The invention belongs to the field of optical fiber communication and optical network transmission signal equalization processing technology, in particular to an optical fiber communication system based on single sideband modulation of single carrier frequency domain equalization. The present invention is in the transmission system of optical fiber communication, the use of DSP high-speed digital signal processing method, the direct detection of single sideband modulation signals received by FFT transformation from time domain to frequency domain, the equalization module designed for transmission link balance compensation in frequency domain. Finally, the signal equalization module after the IFFT transformation from frequency domain to time domain, get the final balance signal. The invention can improve the transmission quality of the signal, and has the capability of compensating the signal equalization of the adaptive optical fiber transmission link.
【技术实现步骤摘要】
【技术保护点】
一种基于单边带调制单载波频域均衡的光纤通信系统,其特征在于该系统包括:单边带信号发射机、单模光纤链路、直接检测接收机和级联的单载波的频域均衡模块;其中: 所述的单边带信号发射机,采用调制法产生单边带信号,其包括一个基带信号源,用于产生所需要传输的基带信号;一个连续工作的固定波长的激光源,作为光载波;一个单边带信号调制器模块,用于进行光信号单边带外调制; 所述的单边带信号调制器模块,基于信号的希尔伯特变换有限冲击响应数字滤波器,利用一个双臂的马赫哲德调制器级联一个相位调制器产生单边带信号;信号与信号的希尔伯特变换分别驱动双臂马赫哲德调制器和相位调制器;所述的双臂马赫哲德的 ...
【技术特征摘要】
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