基站. 该方法显著提高了下一代宽带通信的信号质量.
科学领域:
- 光电学是指光电子产品.
- 光学通信是指光学通信.
- 无线通信系统无线通信系统
背景情况:
- 下一代无线系统的目标是没有功率放大器的极简基站.
- 高功率无线电光纤 (RoF) 链路对于宽带无线通信至关重要,但面临信号噪声比 (SNR) 恶化.
- 二次布里卢恩散射是高功率,长距离的RoF链路的一个关键挑战.
研究的目的:
- 提出和演示一种方法来抑制二次Brillouin散射引起的SNR恶化在高功率,长距离的RoF链路.
- 为了实现未来宽带通信系统的极简无线基站.
主要方法:
- 使用由侧面信号驱动的相调节来抑制二次Brillouin散射.
- 进行了10公里单模光纤 (SMF) 链路的概念验证实验.
- 测量各种无线信号的SNR,Brillouin值和错误向量大小 (EVM).
主要成果:
- 随着相位调节,布里卢恩值增加了超过5dB.
- 在22dBm注入光功率下,SNR提高了31dB.
- 对于256-QAM信号的错误向量大小 (EVM) 从31.71%提高到0.62%.
- 实现了64-QAM OFDM信号 (10GHz,400MHz) 的高质量传输.
结论:
- 阶段调制有效地抑制了高功率RoF链接中的二次布里卢恩散射.
- 拟议的方法增强了SNR和EVM,这对于宽带无线信号至关重要.
- 这种技术有助于开发极简的无线基站和高性能RoF系统.
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