中文摘要：

采用当前方法难以去除码间冗余干扰,激光通信信道存在拥塞问题,为此针对自由空间激光通信特点,提出基于经验模态分解的自由空间激光通信数据传输方法。首先建立自由空间激光通信信道特征分布模型,得到特征分解下激光通信数据传输迭代输出,组建自由空间激光通信信号接收模型,计算出激光通信信道冲击响应,利用自适应级联匹配滤波理论对激光通信数据进行抗干扰处理,提取通信数据功率谱密度特征,实现激光通信数据的经验模态分解和通信数据特征聚类。结果表明,该方法能够有效提升自由空间激光通信信道均衡性能,改善激光通信传输质量。

英文摘要：

It is difficult to remove inter-symbol redundant interference when data transmission is carried out by the current method. And there is congestion problem in the laser communication channel. In this paper,a free space laser communication data transmission method based on empirical mode decomposition is proposed for the characteristics of free space laser communication. Firstly,iterative output of laser communication data transmission under feature decomposition is obtained. And the free space laser communication signal receiving model is established to calculate the impact response of laser communication channel. The communication data is characterized by the feature data fusion processing. The adaptive data of the laser communication data is carried out by using the adaptive cascade matching filter theory,which realizes the empirical mode decomposition of laser data and the clustering of communication data features. The experimental results show that the proposed method can effectively improve the performance of free space laser communication channel and improve the quality of laser communication transmission.