文章分析了用四波混频产生边带并传输基带信号的光纤无线通信(ROF)系统。该系统中心站处产生两对载波抑制边带，一对传输下行链路信号，另一对承载基带信号并在基站传输上行链路信号。通过仿真得到的系统光谱图、误码率曲线表明：加入基带信号传输后，下行信号的能量损耗不变，基带信号和上行信号却有较好的抗色散能力。

A Radio-Over-Fiber (ROF) communication system is given and analyzed, in which Four-Wave Mixing (FWM) is used to generate sideband and transmit baseband signals. Two pairs of optical carrier suppression sidebands are generated in its central station, one transmits the downlink signals and the other carries the baseband signals and transmits the uplink signals at the base station. The system spectrum and Bit Error Ratio (BER) curve obtained by simulation indicate that when the baseband signals are coupled, the energy penalty of the downlink signals remains unchanged, while the baseband and uplink signals have better dispersion resistance.