【摘要】 提出一种224Gb/s 16QAM Nyquist偏振复用(PDM)相干光通信系统。采用基于数据辅助的信道估计及频域均衡方法实现对系统信道损伤的补偿。研究了普通的频域均衡(FDE)及重叠的频域均衡(OFDE)对系统传输性能的影响,对采用FDE和OFDE均衡的16QAM Nyquist PDM信号分别经过480km和640km标准单模光纤(SSMF)传输后的性能进行了仿真。更多还原

【Abstract】 A 224Gb/s 16 QAM Nyquist polarization-division multiplexing(PDM) coherent communication system is proposed. Data-aided channel estimation and frequency equalization are adopted to compensate the channel distortion. The effect of overlapping frequency domain equalization(OFDE) on the transmission performance is studied by simulation compared with frequency domain equalization(FDE), by using FDE and OFDE balanced, it simulated 16 QAM Nyquist product data management(PDM) signals, and the performance of signal after 480 km and 640 km respectively standard single-mode fiber(SSMF).更多还原