Design and Performance Evaluation of OFDM- Based Wireless Services Employing Radio over Optical Wireless Link
Design and Performance Evaluation of OFDM- Based Wireless Services Employing Radio over Optical Wireless Link
复制标题
采用无线电光无线链路的基于 OFDM 的无线服务的设计和性能评估
DOI：
10.5121/ijwmn.2011.3514
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
S. Shimamoto
中科院分区：
文献类型：
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作者：
Jiang Liu;Wasinee Noonpakdee;S. Shimamoto
本文研究了一种基于正交频分复用 (OFDM) 的无线服务，采用光无线无线电 (RoOW) 来获得高性能传输，同时消除室内通信系统中电子医疗设备可能受到无线电波干扰的缺点。考虑使用RF子载波调制的光强度调制直接检测(IM/DD)系统，并且假设OFDM RF信号作为子载波。考虑到OFDM信号削峰和不同无线电衰落场景的影响，通过仿真评估传输性能。仿真结果表明，调制指数m、光发射功率、无线电环境是影响通信性能的重要因素。它还表明，当接收光功率大于-20dBm（这是一个非常实用的功率水平）时，BER 值几乎与光功率无关，无线电环境变得更加重要。这意味着室内光无线通信（OWC）具有很高的传输性能，并且只要无线电环境合格，所提出的中继系统就是一个非常可用的系统。我们相信所提出的系统是一个实用的系统，可以为射频敏感区域提供低成本、高质量的无线服务。
This paper studies an Orthogonal Frequency Division Multiplexing (OFDM) based wireless services employing Radio over Optical Wireless (RoOW) to get a high performance transmission while eliminating the drawback of possible radio wave interference to electro-medical apparatus in indoor communication system. An optical Intensity-modulated Direct-detection (IM/DD) system using RF subcarrier modulation is considered and OFDM RF signals are assumed as the subcarrier. The transmission performance is evaluated by simulation considering the influence of peak clip of OFDM signal and different radio fading scenarios. Simulation result shows that the modulation index m, optical transmit power, radio environments are important factors which affect the communication performance significantly. It also shows when the received optical power is larger than -20dBm, which is a very practical power level, the value of BER becomes almost independent of the optical power and the radio environment becomes more important. That means the indoor optical wireless communication (OWC) has high transmission performance and the proposed relay system is a very available system as long as the radio environment is eligible. We believe that the proposed system is a practical system and can provide a low-cost, high-quality wireless services for RF sensitive areas.
DOI：
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发表时间：
1999-12
期刊：
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影响因子：
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作者：
R. V. Nee;R. Prasad
通讯作者：
R. V. Nee;R. Prasad