室内无线光通信系统的双链路配置与仿真
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摘要
在室内无线光点对点通信过程中,随时存在受障碍物遮挡而中断通信的可能性。采用双链路来交替传输光信号是最佳解决方案。双链路为直射链路和漫射链路,双信道为直射信道和漫射信道。两者的工作状态可以自动切换,交替工作。仿真结果表明:这种交替工作方式可以使光信号克服障碍物阻挡,实现不间断通信。
In the process of indoor wireless optical point-to-point communication, there is always the possibility of communication interruption due to obstacles. It is the best solution to transmit optical signals alternately by using two links mode. Two links are direct link and diffuse link, and two channels are direct channel and diffuse channel. The working state of the two systems can be automatically switched and alternated. The simulation results show that the optical signal can overcome obstacles and achieve uninterrupted communication.
In the process of indoor wireless optical point-to-point communication, there is always the possibility of communication interruption due to obstacles. It is the best solution to transmit optical signals alternately by using two links mode. Two links are direct link and diffuse link, and two channels are direct channel and diffuse channel. The working state of the two systems can be automatically switched and alternated. The simulation results show that the optical signal can overcome obstacles and achieve uninterrupted communication.
引文
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[2]ALAMOUTI S M.A simple transmit diversity technique for wireless communications[J].IEEE J Sel Area Commun,1998,16(8):1251-1458.
[3]HE Peinan.A New Design of Devices and Links Configuration for Indoor Optical Wireless Communications[D].PhDthesis:University of Warwick,2015.
[4]何沛南,何明友.室内无线光通信正交空时编码及调制技术[J].航空计算技术,2018,48(1):127-134.
[5]ZENG L,O'BRIEN D C,MINH H,et al.High data rate multiple input multiple output(MIMO)optical wireless communications using white LEDlighting[J].IEEE Journal on,Selected Areas in Communications,2009,27(9):1654-1662.
[6]KOMINE T,NAKAGAWA M.Fundamental analysis for visible-light commtmication system using LED lights[J].IEEE Transactions on,Consumer Electronics,2004,50(1):100-107.