A full-duplex radio-over-fiber link with 12-tupling mm-wave generation and wavelength reuse for upstream signal
A full-duplex radio-over-fiber link with 12-tupling mm-wave generation and wavelength reuse for upstream signal
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DOI：
10.1016/j.optlastec.2011.03.003
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发表时间：
2011-10
影响因子：
5
通讯作者：
Yang Chen;A. Wen;L. Shang;Yong Wang
中科院分区：
文献类型：
--
作者：
Yang Chen;A. Wen;L. Shang;Yong Wang
研究了一种从5GHz射频信号源产生60GHz毫米波的全双工光纤无线电（RoF）链路。在RoF下行链路中，RF振荡器所需的频率大大降低。由于光载波不被下行数据调制，因此其一部分被重新用于承载上行数据，并且上行数据使用光单边带调制传输到中心站。以这种方式，单个波长用于下行和上行传输。在此基础上，搭建了一条全双工RoF链路，并对其传输性能进行了分析。理论分析和数值仿真表明，当60 GHz DSB光毫米波信号沿光纤沿着传输时，下行信号不仅能消除码沿时移引起的码形失真，而且能减小衰落效应的影响，上行信号则不受衰落效应和码沿时移的影响。
A full-duplex radio-over-fiber (RoF) link with a novel scheme to generate 60GHz mm-waves from a 5GHz RF signal source is investigated. In the RoF downlink, the required frequency of the RF oscillator is reduced greatly. Since the optical carrier is not modulated by downstream data, part of it is reused to carry upstream data and the upstream data is transmitted to the central station using optical single-sideband modulation. In this way, a single wavelength is used for both downstream and upstream transmissions. Based on this scheme, a full-duplex RoF link is built and its transmission performance is analyzed. Theoretical analysis and numerical simulation show that the downstream signal cannot only eliminate code form distortion caused by time shift of the code edges, but also reduce the influence of the fading effect as the 60GHz DSB optical mm-wave signal is transmitted along the fiber, and the upstream signal is immune to both fading effect and time shift of the code edges.