全相位单通道混合LDPC码识别安全跟踪算法  

LDPC code recognition security tracking algorithm based on whole phase single channel admixture

作　　者：刘恩强[1] 刘增良[2] 孙振[1] 

机构地区：[1]北京科技大学自动化学院,北京100083 [2]国防大学信息指挥与作战教研部,北京100091

出　　处：《现代电子技术》2015年第8期31-34,共4页Modern Electronics Technique

摘　　要：LDPC码识别和安全跟踪是自适应调制编码技术研究的核心。在此提出一种基于全相位单通道混合的LDPC码识别安全跟踪算法,构建LDPC码识别模型,设计全相位单通道混合编码技术。采用相空间重构技术对LDPC码进行多维空间向量重组,通过信宿译码降低加密信息的带宽占用率,同时减小了对编码向量分配的限制,通过全相位单通道混合补偿,降低码间干扰,提高LDPC码识别能力。仿真实验表明,该算法具有较好的LDPC码输出空间增益响应,提高了LDPC码的识别安全跟踪性能,输出误差较小,误码率较低,在自适应调制编码通信等领域具有较高的应用价值。LDPC code recognition and security tracking are the cores of adaptive modulation and coding technology. A LDPC code recognition security tracking algorithm based on whole phase single channel admixture is proposed,LDPC code recognition model is constructed,and allphase single channel mixed coding technology is proposed in this paper. The phase space reconstruction technique is used for multidimensional space vector recombinant of LDPC code. While the bandwidth occupancy rate of encryption information is reduced by the sink decoding,the coding vector distribution restriction is reduced. With the allphase of single channel mixed compensation,inter symbol interference is reduced and the LDPC code recognition ability is improved. Simulation results show that the algorithm has better spatial gain response of LDPC code output,little output error and low error rate. Therefore,the recognition security tracking performance of LDPC code is improved. It has a higher application value in the fields of adaptive modulation and coding communication.

关 键 词：LDPC码 码识别 安全跟踪 数据通信 

分 类 号：TN929.534[电子电信—通信与信息系统]