绿色LED OFDM LiFi系统的设计和性能评估,用于对电磁干扰敏感的医院网络
Ajay Sharma1, Lalit Garg1,2, Ahmad Atieh3
1Department of Computer Information Systems, Faculty of Information and Communication Technology, University of Malta, Msida, 2080 Malta.
概括
本研究为医院引入了一种安全的,高速的光效率 (LiFi) 系统,使用四方格振幅调制-直角频率分割多重复合 (4QAM-OFDM). 设计的LiFi系统增强了数据安全性,生物安全性和连接性,为WiFi提供了一个可持续的替代方案.
科学领域:
- 生物医学工程 生物医学工程
- 光学通信是指光学通信.
- 无线网络无线网络.
背景情况:
- 无线忠诚 (WiFi) 在医院环境中面临挑战,包括电磁干扰 (EMI) 和安全漏洞.
- 现有的LiFi系统需要对医疗保健应用进行优化,以确保安全性,安全性和高性能.
- 需要一个强大的通信系统,支持关键的医疗保健应用程序,如人工智能诊断和机器人手术.
研究的目的:
- 设计和模拟一个为安全,高速医院通信量身定制的四方格幅度调制-直角频率分割多重复合 (4QAM-OFDM) LiFi系统.
- 应对电磁干扰 (EMI) 等挑战,确保生物安全,并保证安全的医疗数据传输.
- 为医院网络实现高速,低延迟的连接,将LiFi定位为可行的WiFi替代品.
主要方法:
- 设计了一个4QAM-OFDM LiFi系统,采用符合光生物安全标准的500nm发光二极管 (LED).
- 采用了 1024 载波子直角频率分割多重复合 (OFDM) 方案,以减轻符号间干扰 (ISI).
- 使用OptiSystem 21和MATLAB R2024b模拟了该系统,使用正内负 (PIN) 光探测器和正方形解调器来接收和处理信号.
主要成果:
- 实现了卓越的光谱效率和显著降低的4.25E-3的比特错误率 (BER) 在30dBm,可减少到E-9的错误纠正.
- 对多路径扭曲和外部EMI表现出极好的耐受性,解决干扰问题并通过光学封闭增强安全性.
- 验证了系统的生物安全合规性,提高了能源效率,降低了功耗和二氧化碳排放.
结论:
- 设计的4QAM-OFDM LiFi系统为医院网络提供安全,高性能和生物安全的WiFi替代方案.
- 该系统对干扰的稳定性及其高数据速率使其适用于关键任务的医疗保健应用.
- 这种LiFi技术为医院通信基础设施的现代化提供了一个实用,可扩展和可持续的解决方案.
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