基于叠加训练序列光OFDM系统帧同步算法FPGA实现

摘要

The introduction of OFDM technology in optical fiber communication system leads to synchronization and high peak-to-average power ratio (PAPR) in O-OFDM system. The paper studies frame synchronization algorithm in IM/DDO-OFDM system using superimposed training sequence technology, and designs the realization structure of the algorithm on FPGA. The combination of Matlab and ModelSim simulation verifys the effectiveness of the algorithm. The experimental results show that the stacking training sequence has less influence on data. Compared with traditional methods, the algorithm has the advantages of higher synchronization accuracy and easy implementation, and has valuable engineering application prospects.%光纤通信系统中引进OFDM技术给O-OFDM系统带来对同步、高峰均比等敏感问题.叠加训练序列技术对IM/DDO-OFDM系统帧同步算法研究,设计了FPGA的算法实现结构,联合Matlab,Modelsim等仿真工具验证算法开发的有效性.实验结果表明,叠加的训练序列对数据影响较小,与传统方法相比,具有更高的同步正确率,易于实现,有较强的工程应用前景.