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首页> 外文期刊>International journal of systems,control and communications >Performance improvement of hybrid OFDM-FSO system using modified OFDM receiver
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Performance improvement of hybrid OFDM-FSO system using modified OFDM receiver

机译：使用改进的OFDM接收器进行DSDM-FSO系统的性能改进

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摘要

Recently, free-space optical (FSO) communication systems have enlarged research and gained popularity because of its inherent advantages. The orthogonal frequency division multiplexing (OFDM) technique helps to improve the performance of the FSO communication system by using a simultaneous multi-carrier transmission scheme. The performance of the hybrid FSO-OFDM system is dependent on different parameters such as the number of sub-carriers, the nature of the laser beam, applied base band modulation, and atmospheric turbulence conditions etc. In this work, a modified OFDM receiver is proposed that improves the bit error rate (BER) significantly. This paper analyses the performance of the FSO communication system by using the proposed modified OFDM receiver over Gamma-Gamma fading channel under different weather and atmospheric turbulence conditions. Simulation results exhibit a significant improvement in the BER performance compared to the existing OFDM receivers for the FSO communication system.
机译：最近，由于其固有的优点，自由空间光学（FSO）通信系统具有扩大的研究和受欢迎程度。正交频分复用（OFDM）技术有助于通过使用同时多载波传输方案来提高FSO通信系统的性能。混合动力FSO-OFDM系统的性能取决于诸如子载波的数量，激光束，应用基带调制和大气湍流条件等的不同参数。在这项工作中，改进的OFDM接收器是建议显着提高误码率（BER）。本文通过在不同天气和大气湍流条件下使用伽马 - 伽马褪色通道的建议改造的OFDM接收器分析了FSO通信系统的性能。仿真结果与FSO通信系统的现有OFDM接收器相比，BER性能的显着改善。

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