ID 原文 译文
1763 再次，修改状态迁移规则，得到可描述攻防行为的拟态防御自动机模型; Third, one can get a model of MD automaton which can describe the attacks and MD actions, by modifying the state transition rules.
1764 最后，根据该自动机模型的状态条件，分析动态异构冗余结构上拟态攻防行为的安全性。 Finally, one can analyse the attacksand MD actions on a DHR structure, according to the conditions of the PA states.
1765 此外，也可使用交替自动机为拟态攻防建模，并把安全性自动分析规约为交替自动机模型检测问题。 Furthermore, we use an Alternating Finite Automaton (AFA)to model some attacks and MD actions. As a result, the automatic MD analysis problem is reduced to the solved AFA model checking problem.
1766 现有的高斯消元法在 Turbo 码帧结构识别中，存在着容错性差且计算量大的缺点，直接导致后续分量编码器以及交织器识别算法无法应用。 The Gauss elimination method to recognize Turbo code frame structure has the shortcomings of poor fault tolerance and high complex computation, which directly leads to the inapplicability of subsequent algorithms to recognize the component coder and inter leaver.
1767 为此，提出了一种基于矩阵模型列相关性的识别方法。 For this reason, a novel method based on correlation between columns of the matrix is pro-posed.
1768 首先在待定帧长下构建分析矩阵，并对其前后相邻两列进行差分处理， Firstly, analysis matrix is constructed under the undetermined frame length, with the neighboring columns being differ-entiated.
1769 然后建立关于差分后矩阵列重的统计量，根据码长及其整数倍处必有统计值能通过判决这一特点确定帧长。 Then statistics about column weight is established, and frame length is confirmed by the statistical values, which canpass the decision threshold when the column is frame length and its multiple.
1770 最后，通过分析正确码长下通过判决的统计值对应的相对位置关系，归纳帧起点的同步方法。 Finally, frame staring point is synchronized ac-cording to the relative position of statistical values which pass the threshold.
1771 仿真结果表明，本文算法在误码率高达 0.1 条件下，Turbo 帧结构参数识别能够达到 100% 的识别率， The simulation results show that the correct rec-ognition rate of parameters of Turbo frame structure can reach 100% , when the bit error rate is as high as 0. 1.
1772 与现有方法相比，本文算法计算复杂度更低且识别性能更好，可应用于认知无线电等非协作通信领域。 Compared with the existing methods, the proposed algorithm has lower computational complexity and better recognition performance, and is very suitable for non-cooperative communication fields such as cognitive radio.