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随着多媒体技术的迅猛发展,人们对信息需求量的不断增加,目前的无线频谱资源已经无法满足人们的需求。利用ROF(光纤无线电)技术进行通信,能为系统提供更大的容量,ROF技术必将在未来网络融合中发挥巨大的作用。在基于光外差技术的ROF系统传输链路上分析了随着传输光纤的距离的变化,在接收端产生的毫米波信号的变化。在发射端主、从激光器频率差改变的情况下,接收端产生的毫米波信号的变化。
With the rapid development of multimedia technology, people’s demand for information has been increasing, and the current wireless spectrum resources have been unable to meet people’s needs. Using ROF (fiber optic radio) technology for communication, can provide greater capacity for the system, ROF technology will surely play a huge role in the future network convergence. Based on the optical heterodyne (ROE) transmission link, the variation of the millimeter wave signal generated at the receiving end with the variation of the distance of the transmitting optical fiber is analyzed. At the transmitting end, the variation of the millimeter wave signal generated at the receiving end from the change of the laser frequency difference.