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Design and Performance Evaluation of OFDM-Based Wireless Services Employing Radio over Optical Wireless Link

机译：通过光无线链路进行无线电的基于OFDM的无线服务的设计和性能评估

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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.
机译：本文研究了一种基于正交频分复用（OFDM）的无线服务，该无线服务采用了基于光无线的无线电（RoOW）来获得高性能的传输，同时消除了可能对室内通信系统中的电子医疗设备造成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，并将OFDM RF信号假定为子载波。考虑到OFDM信号的峰值削波和不同无线电衰落场景的影响，通过仿真评估了传输性能。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。它还显示了当接收到的光功率大于-20dBm（这是一个非常实用的功率水平）时，BER的值几乎与光功率无关，并且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，并且只要符合无线电环境，建议的中继系统就是非常实用的系统。我们认为，所提出的系统是一种实用的系统，可以为RF敏感区域提供低成本，高质量的无线服务。

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