概括
这项研究介绍了一种新的可见光纤通信 (VLFC) 系统,使用零填充的N-D无载波振幅和相位 (CAP) 调制来克服目前5G及以后移动前程解决方案的局限性. 该VLFC系统在多个道中实现了高数据速率和类似的性能.
科学领域:
- 光学通信是指光学通信.
- 无线网络无线网络.
- 信号处理 信号处理
背景情况:
- 基于公共无线电接口 (CPRI) 的传统移动前线 (FH) 难以满足5G技术的需求,例如大规模多输入多输出 (mMIMO),因为数据速率,带宽和连接的限制.
- 可见光通信 (VLC) 正在成为超越5G网络的有希望的补充技术,提供无许可频谱,高带宽和成本效益等优势.
- 现有的VLC系统在实际部署中面临低频噪声 (LFN) 的挑战.
研究的目的:
- 提出和演示一种使用可见光纤通信 (VLFC) 的新型移动前程解决方案.
- 引入一种创新的零填充N-D无载体振幅和相位 (CAP) 调制方案,以减轻VLFC系统中的LFN.
- 在数据速率,通道性能和波长相关特征方面评估拟议的VLFC系统的性能.
主要方法:
- 开发一种零填充的N-D CAP调制技术,特别是零填充的8-D CAP,旨在解决VLFC中的LFN.
- 实施一个VLFC系统,在红色 (635nm),绿色 (520nm) 和蓝色 (488nm) 波长的100米多模式光纤 (MMF) 上传输PAM8符号.
- 实验验证拟议的调制方案在提高通信性能和在多个通道上实现类似的比特错误率 (BER) 方面的有效性.
主要成果:
- 零填充技术显著提高了VLFC系统中的通信性能.
- 所有8个通道都表现出相似的BER性能,表明有效的信号传输.
- 由于MMF的减弱和分散,通信性能随着更长的波长而改善,在7%的高清FEC值下,实现了10.8 Gbps (红色),9.0 Gbps (绿色) 和7.5 Gbps (蓝色) 的数据速率.
结论:
- 拟议的零填充N-D CAP调制是使用VLFC的移动前线运输的有效解决方案,克服了LFN的挑战.
- 对于未来需要高数据速率和带宽的移动网络,VLFC系统提供了一个可行的替代方案.
- 该研究强调了VLC在下一代通信基础设施中的潜力.
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